Gertjan Ettema

About

Background and activities

Phd (1990) i human movement science, VU Univeristy Amsterdam.

Teaching: Biomechanics og human movement and motor control

Research: Biomechanics and work physiology in motor behaviour and sports performance

Working at Centre for Elite Sports Research

Publications

2023

Haugnes, Pål ; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana. (2023) Doctoral theses at NTNU (2023:235) "Sprinting for the win in cross-country skiing: Pacing strategy, race tactics, and the finish sprint". NTNU Grafisk senter
Doctoral dissertation
Ettema, Gertjan; Skovereng, Knut; Ritman, Tobias Elvevold; Danielsen, Jørgen. (2023) The role of external power demand on the choice of technique in classic cross-country skiing. PLOS ONE
Academic article
Haugnes, Pål ; Kocbach, Jan Martin; Noordhof, Dionne Adriana; Kjøsen Talsnes, Rune; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The influence of tactical positioning on performance in sprint cross-country skiing. PLOS ONE
Academic article

2022

Haugnes, Pål ; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Swedish Winter Sports Research Centre at Mid Sweden University
Academic anthology/Conference proceedings
Haugnes, Pål ; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) The influence of race tactics for performance in the heats of an international sprint cross-country skiing competition. PLOS ONE
Academic article
Elfmark, Ola; Ettema, Gertjan; Jølstad, Petter Andre; Gilgien, Matthias. (2022) Kinematic Determination of the Aerial Phase in Ski Jumping. Sensors
Academic article
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias. (2022) Assessment of the steady glide phase in ski jumping. Journal of Biomechanics
Academic article
Ettema, Gertjan; Haug, Aurora Aasrud; Ludvigsen, Tonje Pedersen; Danielsen, Jørgen. (2022) The role of stroke rate and intensity on rowing technique. Sports Biomechanics
Academic article

2021

Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gertjan. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Short communication
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gerardus Johannes C. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Hansen, Linda Marie; Sandbakk, Øyvind; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Upper- vs. Lower-Body Exercise Performance in Female and Male Cross-Country Skiers. Frontiers in Sports and Active Living
Academic article
Baumgart, Julia Kathrin; Ettema, Gertjan; Griggs, Katy E.; Goosey-Tolfrey, Victoria Louise; Leicht, Christof Andreas. (2021) A Reappraisal of Ventilatory Thresholds in Wheelchair Athletes With a Spinal Cord Injury: Do They Really Exist?. Frontiers in Physiology
Academic article
Noordhof, Dionne; Danielsson, Marius Lyng; Skovereng, Knut; Danielsen, Jørgen; Seeberg, Trine Margrethe; Haugnes, Pål . (2021) The dynamics of the anaerobic energy contribution during a simulated mass-start competition while roller-ski skating on a treadmill. Frontiers in Sports and Active Living
Academic article
Elfmark, Ola; Ettema, Gertjan; Groos, Daniel; Ihlen, Espen Alexander F.; Velta, Rune; Haugen, Per. (2021) Performance analysis in ski jumping with a differential global navigation satellite system and video-based pose estimation. Sensors
Academic article
Elfmark, Ola; Ettema, Gertjan. (2021) Aerodynamic investigation of the inrun position in Ski jumping. Sports Biomechanics
Academic article
Severin, Cecilia; Danielsen, Jørgen; Erichsen, Jorgen Falck; Eikevåg, Sindre Wold; Steinert, Martin; Ettema, Gertjan. (2021) Case Report: Adjusting Seat and Backrest Angle Improves Performance in an Elite Paralympic Rower. Frontiers in Sports and Active Living
Academic article
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David Caley Ruud; Ettema, Gertjan. (2021) Mechanical energy and propulsion mechanics in roller-skiing double-poling at increasing speeds. PLOS ONE
Academic article

2020

Luchsinger, Harri Simon; Kocbach, Jan; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2020) Contribution from cross-country skiing, start time and shooting components to the overall and isolated biathlon pursuit race performance. PLOS ONE
Academic article
Dalen, Terje; Aune, Tore Kristian; Hjelde, Geir Håvard; Ettema, Gertjan; Sandbakk, Øyvind; McGhie, David. (2020) Player load in male elite soccer: Comparisons of patterns between matches and positions. PLOS ONE
Academic article
Kolsung, Erik Borg; Ettema, Gertjan; Skovereng, Knut. (2020) Physiological Response to Cycling With Variable Versus Constant Power Output. Frontiers in Physiology
Academic article
Ettema, Gertjan; Braaten, Steinar; Danielsen, Jørgen; Fjeld, Birk Eirik. (2020) Imitation jumps in ski jumping: Technical execution and relationship to performance level. Journal of Sports Sciences
Academic article
Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2020) On the effect of changing handgrip position on joint specific power and cycling kinematics in recreational and professional cyclists. PLOS ONE
Academic article
Løkkeborg, Johannes Alnes; Ettema, Gerardus Johannes C. (2020) The role of incline, speed and work rate on the choice of technique in classical roller skiing. PLOS ONE
Academic article
McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2020) Strength Determinants of Jump Height in the Jump Throw Movement in Women Handball Players. Journal of Strength and Conditioning Research
Academic article

2019

Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2019) Joint specific power production in cycling: The effect of cadence and intensity. PLOS ONE
Academic article
Haugen, Thomas André; McGhie, David; Ettema, Gertjan. (2019) Sprint running: from fundamental mechanics to practice -a review. European Journal of Applied Physiology
Academic literature review
McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2019) Is There a Trade-Off Between Maximum Jumping and Throwing Capability in the Handball Jump Throw?. Sage Open
Academic article
Sandbakk, Øyvind; Ettema, Gertjan; Torvik, Per Øyvind; McGawley, Kerry. (2019) Nordic Winter Sports Conference. Nordic Winter Sports Conference
Other presentation
Ettema, Gertjan; McGhie, David. (2019) Biomekanikk og bevegelse. Universitetsforlaget
Chapter
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2019) Mechanical energetics and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. PLOS ONE
Academic article
Haugnes, Pål ; Kocbach, Jan; Luchsinger, Harri; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Interval-Based Physiological and Mechanical Demands of Cross-Country Ski Training. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Almquist, Nicki Winfield; Ettema, Gertjan; Hopker, James; Sandbakk, Øyvind; Rønnestad, Bent. (2019) The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Rasdal, Vegard Finserås; Ettema, Gertjan; Sandbakk, Øyvind. (2019) Concurrent optimization of two extremes: performance, physiological, and training characteristics of world class Nordic combined athletes. NTNU
Doctoral dissertation
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Contribution From Cross-Country Skiing and Shooting Variables on Performance Level and Sex Differences in Biathlon World Cup Individual Races. International Journal of Sports Physiology and Performance (IJSPP)
Academic article

2018

Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of the Effects of Performance Level and Sex on Sprint Performance in the Biathlon World Cup . International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2018) The effect of exhaustive exercise on the choice of technique and physiological response in classical roller skiing. European Journal of Applied Physiology
Academic article
Haugen, Thomas André; Danielsen, Jørgen; Alnes, Leif Olav; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2018) On the importance of “front-side mechanics” in athletics sprinting. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Baumgart, Julia Kathrin; Moes, Maaike; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Examination of gas exchange and blood lactate thresholds in Paralympic athletes during upper-body poling. PLOS ONE
Academic article
Baumgart, Julia Kathrin; Gurtler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of peak oxygen uptake and exercise efficiency between upper-body poling and arm crank ergometry in trained paraplegic and able-bodied participants. European Journal of Applied Physiology
Academic article
Haugnes, Pål; Torvik, Per Øyvind; Ettema, Gertjan; Kocbach, Jan; Sandbakk, Øyvind. (2018) The Effect of Maximal Speed Ability, Pacing Strategy and Technique on the Finish-Sprint of a Sprint Cross-Country Skiing Competition. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Bolger, Conor; Bessone, Veronica; Federolf, Peter Andreas; Ettema, Gertjan; Sandbakk, Øyvind. (2018) The influence of increased distal loading on metabolic cost, efficiency, and kinematics of roller ski skating. PLOS ONE
Academic article
Danielsen, Jørgen; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Energetics and dynamics of double poling cross-country skiing. NTNU Open
Doctoral dissertation

2017

Haugen, Thomas; Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) Kinematic stride cycle asymmetry is not associated with sprint performance and injury prevalence in athletic sprinters. Scandinavian Journal of Medicine & Science in Sports
Academic article
Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) The effect of exercise intensity on joint power and dynamics in ergometer double-poling performed by cross-country skiers. Human Movement Science
Academic literature review
Vandbakk, Kristine; Welde, Boye; Kruken , Andrea Hovstein; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine. (2017) Effects of upper-body sprint-interval training on strength and endurance capacities in female cross-country skiers. PLOS ONE
Academic article
Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The role of speed and incline in the spontaneous choice of technique in classical roller-skiing. Human Movement Science
Academic article
Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Association between laboratory capacities and world-cup performance in Nordic combined. PLOS ONE
Academic article
Skovereng, Knut; Ettema, Gertjan; Van Beekvelt, Mireille. (2017) The effect of cadence on shank muscle oxygen consumption and deoxygenation in relation to joint specific power and cycling kinematics. PLOS ONE
Academic article
Dahl, Christine; Sandbakk, Øyvind; Danielsen, Jørgen; Ettema, Gertjan. (2017) The role of power fluctuations in the preference of diagonal vs. double poling sub-technique at different incline-speed combinations in elite cross-country skiers. Frontiers in Physiology
Academic article
Haugnes, Pål ; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition? Book of Abstracts: "Performance in snow sports: Translating science into practice". Swedish winter sports research centre, Mid Sweden University
Report

2016

Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. Book of abstracts: 7th International congress on science and skiing. (1)
Academic anthology/Conference proceedings
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gertjan; Federolf, Peter Andreas. (2016) How hinge positioning in cross-country ski bindings affect exercise efficiency, cycle characteristics and muscle coordination during submaximal roller skiing. PLOS ONE
Academic article
Sandbakk, Øyvind; Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C. (2016) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gertjan. (2016) Mechanical energy and work in treadmill double poling on roller skis.
Academic chapter/article/Conference paper
Aune, Tore Kristian; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2016) Bilateral asymmetry in upper extremities is More pronounced in distal compared to proximal joints. Journal of Motor Behavior
Academic article
Dalen, Terje; Ingebrigtsen, Jørgen; Ettema, Gerardus Johannes C; Hjelde, Geir Håvard; Wisløff, Ulrik. (2016) Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer. Journal of Strength and Conditioning Research
Academic article
Østerås, Sindre; Welde, Boye; Danielsen, Jørgen; van den Tillaar, Roland; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Contribution of upper-body strength, body composition, and maximal oxygen uptake to predict double poling power and overall performance in female cross-country skiers. Journal of Strength and Conditioning Research
Academic article
Ettema, Gerardus Johannes C; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. PLOS ONE
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Van Beekvelt, Mireille. (2016) Local muscle oxygen consumption related to external and joint specific power. Human Movement Science
Academic article
Ettema, Gerardus Johannes C; Hooiveld, Jo; Braaten, Steinar; Boobert, Maarten. (2016) How do elite ski jumpers handle the dynamic conditions in imitation jumps?. Journal of Sports Sciences
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Van Beekvelt, Mireille. (2016) Oxygenation, local muscle oxygen consumption and joint specific power in cycling: the effect of cadence at a constant external work rate. European Journal of Applied Physiology
Academic article
Luchsinger, Harri; Sandbakk, Øyvind; Schubert, Michael; Ettema, Gerardus Johannes C; Baumeister, Jochen. (2016) A Comparison of Frontal Theta Activity During Shooting among Biathletes and Cross-Country Skiers before and after Vigorous Exercise. PLOS ONE
Academic article

2015

Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Faude, Oliver; Holmberg, Hans-Christer; Sandbakk, Øyvind. (2015) Gender differences in power production, energetic capacity and efficiency of elite cross-country skiers during whole-body, upper-body, and arm poling. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Skålvik, Tommy Fredriksen; Spencer, Matthew; Van Beekvelt, Mireille; Welde, Boye; Hegge, Ann Magdalen. (2015) The physiological responses to repeated upper-body sprint exercise in highly trained athletes. European Journal of Applied Physiology
Academic article
Bucher, Elias; Danielsen, Jørgen; Hegge, Ann Magdalen; Faude, Oliver; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) Technique differences between male and female cross-country skiers while whole body, upper body and arm poling on a ski ergometer.
Academic chapter/article/Conference paper
Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2015) Mechanical Energy and Propulsion in Ergometer Double Poling by Cross-country Skiers. Medicine & Science in Sports & Exercise
Academic article

2014

Sandbakk, Øyvind; Hansen, Mads; Ettema, Gerardus Johannes C; Rønnestad, Bent. (2014) The effects of heavy upper-body strength training on ice sledge hockey sprint abilities in world class players. Human Movement Science
Academic article
Grasaas, Erik; Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) The effects of poling on physiological, kinematic and kinetic responses in roller ski skating. European Journal of Applied Physiology
Academic article
Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; de Koning, Jos; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Human Movement Science
Academic article
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiological and biomechanical differences between double poling and G3 skating in world class cross-country skiers. European Journal of Applied Physiology
Academic article
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in female and male cross-country skiers.
Academic chapter/article/Conference paper
Skovereng, Knut; Van Beekvelt, Mireille; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise.
Academic chapter/article/Conference paper
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Federolf, Peter Andreas. (2014) Does the Position of the Hinge in Cross-country Ski Bindings Affect Muscle Activation in Skating?. SciTePress
Other
Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what.
Academic chapter/article/Conference paper
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports.
Academic chapter/article/Conference paper
McGhie, David; Ettema, Gertja. (2014) On the "trench effect" theory: A biomechanical analysis of the relationship between traction and shoe orientation on third-generation artificial turf. Footwear Science
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2014) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Scandinavian Journal of Medicine & Science in Sports
Academic article
Grasaas, Christina Åsan; Ettema, Gertja; Hegge, Ann Magdalen H. S.; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in Technique and Efficiency After High-Intensity Exercise in Cross-Country Skiers. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Hoset, Martin; Rognstad, Asgeir Bakken; Rølvåg, Terje; Ettema, Gertja; Sandbakk, Øyvind. (2014) Construction of an instrumented roller ski and validation of three-dimensional forces in the skating technique. Sports Engineering
Academic article
Andersson, E.; Stöggl, T; Pellegrini, B.; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2014) Biomechanical analysis of the herringbone technique as employed by elite cross-country skiers. Scandinavian Journal of Medicine & Science in Sports
Academic article
Sandbakk, Øyvind; Spencer, Matthew; Ettema, Gerardus Johannes C; Bucher, Silvana Andrea; Skovereng, Knut; Welde, Boye. (2014) The Physiology and Biomechanics of Upper-Body Repeated Sprints in Ice Sledge Hockey. International Journal of Sports Physiology and Performance (IJSPP)
Academic article

2013

Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body.
Academic chapter/article/Conference paper
Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey.
Academic chapter/article/Conference paper
van den Tillaar, Roland ; Ettema, Gertja. (2013) A Comparison of Muscle Activity in Concentric and Counter Movement Maximum Bench Press. The Journal of Human Kinetics
Academic article
Supej, Matej; Sætran, Lars Roar; Oggiano, Luca; Ettema, Gerardus Johannes C; Sarabon, N; Nemec, B. (2013) Aerodynamic drag is not the major determinant of performance during giant slalom skiing at the elite level. Scandinavian Journal of Medicine & Science in Sports
Academic article
Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Ettema, Gerardus Johannes C; Welde, Boye. (2013) Effects of Intensity and Duration in Aerobic High-Intensity Interval Training in Highly Trained Junior Cross-Country Skiers. Journal of Strength and Conditioning Research
Academic article
Bardal, Ellen Marie; Olsen, Trond Vegar; Ettema, Gerardus Johannes C; Mork, Paul Jarle. (2013) Metabolic rate, cardiac response, and aerobic capacity in fibromyalgia: A case-control study. Scandinavian Journal of Rheumatology
Academic article
Mcghie, David Caley Ruud; Ettema, Gerardus Johannes C. (2013) Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf. Sports Engineering
Academic article
Sandbakk, Øyvind; Hegge, Ann Magdalen H. S.; Ettema, Gertjan. (2013) The role of incline, performance level and gender on the gross mechanical efficiency of roller ski skating. Frontiers in Physiology
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2013) On the relationship between upper-body strength, power and sprint performance in ice sledge hockey. Journal of Strength and Conditioning Research
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2013) The physiological and biomechanical contributions of poling to roller ski skating. European Journal of Applied Physiology
Academic article
Leirdal, Stig; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2013) Effects of frequency on gross efficiency and performance in roller ski skating. Scandinavian Journal of Medicine & Science in Sports
Academic article
Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2013) Comparison of bilateral force deficit in proximal and distal joints in upper extremities. Human Movement Science
Academic article

2012

Supej, Matej; Oggiano, Luca; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Differences in air drag among elite male alpine skiers. Meyer & Meyer Sport
Academic chapter/article/Conference paper
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical Analysis of Surface-Athlete Impacts on Third-Generation Artificial Turf. American Journal of Sports Medicine
Academic article
van den Tillaar, Roland ; Sæterbakken, Atle; Ettema, Gerardus Johannes C. (2012) Is the occurrence of the sticking region the result of diminishing potentiation in bench press?. Journal of Sports Sciences
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) Efficiency in cross-country skiing. A brief review. Meyer & Meyer Sport
Academic chapter/article/Conference paper
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2012) Gender differences in the physiological responses and kinematic behaviour of elite sprint cross-country skiers. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, HC. (2012) The contribution from poling increases gender differences in elite cross-country skiers.
Academic chapter/article/Conference paper
Leirdal, Stig; Ettema, Gerardus Johannes C. (2012) Cycling. Springer
Encyclopedia article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The influence of incline and speed on work rate, gross efficiency and kinematics of roller ski skating. European Journal of Applied Physiology
Academic article
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. Procedia Engineering
Academic article

2011

van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2011) A comparison of kinematics between overarm throwing with 20% underweight, regular, and 20% overweight balls. Journal of Applied Biomechanics
Academic article
Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Effects of age, task, and frequency on variability of finger tapping. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling Technique and Energy Cost in Cycling. Medicine & Science in Sports & Exercise
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Jakobsen, Vidar Eivind; Holmberg, Hans-Christer. (2011) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Løkke, Trine Beate; Holmberg, Hans-Christer. (2011) The impact of pole propulsion on kinematics and fatigue in roller ski skating.
Other
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. Medicine & Science in Sports & Exercise
Abstract
Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig. (2011) Maximal aerobic capacity and efficiency in world class sprint skiers using the double poling and G3 skating technique.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling technique and energy cost in cycling.
Other
Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The physiology of world-class sprint skiers. Scandinavian Journal of Medicine & Science in Sports
Academic article
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The relationship between cadence, pedaling technique and gross efficiency in cycling. European Journal of Applied Physiology
Academic article
McGhie, David; Ettema, Gerardus Johannes C. (2011) The effect of cadence on timing of muscle activation and mechanical output in cycling: On the activation dynamics hypothesis. Journal of Electromyography & Kinesiology
Academic article

2010

Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Metabolic rate and gross efficiency at high work rates in world class and national level sprint skiers. European Journal of Applied Physiology
Academic article
van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2010) The "sticking period" in a maximum bench press. Journal of Sports Sciences
Academic article
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Effect of frequency in roller ski skating.
Other
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2010) Physiological gender differences associated with sprint skiing performance.
Other
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2010) The effect of gender and training experience on body segments' contributions in overarm throwing. International Journal of Sport Psychology
Abstract

2009

Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) On the relationship between gross efficiency and force effectiveness during ergometer cycling.
Other
Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC. (2009) Efficiency at high work rates in world class skiers.
Other
Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) The physiology of world class sprint skiers.
Other
van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2009) Acomparison of successful and unsuccessful attempts in 1RM bench press.
Other
Ettema, Gerardus Johannes C; McGhie, David; Olsen, Kristian Killi; Lillemark, Kristian. (2009) The effect of body orientation om cycling technique.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen cadence and gross efficiently during ergometer and free bicycling.
Other
Leirdal, Stig; Sandbakk, Øyvind; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) Sub-maximal efficiency during roller ski skating.
Other
Ettema, Gerardus Johannes C. (2009) Inertial loading in level and uphill cycling.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen pedal rate during free cycling on a roller and ergometer cycling. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) A comparison of overarm throwing with the dominant and nondominant arm in experienced team handball players. Perceptual and Motor Skills
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) Is there a proximal-to-distal sequence in overarm throwing in team handball?. Journal of Sports Sciences
Academic article
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal; Leirdal, Stig. (2009) The effects of cycling cadence on the phases of joint power, crank power, force and force effectiveness. Journal of Electromyography & Kinesiology
Academic article
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal. (2009) Efficiency in cycling: a review. European Journal of Applied Physiology
Academic literature review
Lorås, Håvard Wuttudal; Ettema, Gerardus Johannes C; Leirdal, Stig. (2009) The Muscle Force Component in Pedaling Retains Constant Direction Across Pedaling Rates. Journal of Applied Biomechanics
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) A Comparison of Successful and Unsuccessful Attempts in Maximal Bench Pressing. Medicine & Science in Sports & Exercise
Academic article

2008

Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists. Springer Publishing Company
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C; Gløsen, Tommy; Tillaar, Roland van den. (2008) Effect of specific strength training on overarm throwing performance. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Aune, Tore Kristian; Ingvaldsen, Rolf Petter; Ettema, Gerardus Johannes C. (2008) Effect of physical fatigue on motor control at different skill levels. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2008) Coordination Specificity in Strength and Power Training. International Journal of Sports Medicine (IJSM)
Academic article

2007

Ettema, Gerardus Johannes C; Bråten, Steinar. (2007) On the role of the location of centre of mass in ski jumping.
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C; Hooiveld, Jo; Bråten, Steinar; Bobbert, Maarten F. (2007) The possible use of horizontal propulsion in imitation ski jumps.
Academic chapter/article/Conference paper
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2007) The effect of rate of force development on maximal force production: acute and training-related aspects. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2007) A three-dimensional analysis of overarm throwing in experienced handball players. Journal of Applied Biomechanics
Academic article

2006

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) Effects of gender and training experience on kinematical and temporal aspects of overarm throwing technique. Norges Teknisk-Naturvitenskapelige Universitet, Program for Bevegelsesvitenskap
Masters thesis
Ettema, Gerardus Johannes C; Bråten, Steinar. (2006) On the role of the location of centre of mass in ski jumping.
Academic chapter/article/Conference paper
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players.
Academic chapter/article/Conference paper
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males when performing an overarm throwing task.
Academic chapter/article/Conference paper
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing.
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum.
Academic chapter/article/Conference paper
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) A comparison of kinematics between novices and experts in overarm throwing under influence of type of instruction. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Sætran, Lars Roar; Roeleveld, Karin; Vereijken, Beatrix; Bråten, Steinar; Bråten, Steinar. (2006) Effects of Body Position on Slide Boarding Performance by Cross-Country Skiers. Medicine & Science in Sports & Exercise
Academic article
Kristensen, Geir Olav; Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) Velocity Specificity in Early-Phase Sprint Training. Journal of Strength and Conditioning Research
Academic article

2005

Ettema, Gerardus Johannes C; Braten, S; Bobbert, MF. (2005) Dynamics of the in-run in ski jumping: A simulation study. Journal of Applied Biomechanics
Academic article
Ettema, Gerardus Johannes C; Taylor, E; North, JD; Kippers, V. (2005) Muscle synergies at the elbow in static and oscillating isometric torque tasks with dual degrees of freedom. Motor Control
Academic article
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2005) Changes in agonist EMG activation level during MVC cannot explain early strength improvement. European Journal of Applied Physiology
Academic article

2004

van den Tillaar, R; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2004) A force velocity relationship and coordination patterns in overarm throwing. Journal of Sports Science and Medicine
Academic article

2003

Leirdal, Stig; Ettema, Gerardus Johannes C. (2003) Utholdenhet: Energifrigjøring, prestasjonsfaktorer, trening, tilpasninger og testing. Pensum Topptrenerstudiet Olympiatoppen-NTNU. [Mangler utgivernavn]
Compendium
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2003) Effects of instruction, emphasizing on velocity, accuracy or both on the performance and kinematics in overarm throwing. Perceptual and Motor Skills
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing. Perceptual and Motor Skills
Academic article
van den Tillaar, R; Ettema, Gerardus Johannes C. (2003) Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players. Perceptual and Motor Skills
Academic article

2002

Toussaint, Gerthory; Pedersen, Atle; Oterhals, Geir; Fiskvik, Anne Margrete; Ettema, Gerardus Johannes C; Bongaardt, Robert. (2002) La det swinge! Om kropp og bevegelse. Tapir Akademisk Forlag
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C. (2002) Effects of contraction history on control and stability in explosive actions. Journal of Electromyography & Kinesiology
Academic article

2001

Ettema, Gerardus Johannes C. (2001) Muscle efficiency: the controversial role of elasticity and mechanical energy conversion in stretch-shortening cycles. European Journal of Applied Physiology
Academic article

2000

Ettema, Gerardus Johannes C. (2000) Motor behaviour: notes on neuro-physiology. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) Biomechanics: classic mechanics applied to the musculoskeletal system in a functional setting. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) Physiological and biomechanical constraints: muscle mechanics & motor action. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) WinLab - a signal analysis package for MatLab.
Software
Ettema, Gerardus Johannes C. (2000) Stability - ver.04 Muscle-joint model for simulation of coordinated movement.
Software
Ettema, Gerardus Johannes C; Meijer, Kenneth. (2000) Muscle contraction history: modified Hill versus an exponential decay model. Biological cybernetics
Academic article

1999

Ettema, Gerardus Johannes C; Roeleveld, Karin; Tillaar, Roland van den. (1999) Biologi i Grunnfag Idrett (IDR105) på internet. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (1999) SIM-MH ver.04 Simulation package on muscle contraction mechanisms.
Software
Ettema, Gerardus Johannes C. (1999) Human movement from a biological perspective:differentiation of subsystems and biological organisation. Corpus, Psyche et Societas
Academic article
Ettema, Gerardus Johannes C. (1999) Modelling skeletal muscle-tendon units as actuators in motor behaviour: morphological aspects. Corpus, Psyche et Societas
Academic article

1998

Ettema, Gerardus Johannes C. (1998) MuscSim - A muscle contraction and movement simulation package for students, in Matlab.
Software
Walshe, Andrew; Wilson, Greg J; Ettema, Gerardus Johannes C. (1998) Stretch shorten cycle as compared to isometric preload: contributions to enhanced muscular performance. Journal of applied physiology
Academic article
Ettema, Gerardus Johannes C; Forwood, Mark R; Goh, Judith TW. (1998) A new method to measure elastic properties of plastic-viscoelastic connective tissue. Medical Engineering and Physics
Academic article
Ettema, Gerardus Johannes C; Styles, George; Kippers, Vaughan. (1998) The moment arms of 23 muscles of the upper limb in different elbow and forearm positions. Human Movement Science
Academic article

1997

Ettema, Gerardus Johannes C. (1997) The Human Musculoskeletal System. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Academic article
Ettema, Gerardus Johannes C. (1997) Gastrocnemius muscle length in relation to knee and ankle joint angles: verification of a geometric model and some applications. Anatomical Record
Academic article
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Academic article
Ettema, Gerardus Johannes C. (1997) Muscle length and force generation in bipedal and quadrupedal animals in relation to joint ankles and locomotor behaviour. Anatomical Record
Academic article

1996

Ettema, Gerardus Johannes C; Kippers, Vaughan. (1996) Proceedings of the 1996 Conference of the anatomical society of Australia and New Zealand. [Mangler utgivernavn]
Report
Ettema, Gerardus Johannes C. (1996) Innovations in teaching musculoskeletal anatomy. [Mangler utgivernavn]
Report
Ettema, Gerardus Johannes C. (1996) Contractile behaviour in rat gastrocnemius muscle during small amplitude sine wave perturbations. Journal of Biomechanics
Academic article
Ettema, Gerardus Johannes C. (1996) Elastic - and length-force characteristics of the gastrocnemius of the hopping mouse (notomys alexis) and the rat (rattus norvegicus). Journal of Experimental Biology
Academic article
Ettema, Gerardus Johannes C. (1996) Mechanical efficiency and efficiency of storage and release of series elastic energy in skeletal muscle during stretch-shorten cycles. Journal of Experimental Biology
Academic article

Journal publications

Ettema, Gertjan; Skovereng, Knut; Ritman, Tobias Elvevold; Danielsen, Jørgen. (2023) The role of external power demand on the choice of technique in classic cross-country skiing. PLOS ONE
Academic article
Haugnes, Pål ; Kocbach, Jan Martin; Noordhof, Dionne Adriana; Kjøsen Talsnes, Rune; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The influence of tactical positioning on performance in sprint cross-country skiing. PLOS ONE
Academic article
Haugnes, Pål ; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) The influence of race tactics for performance in the heats of an international sprint cross-country skiing competition. PLOS ONE
Academic article
Elfmark, Ola; Ettema, Gertjan; Jølstad, Petter Andre; Gilgien, Matthias. (2022) Kinematic Determination of the Aerial Phase in Ski Jumping. Sensors
Academic article
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias. (2022) Assessment of the steady glide phase in ski jumping. Journal of Biomechanics
Academic article
Ettema, Gertjan; Haug, Aurora Aasrud; Ludvigsen, Tonje Pedersen; Danielsen, Jørgen. (2022) The role of stroke rate and intensity on rowing technique. Sports Biomechanics
Academic article
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gertjan. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Short communication
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gerardus Johannes C. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Hansen, Linda Marie; Sandbakk, Øyvind; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Upper- vs. Lower-Body Exercise Performance in Female and Male Cross-Country Skiers. Frontiers in Sports and Active Living
Academic article
Baumgart, Julia Kathrin; Ettema, Gertjan; Griggs, Katy E.; Goosey-Tolfrey, Victoria Louise; Leicht, Christof Andreas. (2021) A Reappraisal of Ventilatory Thresholds in Wheelchair Athletes With a Spinal Cord Injury: Do They Really Exist?. Frontiers in Physiology
Academic article
Noordhof, Dionne; Danielsson, Marius Lyng; Skovereng, Knut; Danielsen, Jørgen; Seeberg, Trine Margrethe; Haugnes, Pål . (2021) The dynamics of the anaerobic energy contribution during a simulated mass-start competition while roller-ski skating on a treadmill. Frontiers in Sports and Active Living
Academic article
Elfmark, Ola; Ettema, Gertjan; Groos, Daniel; Ihlen, Espen Alexander F.; Velta, Rune; Haugen, Per. (2021) Performance analysis in ski jumping with a differential global navigation satellite system and video-based pose estimation. Sensors
Academic article
Elfmark, Ola; Ettema, Gertjan. (2021) Aerodynamic investigation of the inrun position in Ski jumping. Sports Biomechanics
Academic article
Severin, Cecilia; Danielsen, Jørgen; Erichsen, Jorgen Falck; Eikevåg, Sindre Wold; Steinert, Martin; Ettema, Gertjan. (2021) Case Report: Adjusting Seat and Backrest Angle Improves Performance in an Elite Paralympic Rower. Frontiers in Sports and Active Living
Academic article
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David Caley Ruud; Ettema, Gertjan. (2021) Mechanical energy and propulsion mechanics in roller-skiing double-poling at increasing speeds. PLOS ONE
Academic article
Luchsinger, Harri Simon; Kocbach, Jan; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2020) Contribution from cross-country skiing, start time and shooting components to the overall and isolated biathlon pursuit race performance. PLOS ONE
Academic article
Dalen, Terje; Aune, Tore Kristian; Hjelde, Geir Håvard; Ettema, Gertjan; Sandbakk, Øyvind; McGhie, David. (2020) Player load in male elite soccer: Comparisons of patterns between matches and positions. PLOS ONE
Academic article
Kolsung, Erik Borg; Ettema, Gertjan; Skovereng, Knut. (2020) Physiological Response to Cycling With Variable Versus Constant Power Output. Frontiers in Physiology
Academic article
Ettema, Gertjan; Braaten, Steinar; Danielsen, Jørgen; Fjeld, Birk Eirik. (2020) Imitation jumps in ski jumping: Technical execution and relationship to performance level. Journal of Sports Sciences
Academic article
Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2020) On the effect of changing handgrip position on joint specific power and cycling kinematics in recreational and professional cyclists. PLOS ONE
Academic article
Løkkeborg, Johannes Alnes; Ettema, Gerardus Johannes C. (2020) The role of incline, speed and work rate on the choice of technique in classical roller skiing. PLOS ONE
Academic article
McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2020) Strength Determinants of Jump Height in the Jump Throw Movement in Women Handball Players. Journal of Strength and Conditioning Research
Academic article
Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2019) Joint specific power production in cycling: The effect of cadence and intensity. PLOS ONE
Academic article
Haugen, Thomas André; McGhie, David; Ettema, Gertjan. (2019) Sprint running: from fundamental mechanics to practice -a review. European Journal of Applied Physiology
Academic literature review
McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2019) Is There a Trade-Off Between Maximum Jumping and Throwing Capability in the Handball Jump Throw?. Sage Open
Academic article
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2019) Mechanical energetics and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. PLOS ONE
Academic article
Haugnes, Pål ; Kocbach, Jan; Luchsinger, Harri; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Interval-Based Physiological and Mechanical Demands of Cross-Country Ski Training. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Almquist, Nicki Winfield; Ettema, Gertjan; Hopker, James; Sandbakk, Øyvind; Rønnestad, Bent. (2019) The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Contribution From Cross-Country Skiing and Shooting Variables on Performance Level and Sex Differences in Biathlon World Cup Individual Races. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of the Effects of Performance Level and Sex on Sprint Performance in the Biathlon World Cup . International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2018) The effect of exhaustive exercise on the choice of technique and physiological response in classical roller skiing. European Journal of Applied Physiology
Academic article
Haugen, Thomas André; Danielsen, Jørgen; Alnes, Leif Olav; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2018) On the importance of “front-side mechanics” in athletics sprinting. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Baumgart, Julia Kathrin; Moes, Maaike; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Examination of gas exchange and blood lactate thresholds in Paralympic athletes during upper-body poling. PLOS ONE
Academic article
Baumgart, Julia Kathrin; Gurtler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of peak oxygen uptake and exercise efficiency between upper-body poling and arm crank ergometry in trained paraplegic and able-bodied participants. European Journal of Applied Physiology
Academic article
Haugnes, Pål; Torvik, Per Øyvind; Ettema, Gertjan; Kocbach, Jan; Sandbakk, Øyvind. (2018) The Effect of Maximal Speed Ability, Pacing Strategy and Technique on the Finish-Sprint of a Sprint Cross-Country Skiing Competition. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Bolger, Conor; Bessone, Veronica; Federolf, Peter Andreas; Ettema, Gertjan; Sandbakk, Øyvind. (2018) The influence of increased distal loading on metabolic cost, efficiency, and kinematics of roller ski skating. PLOS ONE
Academic article
Haugen, Thomas; Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) Kinematic stride cycle asymmetry is not associated with sprint performance and injury prevalence in athletic sprinters. Scandinavian Journal of Medicine & Science in Sports
Academic article
Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) The effect of exercise intensity on joint power and dynamics in ergometer double-poling performed by cross-country skiers. Human Movement Science
Academic literature review
Vandbakk, Kristine; Welde, Boye; Kruken , Andrea Hovstein; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine. (2017) Effects of upper-body sprint-interval training on strength and endurance capacities in female cross-country skiers. PLOS ONE
Academic article
Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The role of speed and incline in the spontaneous choice of technique in classical roller-skiing. Human Movement Science
Academic article
Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Association between laboratory capacities and world-cup performance in Nordic combined. PLOS ONE
Academic article
Skovereng, Knut; Ettema, Gertjan; Van Beekvelt, Mireille. (2017) The effect of cadence on shank muscle oxygen consumption and deoxygenation in relation to joint specific power and cycling kinematics. PLOS ONE
Academic article
Dahl, Christine; Sandbakk, Øyvind; Danielsen, Jørgen; Ettema, Gertjan. (2017) The role of power fluctuations in the preference of diagonal vs. double poling sub-technique at different incline-speed combinations in elite cross-country skiers. Frontiers in Physiology
Academic article
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gertjan; Federolf, Peter Andreas. (2016) How hinge positioning in cross-country ski bindings affect exercise efficiency, cycle characteristics and muscle coordination during submaximal roller skiing. PLOS ONE
Academic article
Sandbakk, Øyvind; Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C. (2016) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Aune, Tore Kristian; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2016) Bilateral asymmetry in upper extremities is More pronounced in distal compared to proximal joints. Journal of Motor Behavior
Academic article
Dalen, Terje; Ingebrigtsen, Jørgen; Ettema, Gerardus Johannes C; Hjelde, Geir Håvard; Wisløff, Ulrik. (2016) Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer. Journal of Strength and Conditioning Research
Academic article
Østerås, Sindre; Welde, Boye; Danielsen, Jørgen; van den Tillaar, Roland; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Contribution of upper-body strength, body composition, and maximal oxygen uptake to predict double poling power and overall performance in female cross-country skiers. Journal of Strength and Conditioning Research
Academic article
Ettema, Gerardus Johannes C; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. PLOS ONE
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Van Beekvelt, Mireille. (2016) Local muscle oxygen consumption related to external and joint specific power. Human Movement Science
Academic article
Ettema, Gerardus Johannes C; Hooiveld, Jo; Braaten, Steinar; Boobert, Maarten. (2016) How do elite ski jumpers handle the dynamic conditions in imitation jumps?. Journal of Sports Sciences
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Van Beekvelt, Mireille. (2016) Oxygenation, local muscle oxygen consumption and joint specific power in cycling: the effect of cadence at a constant external work rate. European Journal of Applied Physiology
Academic article
Luchsinger, Harri; Sandbakk, Øyvind; Schubert, Michael; Ettema, Gerardus Johannes C; Baumeister, Jochen. (2016) A Comparison of Frontal Theta Activity During Shooting among Biathletes and Cross-Country Skiers before and after Vigorous Exercise. PLOS ONE
Academic article
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Faude, Oliver; Holmberg, Hans-Christer; Sandbakk, Øyvind. (2015) Gender differences in power production, energetic capacity and efficiency of elite cross-country skiers during whole-body, upper-body, and arm poling. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Skålvik, Tommy Fredriksen; Spencer, Matthew; Van Beekvelt, Mireille; Welde, Boye; Hegge, Ann Magdalen. (2015) The physiological responses to repeated upper-body sprint exercise in highly trained athletes. European Journal of Applied Physiology
Academic article
Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2015) Mechanical Energy and Propulsion in Ergometer Double Poling by Cross-country Skiers. Medicine & Science in Sports & Exercise
Academic article
Sandbakk, Øyvind; Hansen, Mads; Ettema, Gerardus Johannes C; Rønnestad, Bent. (2014) The effects of heavy upper-body strength training on ice sledge hockey sprint abilities in world class players. Human Movement Science
Academic article
Grasaas, Erik; Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) The effects of poling on physiological, kinematic and kinetic responses in roller ski skating. European Journal of Applied Physiology
Academic article
Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; de Koning, Jos; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Human Movement Science
Academic article
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiological and biomechanical differences between double poling and G3 skating in world class cross-country skiers. European Journal of Applied Physiology
Academic article
McGhie, David; Ettema, Gertja. (2014) On the "trench effect" theory: A biomechanical analysis of the relationship between traction and shoe orientation on third-generation artificial turf. Footwear Science
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2014) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Scandinavian Journal of Medicine & Science in Sports
Academic article
Grasaas, Christina Åsan; Ettema, Gertja; Hegge, Ann Magdalen H. S.; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in Technique and Efficiency After High-Intensity Exercise in Cross-Country Skiers. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Hoset, Martin; Rognstad, Asgeir Bakken; Rølvåg, Terje; Ettema, Gertja; Sandbakk, Øyvind. (2014) Construction of an instrumented roller ski and validation of three-dimensional forces in the skating technique. Sports Engineering
Academic article
Andersson, E.; Stöggl, T; Pellegrini, B.; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2014) Biomechanical analysis of the herringbone technique as employed by elite cross-country skiers. Scandinavian Journal of Medicine & Science in Sports
Academic article
Sandbakk, Øyvind; Spencer, Matthew; Ettema, Gerardus Johannes C; Bucher, Silvana Andrea; Skovereng, Knut; Welde, Boye. (2014) The Physiology and Biomechanics of Upper-Body Repeated Sprints in Ice Sledge Hockey. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
van den Tillaar, Roland ; Ettema, Gertja. (2013) A Comparison of Muscle Activity in Concentric and Counter Movement Maximum Bench Press. The Journal of Human Kinetics
Academic article
Supej, Matej; Sætran, Lars Roar; Oggiano, Luca; Ettema, Gerardus Johannes C; Sarabon, N; Nemec, B. (2013) Aerodynamic drag is not the major determinant of performance during giant slalom skiing at the elite level. Scandinavian Journal of Medicine & Science in Sports
Academic article
Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Ettema, Gerardus Johannes C; Welde, Boye. (2013) Effects of Intensity and Duration in Aerobic High-Intensity Interval Training in Highly Trained Junior Cross-Country Skiers. Journal of Strength and Conditioning Research
Academic article
Bardal, Ellen Marie; Olsen, Trond Vegar; Ettema, Gerardus Johannes C; Mork, Paul Jarle. (2013) Metabolic rate, cardiac response, and aerobic capacity in fibromyalgia: A case-control study. Scandinavian Journal of Rheumatology
Academic article
Mcghie, David Caley Ruud; Ettema, Gerardus Johannes C. (2013) Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf. Sports Engineering
Academic article
Sandbakk, Øyvind; Hegge, Ann Magdalen H. S.; Ettema, Gertjan. (2013) The role of incline, performance level and gender on the gross mechanical efficiency of roller ski skating. Frontiers in Physiology
Academic article
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2013) On the relationship between upper-body strength, power and sprint performance in ice sledge hockey. Journal of Strength and Conditioning Research
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2013) The physiological and biomechanical contributions of poling to roller ski skating. European Journal of Applied Physiology
Academic article
Leirdal, Stig; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2013) Effects of frequency on gross efficiency and performance in roller ski skating. Scandinavian Journal of Medicine & Science in Sports
Academic article
Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2013) Comparison of bilateral force deficit in proximal and distal joints in upper extremities. Human Movement Science
Academic article
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical Analysis of Surface-Athlete Impacts on Third-Generation Artificial Turf. American Journal of Sports Medicine
Academic article
van den Tillaar, Roland ; Sæterbakken, Atle; Ettema, Gerardus Johannes C. (2012) Is the occurrence of the sticking region the result of diminishing potentiation in bench press?. Journal of Sports Sciences
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2012) Gender differences in the physiological responses and kinematic behaviour of elite sprint cross-country skiers. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The influence of incline and speed on work rate, gross efficiency and kinematics of roller ski skating. European Journal of Applied Physiology
Academic article
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. Procedia Engineering
Academic article
van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2011) A comparison of kinematics between overarm throwing with 20% underweight, regular, and 20% overweight balls. Journal of Applied Biomechanics
Academic article
Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Effects of age, task, and frequency on variability of finger tapping. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling Technique and Energy Cost in Cycling. Medicine & Science in Sports & Exercise
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Jakobsen, Vidar Eivind; Holmberg, Hans-Christer. (2011) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. European Journal of Applied Physiology
Academic article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. Medicine & Science in Sports & Exercise
Abstract
Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The physiology of world-class sprint skiers. Scandinavian Journal of Medicine & Science in Sports
Academic article
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The relationship between cadence, pedaling technique and gross efficiency in cycling. European Journal of Applied Physiology
Academic article
McGhie, David; Ettema, Gerardus Johannes C. (2011) The effect of cadence on timing of muscle activation and mechanical output in cycling: On the activation dynamics hypothesis. Journal of Electromyography & Kinesiology
Academic article
Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Metabolic rate and gross efficiency at high work rates in world class and national level sprint skiers. European Journal of Applied Physiology
Academic article
van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2010) The "sticking period" in a maximum bench press. Journal of Sports Sciences
Academic article
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2010) The effect of gender and training experience on body segments' contributions in overarm throwing. International Journal of Sport Psychology
Abstract
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen pedal rate during free cycling on a roller and ergometer cycling. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) A comparison of overarm throwing with the dominant and nondominant arm in experienced team handball players. Perceptual and Motor Skills
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) Is there a proximal-to-distal sequence in overarm throwing in team handball?. Journal of Sports Sciences
Academic article
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal; Leirdal, Stig. (2009) The effects of cycling cadence on the phases of joint power, crank power, force and force effectiveness. Journal of Electromyography & Kinesiology
Academic article
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal. (2009) Efficiency in cycling: a review. European Journal of Applied Physiology
Academic literature review
Lorås, Håvard Wuttudal; Ettema, Gerardus Johannes C; Leirdal, Stig. (2009) The Muscle Force Component in Pedaling Retains Constant Direction Across Pedaling Rates. Journal of Applied Biomechanics
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2009) A Comparison of Successful and Unsuccessful Attempts in Maximal Bench Pressing. Medicine & Science in Sports & Exercise
Academic article
Ettema, Gerardus Johannes C; Gløsen, Tommy; Tillaar, Roland van den. (2008) Effect of specific strength training on overarm throwing performance. International Journal of Sports Physiology and Performance (IJSPP)
Academic article
Aune, Tore Kristian; Ingvaldsen, Rolf Petter; Ettema, Gerardus Johannes C. (2008) Effect of physical fatigue on motor control at different skill levels. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2008) Coordination Specificity in Strength and Power Training. International Journal of Sports Medicine (IJSM)
Academic article
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2007) The effect of rate of force development on maximal force production: acute and training-related aspects. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2007) A three-dimensional analysis of overarm throwing in experienced handball players. Journal of Applied Biomechanics
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) A comparison of kinematics between novices and experts in overarm throwing under influence of type of instruction. Perceptual and Motor Skills
Academic article
Leirdal, Stig; Sætran, Lars Roar; Roeleveld, Karin; Vereijken, Beatrix; Bråten, Steinar; Bråten, Steinar. (2006) Effects of Body Position on Slide Boarding Performance by Cross-Country Skiers. Medicine & Science in Sports & Exercise
Academic article
Kristensen, Geir Olav; Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) Velocity Specificity in Early-Phase Sprint Training. Journal of Strength and Conditioning Research
Academic article
Ettema, Gerardus Johannes C; Braten, S; Bobbert, MF. (2005) Dynamics of the in-run in ski jumping: A simulation study. Journal of Applied Biomechanics
Academic article
Ettema, Gerardus Johannes C; Taylor, E; North, JD; Kippers, V. (2005) Muscle synergies at the elbow in static and oscillating isometric torque tasks with dual degrees of freedom. Motor Control
Academic article
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2005) Changes in agonist EMG activation level during MVC cannot explain early strength improvement. European Journal of Applied Physiology
Academic article
van den Tillaar, R; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2004) A force velocity relationship and coordination patterns in overarm throwing. Journal of Sports Science and Medicine
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2003) Effects of instruction, emphasizing on velocity, accuracy or both on the performance and kinematics in overarm throwing. Perceptual and Motor Skills
Academic article
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing. Perceptual and Motor Skills
Academic article
van den Tillaar, R; Ettema, Gerardus Johannes C. (2003) Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players. Perceptual and Motor Skills
Academic article
Ettema, Gerardus Johannes C. (2002) Effects of contraction history on control and stability in explosive actions. Journal of Electromyography & Kinesiology
Academic article
Ettema, Gerardus Johannes C. (2001) Muscle efficiency: the controversial role of elasticity and mechanical energy conversion in stretch-shortening cycles. European Journal of Applied Physiology
Academic article
Ettema, Gerardus Johannes C; Meijer, Kenneth. (2000) Muscle contraction history: modified Hill versus an exponential decay model. Biological cybernetics
Academic article
Ettema, Gerardus Johannes C. (1999) Human movement from a biological perspective:differentiation of subsystems and biological organisation. Corpus, Psyche et Societas
Academic article
Ettema, Gerardus Johannes C. (1999) Modelling skeletal muscle-tendon units as actuators in motor behaviour: morphological aspects. Corpus, Psyche et Societas
Academic article
Walshe, Andrew; Wilson, Greg J; Ettema, Gerardus Johannes C. (1998) Stretch shorten cycle as compared to isometric preload: contributions to enhanced muscular performance. Journal of applied physiology
Academic article
Ettema, Gerardus Johannes C; Forwood, Mark R; Goh, Judith TW. (1998) A new method to measure elastic properties of plastic-viscoelastic connective tissue. Medical Engineering and Physics
Academic article
Ettema, Gerardus Johannes C; Styles, George; Kippers, Vaughan. (1998) The moment arms of 23 muscles of the upper limb in different elbow and forearm positions. Human Movement Science
Academic article
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Academic article
Ettema, Gerardus Johannes C. (1997) Gastrocnemius muscle length in relation to knee and ankle joint angles: verification of a geometric model and some applications. Anatomical Record
Academic article
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Academic article
Ettema, Gerardus Johannes C. (1997) Muscle length and force generation in bipedal and quadrupedal animals in relation to joint ankles and locomotor behaviour. Anatomical Record
Academic article
Ettema, Gerardus Johannes C. (1996) Contractile behaviour in rat gastrocnemius muscle during small amplitude sine wave perturbations. Journal of Biomechanics
Academic article
Ettema, Gerardus Johannes C. (1996) Elastic - and length-force characteristics of the gastrocnemius of the hopping mouse (notomys alexis) and the rat (rattus norvegicus). Journal of Experimental Biology
Academic article
Ettema, Gerardus Johannes C. (1996) Mechanical efficiency and efficiency of storage and release of series elastic energy in skeletal muscle during stretch-shorten cycles. Journal of Experimental Biology
Academic article

Books

Haugnes, Pål ; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Swedish Winter Sports Research Centre at Mid Sweden University
Academic anthology/Conference proceedings
Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. Book of abstracts: 7th International congress on science and skiing. (1)
Academic anthology/Conference proceedings

Part of book/report

Ettema, Gertjan; McGhie, David. (2019) Biomekanikk og bevegelse. Universitetsforlaget
Chapter
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gertjan. (2016) Mechanical energy and work in treadmill double poling on roller skis.
Academic chapter/article/Conference paper
Bucher, Elias; Danielsen, Jørgen; Hegge, Ann Magdalen; Faude, Oliver; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) Technique differences between male and female cross-country skiers while whole body, upper body and arm poling on a ski ergometer.
Academic chapter/article/Conference paper
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in female and male cross-country skiers.
Academic chapter/article/Conference paper
Skovereng, Knut; Van Beekvelt, Mireille; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise.
Academic chapter/article/Conference paper
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Federolf, Peter Andreas. (2014) Does the Position of the Hinge in Cross-country Ski Bindings Affect Muscle Activation in Skating?. SciTePress
Other
Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what.
Academic chapter/article/Conference paper
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports.
Academic chapter/article/Conference paper
Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body.
Academic chapter/article/Conference paper
Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey.
Academic chapter/article/Conference paper
Supej, Matej; Oggiano, Luca; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Differences in air drag among elite male alpine skiers. Meyer & Meyer Sport
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) Efficiency in cross-country skiing. A brief review. Meyer & Meyer Sport
Academic chapter/article/Conference paper
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training.
Academic chapter/article/Conference paper
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, HC. (2012) The contribution from poling increases gender differences in elite cross-country skiers.
Academic chapter/article/Conference paper
Leirdal, Stig; Ettema, Gerardus Johannes C. (2012) Cycling. Springer
Encyclopedia article
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Løkke, Trine Beate; Holmberg, Hans-Christer. (2011) The impact of pole propulsion on kinematics and fatigue in roller ski skating.
Other
Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig. (2011) Maximal aerobic capacity and efficiency in world class sprint skiers using the double poling and G3 skating technique.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling technique and energy cost in cycling.
Other
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Effect of frequency in roller ski skating.
Other
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2010) Physiological gender differences associated with sprint skiing performance.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) On the relationship between gross efficiency and force effectiveness during ergometer cycling.
Other
Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC. (2009) Efficiency at high work rates in world class skiers.
Other
Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) The physiology of world class sprint skiers.
Other
van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2009) Acomparison of successful and unsuccessful attempts in 1RM bench press.
Other
Ettema, Gerardus Johannes C; McGhie, David; Olsen, Kristian Killi; Lillemark, Kristian. (2009) The effect of body orientation om cycling technique.
Other
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen cadence and gross efficiently during ergometer and free bicycling.
Other
Leirdal, Stig; Sandbakk, Øyvind; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) Sub-maximal efficiency during roller ski skating.
Other
Ettema, Gerardus Johannes C. (2009) Inertial loading in level and uphill cycling.
Other
Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists. Springer Publishing Company
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C; Bråten, Steinar. (2007) On the role of the location of centre of mass in ski jumping.
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C; Hooiveld, Jo; Bråten, Steinar; Bobbert, Maarten F. (2007) The possible use of horizontal propulsion in imitation ski jumps.
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C; Bråten, Steinar. (2006) On the role of the location of centre of mass in ski jumping.
Academic chapter/article/Conference paper
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players.
Academic chapter/article/Conference paper
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males when performing an overarm throwing task.
Academic chapter/article/Conference paper
Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing.
Academic chapter/article/Conference paper
Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum.
Academic chapter/article/Conference paper
Toussaint, Gerthory; Pedersen, Atle; Oterhals, Geir; Fiskvik, Anne Margrete; Ettema, Gerardus Johannes C; Bongaardt, Robert. (2002) La det swinge! Om kropp og bevegelse. Tapir Akademisk Forlag
Academic chapter/article/Conference paper

Report

Haugnes, Pål ; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana. (2023) Doctoral theses at NTNU (2023:235) "Sprinting for the win in cross-country skiing: Pacing strategy, race tactics, and the finish sprint". NTNU Grafisk senter
Doctoral dissertation
Rasdal, Vegard Finserås; Ettema, Gertjan; Sandbakk, Øyvind. (2019) Concurrent optimization of two extremes: performance, physiological, and training characteristics of world class Nordic combined athletes. NTNU
Doctoral dissertation
Danielsen, Jørgen; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Energetics and dynamics of double poling cross-country skiing. NTNU Open
Doctoral dissertation
Haugnes, Pål ; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition? Book of Abstracts: "Performance in snow sports: Translating science into practice". Swedish winter sports research centre, Mid Sweden University
Report
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) Effects of gender and training experience on kinematical and temporal aspects of overarm throwing technique. Norges Teknisk-Naturvitenskapelige Universitet, Program for Bevegelsesvitenskap
Masters thesis
Leirdal, Stig; Ettema, Gerardus Johannes C. (2003) Utholdenhet: Energifrigjøring, prestasjonsfaktorer, trening, tilpasninger og testing. Pensum Topptrenerstudiet Olympiatoppen-NTNU. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) Motor behaviour: notes on neuro-physiology. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) Biomechanics: classic mechanics applied to the musculoskeletal system in a functional setting. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (2000) Physiological and biomechanical constraints: muscle mechanics & motor action. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C; Roeleveld, Karin; Tillaar, Roland van den. (1999) Biologi i Grunnfag Idrett (IDR105) på internet. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C. (1997) The Human Musculoskeletal System. [Mangler utgivernavn]
Compendium
Ettema, Gerardus Johannes C; Kippers, Vaughan. (1996) Proceedings of the 1996 Conference of the anatomical society of Australia and New Zealand. [Mangler utgivernavn]
Report
Ettema, Gerardus Johannes C. (1996) Innovations in teaching musculoskeletal anatomy. [Mangler utgivernavn]
Report

UTSTILLING

Sandbakk, Øyvind; Ettema, Gertjan; Torvik, Per Øyvind; McGawley, Kerry. (2019) Nordic Winter Sports Conference. Nordic Winter Sports Conference
Other presentation

PRODUKT

Ettema, Gerardus Johannes C. (2000) WinLab - a signal analysis package for MatLab.
Software
Ettema, Gerardus Johannes C. (2000) Stability - ver.04 Muscle-joint model for simulation of coordinated movement.
Software
Ettema, Gerardus Johannes C. (1999) SIM-MH ver.04 Simulation package on muscle contraction mechanisms.
Software
Ettema, Gerardus Johannes C. (1998) MuscSim - A muscle contraction and movement simulation package for students, in Matlab.
Software

Teaching

Courses

Media

2022

Academic lecture

Haugnes, Pål ; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Mid Sweden University, NTNU, Nord University Nordic Winter Sports Conference , Østersund 2022-10-03 - 2022-10-04

2021

Academic lecture

Ettema, Gertjan. (2021) Humans are not designed for cycling - right?. Rodrigo Bini Cycling Research Network , nett 2021-09-20 - 2021-09-20

2020

Academic lecture

Seeberg, Trine Margrethe; Kocbach, Jan; Noordhof, Dionne; Danielsen, Jørgen; Haugnes, Pål ; Skovereng, Knut. (2020) COMPARISON OF SUB-TECHNIQUE UTILIZATION, KINEMATICS AND PHYSIOLOGICAL RESPONSES BETWEEN LOW- AND HIGH-INTENSITY ROLLER SKI SKATING. ECSS ECSS Conference , Online 2020-10-28 - 2020-10-30
Academic lecture

Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Danielsen, Jørgen; Skovereng, Knut; Haugnes, Pål . (2020) Efficiency and cycle characteristics across sub-techniques in rollers-ski skating. European College of Sport Science Annual Congress 2020-10-28 - 2020-10-30

2019

Poster

Skovereng, Knut; Haugnes, Pål ; Seeberg, Trine Margrethe; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2019) Comparison of muscle oxygenation in arms and legs between sub-techniques while roller ski skating – a pilot study. . Nordic Winter Sports Conference 2019-05-09 - 2019-05-10
Academic lecture

Skovereng, Knut; Haugnes, Pål ; Seeberg, Trine Margrethe; Noordhof, Dionne; Sandbakk, Øyvind; Ettema, Gertjan. (2019) Terrain-specific fluctuations in muscle oxygen saturation during a simulated sprint skiing competition – a pilot study. Nordic Winter Sports Conference 2019-05-09 - 2019-05-10
Academic lecture

Ettema, Gertjan; Braaten, Steinar. (2019) Optimising performance in ski jumping. . Nordic Winter Sports Conference , Meråker 2019-05-09 - 2019-05-10
Academic lecture

Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2019) Source of power generation during double poling at shallow and steep inclines. The 8th International Congress on Science and Skiing , Vuokatti 2019-03-11 - 2019-03-15
Academic lecture

Ettema, Gertjan. (2019) Sub-techniques in classic and freestyle cross-country skiing – what factors play a role in which to choose?. Human Movement Science, Rijksuniversiteit Groningen, UMCG Groningen Lectures in Movement Science , Groningen 2019-10-17 - 2019-10-17
Poster

Danielsen, Jørgen; Haugnes, Pål ; Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Ettema, Gertjan. (2019) Choice of sub-technique and pole forces during low- and high-intensity roller ski skating across hilly terrain – a pilot study. Nordic Winter Sports Conference 2019-05-09 - 2019-05-10
Poster

Danielsen, Jørgen; Haugnes, Pål ; Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Ettema, Gertjan. (2019) Proskida pole force measurements during cross-country skiing. Poster presentation. Olympiatoppen Olympiatoppens forskningskonferanse , Oslo 2019-09-25 - 2019-09-25
Poster

Skovereng, Knut; Haugnes, Pål ; Seeberg, Trine Margrethe; Noordhof, Dionne; Ettema, Gertjan; Kocbach, Jan. (2019) Comparison of muscle oxygenation during different sub-techniques in ski-skating. Olympiatoppen Olympiatoppens forskningskonferanse , Oslo 2019-09-25 - 2019-09-25

2018

Academic lecture

Almquist, Nicki Winfield; Ellefsen, Stian; Ettema, Gertjan; Sandbakk, Øyvind; Rønnestad, Bent. (2018) Effect of including 30-s sprints in prolonged endurance exercise on muscular adaptations and gross efficiency in highly trained cyclists. Cycling and Science , Nantes 2018-10-04 - 2018-10-05
Academic lecture

McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2018) Strength determinants of jump height in the jump throw movement in women handball players. ECSS Congress of the European College of Sport Science , Dublin 2018-07-04 - 2018-07-07
Poster

Skovereng, Knut; Kolsung, Erik Borg; Ettema, Gertjan. (2018) On the effect of constant and variable load during pedaling in elite cyclists. Olympiatoppens forskningskonferanse , Oslo 2018-09-25 - 2018-09-25
Academic lecture

Kolsung, Erik Borg; Skovereng, Knut; Ettema, Gertjan. (2018) Physiological response to cycling with variable versus constant power output. Science in cycling , Nantes 2018-07-04 - 2018-07-05

2017

Poster

Skovereng, Knut; Ettema, Gertjan; Aasvold, Lorents Ola. (2017) Low cadence increases hip joint contribution during cycling at different power outputs. Olympiatoppen Olympiatoppens forskningskonferanse , Oslo 2017-09-12 - 2017-09-12
Lecture

Sandbakk, Øyvind; Ettema, Gertjan. (2017) Motion capture in elite sport athletes. GEMS, NTNU Seminar GEMS , St.Olavs Hospital 2017-11-27 -
Poster

McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan; Gøran, Paulsen; Østerås, Sindre. (2017) Determinants of sport-specific jump height in female handball players. Olympiatoppen Olympiatoppens research conference 2017 , Oslo 2017-09-13 - 2017-09-13
Academic lecture

Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2017) Joint specific power production in cycling: the effect of cadence and athlete level. Science in cycling , Dusseldorf 2017-06-29 - 2017-06-30
Poster

Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2017) On the effect of changing handgrip position during cycling at different power outputs. Olympiatoppen Olympiatoppens forskningskonferanse , Oslo 2017-09-12 - 2017-09-12
Academic lecture

Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2017) Joint specific power is not affected by changes in hand position in recreational and elite cyclists. Science in cycling , Dusseldorf 2017-06-29 - 2017-06-30
Poster

Baumgart, Julia Kathrin; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Gas exchange and blood lactate thresholds in Paralympic athletes: do they really exist? . Olympiatoppen forskningskonferanse 2017-09-13 - 2017-09-13
Poster

Baumgart, Julia Kathrin; Guertler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Comparison of VO2peak and exercise efficiency between upper-body poling and arm crank ergometry in trained able-bodied and paraplegic participants . Olympiatoppen forskningskonferanse 2017-09-13 - 2017-09-13
Poster

McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2017) Is there a trade-off between maximum jumping and throwing capability in the handball jump throw?. Olympiatoppen Olympiatoppens research conference 2017 , Oslo 2017-09-13 - 2017-09-13
Poster

Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Comparison of Performance-Levels and Sex on Sprint Race Performance in the Biathlon World Cup. Olympiatoppen Olympiatoppens forskningskonferanse , Oslo 2017-09-13 -
Academic lecture

Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition?. The Swedish Winter Sports Research Centre NVC conference, Performance in snow sports: Translating science into practice , Åre 2017-10-05 - 2017-10-06
Poster

Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition?. Olympiatoppen Olympiatoppens Forskningskonferanse 2017 , Oslo 2017-09-13 -
Lecture

Baumgart, Julia Kathrin; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Endurance performance in Paralympic sitting sports – testing and training. NVC conference 2017-10-05 - 2017-10-06
Academic lecture

Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The Role of Speed and Incline on the Spontaneous Choice of Technique in Classical Roller-Skiing. 26th Annual Meeting of ESMAC , Trondheim 2017-09-07 - 2017-09-09
Academic lecture

Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2017) The effect of fatigue on choice of technique and physiological response in cross-country skiing. NVC NVC conference “Performance in snow sports: Translating science into practice” , Åre 2017-10-05 - 2017-10-06

2016

Academic lecture

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2016) Mechanical energy and work in treadmill double poling on roller skis. 7th International Congress on Science and SKiing 2016-12-10 - 2016-12-15
Poster

Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. Olympiatoppens forskningskonferanse 2016 2016-09-27 - 2016-09-27
Academic lecture

Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. 7th International Congress On Science And Skiing 2016-12-10 - 2016-12-15
Poster

Vandbakk, Kristine; Welde, Boye; Kruken, Andrea; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine. (2016) Effects of upper-body sprint-interval training on strength and endurance adaptations in female cross-country skiers. Olympiatoppens forskningskonferanse 2016-09-27 -
Poster

Ettema, Gertjan; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. Olympiatoppens forskningskonferanse 2016-09-27 -
Poster

Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Association between laboratory capacities and world-cup performance in nordic combined. Olympiatoppen Olympiatoppens forskningskonferanse , Ullevål, Oslo 2016-09-27 - 2016-09-27
Academic lecture

Welde, Boye; Vandbakk, Kristine; Hovstein, Andrea; Baumgart, Julia Kathrin; Ettema, Gerardus Johannes C; Karlsen, Trine. (2016) On the effects of upper-body sprint-interval training on maximal strength and aerobic Power in female cross-country skiers. University of Salzburg 7th International Congress on Science and Skiing , St. Christoph a. Arlberg 2016-12-10 - 2016-12-15

2015

Poster

Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. Olympiatoppens Forskningskonferanse , Oslo 2015-09-10 -
Academic lecture

Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, H-C; Ettema, Gerardus Johannes C. (2015) Mechanical energy fluctuations and propulsion in double poling. 3rd International Congress on Science and Nordic Skiing , Vuokatti 2015-06-05 - 2015-06-08
Academic lecture

Ettema, Gerardus Johannes C; Danielsen, Jørgen; Sandbakk, Øyvind. (2015) Comparison of center of mass energy fluctuations by use of force and motion capture recordings. 3rd International Congress on Science and Nordic Skiing , Vuokatti 2015-06-05 - 2015-06-08
Poster

Luchsinger, Harri; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Baumeister, Jochen; Schubert, Michael. (2015) A comparison of brain activity during shooting among biathletes and cross-country skiers before and after vigorous exercise. Olympiatoppen Olympiatoppens forskningskonferanse , Olympiatoppen Oslo 2015-09-10 - 2015-09-10
Poster

Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2015) Mechanical power and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. Olympiatoppens forskningskonferanse 2018 2015-09-25 - 2018-09-25

2014

Lecture

Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in male and female cross-country skiers. 19th Annual Congress of the ECSS, Amsterdam, The Netherlands , Amsterdam 2014-07-02 - 2014-07-05
Poster

Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; De Koning, Jos; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo. 2014-09-18 - 2014-09-18
Academic lecture

Skovereng, Knut; Van Beekvelt, Mireille; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise. E U R O P E A N C O L L E G E O F S P O R T S C I E 19th ECSS Congress 2-5 July 2014 Amsterdam/NED , Amsterdam 2014-06-02 - 2014-06-05
Lecture

Bolger, Conor; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Federolf, Peter Andreas. (2014) Does the Position of the Hinge in Cross-country Ski Bindings Affect Muscle Activation in Skating?. 2nd International Congress on Sport Science Research and Technology Support, 2014, Rome, Italy. 2014-10-16 - 2014-10-18
Poster

Grasaas, Christina Åsan; Ettema, Gerardus Johannes C; Hegge, Ann Magdalen; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in technique and efficiency after high-intensity exercise during roller ski skating. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo. 2014-09-18 - 2014-09-18
Poster

Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer; Faude, Oliver; Sandbakk, Øyvind. (2014) A comparison of arm, upper body and whole body poling in male and female cross-country skiers. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo. 2014-04-18 - 2014-04-18
Poster

Skovereng, Knut; Ettema, Gerardus Johannes C; Van Beekvelt, Mireille. (2014) Oxygen consumption in the whole body and the local muscles. NIH Olympiatoppens Forskningskonferanse , OSLO 2014-09-14 - 2014-09-14
Poster

Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Upper-body maximal strength and power predict sprint performance in Ice sledge-hockey. NIH Olympiatoppens Forskningskonferanse , OSLO 2014-09-14 - 2014-09-14
Academic lecture

Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what?. 19th Annual Congress of the ECSS 2014-07-02 - 2014-07-05
Poster

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Energy Fluctuations in Double Poling. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Poster

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Relative power contributions in double poling. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Poster

Sandbakk, Øyvind; Rønnestad, Bent; Hansen, Mads; Ettema, Gerardus Johannes C. (2014) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Poster

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2014) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Poster

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2014) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Poster

Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiology of world-class sprint skiers. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -
Academic lecture

Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports. 19th Annual Congress of the ECSS 2014-07-02 - 2014-07-05
Academic lecture

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities. 19th Annual Congress of the ECSS 2014-07-02 - 2014-07-05
Poster

Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2014) Effects of intensity and duration in aerobic high-intensity interval training. Olympiatoppens Forskningskonferanse 2014 2014-09-14 -

2013

Academic lecture

Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body. 18th Annual Congress of the ECSS 2013-06-26 - 2013-06-29
Academic lecture

Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities. 18th Annual Congress of the ECSS 2013-06-26 - 2013-06-29
Academic lecture

Hegge, Ann Magdalen H. S.; Holmberg, Hans-Christer; Ettema, Gertja. (2013) Comparison of the G3 and G4 skating techniques in cross-country skiing. 6th International Congress on Science and Skiing, St. Christoph a. Arlberg, Austria , St. Christoph a. Arlberg 2013-12-14 - 2013-12-19
Poster

Hegge, Ann Magdalen H. S.; Ettema, Gertja; Sandbakk, Øyvind. (2013) Determinants of a 3-min all-out upper body poling exercise in elite cross-country skiers. 6th International Congress on Science and Skiing, St. Christoph a. Arlberg, Austria , St. Christoph a. Arlberg 2013-12-14 - 2013-12-19
Academic lecture

Ettema, Gertja; Grasaas, Christina Åsan; Grasaas, Erik; Sandbakk, Øyvind. (2013) Changes in technique after high-intensity exercise during roller ski skating. 6th International congress of science and skiing 2013-12-14 - 2013-12-19
Academic lecture

Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey. European College of Sport Science , Barcelona 2013-06-26 - 2013-06-29
Academic lecture

Hegge, Ann Magdalen H. S.; Ettema, Gertja; Hoset, Martin; Rognstad, Asgeir Bakken; De Koning, Jos; Sandbakk, Øyvind. (2013) Physiological and biomechanical analysis of the arm swing in roller ski skating. 15th Annual Congress of the ECSS, Barcelona, Spain , Barcelona 2013-06-26 - 2013-06-29

2012

Poster

McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. The Engineering of Sport 9 , Lowell, MA 2012-07-09 - 2012-07-13
Academic lecture

van den Tillaar, Roland ; Sæterbakken, Atle Hole; Ettema, Gerardus Johannes C. (2012) A comparison of muscle activation between maximum pure concentric and counter movement bench pressing. ACU XXX International Symposium on Biomechanics in Sports 2012. Melbourne, Australia 01.07-5.07.12. , Melbourne 2012-07-01 - 2012-07-05
Academic lecture

Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey. 17th Annual Congress of the ECSS , Bruges 2012-07-04 - 2012-07-07
Poster

Sandbakk, Øyvind; Bucher Sandbakk, Silvana; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training. University of Jyväskylä 2nd International Conference of Science in Nordic Skiing , Vuokatti 2012-05-25 - 2012-05-31
Academic lecture

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The contribution from poling increases gender differences in elite cross-country skiers. 2nd international conference of science in nordic skiing 2012-05-28 - 2012-05-31
Poster

Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey. 17th Annual Congress of the ECSS , Bruges 2012-07-04 - 2012-07-07
Poster

van Weerdenburg, Ingrid J; Peters, Marlijn; Geurts, Alexander C; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2012) The influence of foot dominance and task on the trajectory of CoP and CoG in planned gait termination. Joint World Congress of Gait & Mental Function , Trondheim 2012-06-24 - 2012-06-28
Poster

Peters, Marlijn; van Weerdenburg, Ingrid J; Geurts, Alexander C; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2012) Postural steadiness during tandem stance: The influence of foot positioning and weight distribution on center of gravity and center of pressure trajectories. Joint World Congress of Gait & Mental Function , Trondheim 2012-06-24 - 2012-06-28

2011

Academic lecture

Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig. (2011) Maximal aerobic capacity and efficiency in world class sprint skiers using the double poling and G3 skating technique. 16th Annual Congress of the European College of Sport Science 2011-07-06 - 2011-07-09
Academic lecture

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Løkke, Trine Beate; Holmberg, Hans-Christer. (2011) The impact of pole propulsion on kinematics and fatigue in roller ski skating. 16th Annual Congress of the European College of Sport Science , Liverpool 2011-07-06 - 2011-07-09
Academic lecture

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. 58th Annual Meeting and 2nd World Congress on Exercise is Medicine , Denver 2011-05-31 - 2011-06-04
Academic lecture

Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling technique and energy cost in cycling. 16th Annual Congress of the European College of Sport Science 2011-07-06 - 2011-07-09
Academic lecture

Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Larger bilateral force deficit in proximal than distal joints might be linked to differences in interhemispheric communication. European College of Sport Science 16th Annual Congress of the European College of Sport Science , Liverpool 2011-07-06 - 2011-07-09

2010

Poster

Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Effect of frequency in roller ski skating. University of Salzburg 5th International Congress on Science and Skiing - ICSS 2010 , Arlberg 2010-12-14 - 2010-12-19
Academic lecture

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2010) Physiological gender differences associated with sprint skiing performance. University of Salzburg 5th International Congress on Science and Skiing - ICSS 2010 , Arlberg 2010-12-14 - 2010-12-19

2009

Academic lecture

Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) On the relationship between gross efficiency and force effectiveness during ergometer cycling. Aristotle University of Thessaloniki, Lab of Sport Biomechan 11th International Conference of Sport Kinetics , Kallithea, Chalkidiki 2009-09-25 - 2009-09-27
Academic lecture

Ettema, Gerardus Johannes C; McGhie, David; Olsen, Kristian Killi; Lillemark, Kristian. (2009) The effect of body orientation om cycling technique. Norwegian School of Sport Sciences 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Academic lecture

van den Tillaar, Roland ; Ettema, Gerardus Johannes C. (2009) Acomparison of successful and unsuccessful attempts in 1RM bench press. Norwegian Scholl of Sport Sciences 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Academic lecture

Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen cadence and gross efficiently during ergometer and free bicycling. Norwegian School of Sport Sciences 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Poster

Leirdal, Stig; Sandbakk, Øyvind; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) Sub-maximal efficiency during roller ski skating. Norwegian School of Sport Science 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Poster

Ettema, Gerardus Johannes C. (2009) Inertial loading in level and uphill cycling. Aristotle University of Thessaloniki, Lab of Sport Biomechan 11th International Conference of Sport Kinetics , Kallithea, Chalkidiki 2009-09-25 - 2009-09-27
Poster

Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC. (2009) Efficiency at high work rates in world class skiers. Norwegian School of Sport Sciences 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Poster

Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) The physiology of world class sprint skiers. Norwegian School of Sport Sciences 14th Annual Congress of the ECSS , Oslo 2009-06-24 - 2009-06-27
Poster

Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2009) Dual tasking: The effect of task, frequency, and age on variability of finger tapping. International Society of Motor Control Progress in Motor Control VII , Marseille 2009-07-23 - 2009-07-25

2008

Academic lecture

Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists. 7th ISEA CONFERENCE 2008 2008-06-02 - 2008-06-02
Poster

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2008) The effect of gender and training experience on body segments’ contribution in overarm throwing. Institute of Sport of the Autonomous Region of Madeira 2nd Congress of Complex System in Sports, 10th European Workshop of Ecological Psychology , Funchal, Madeira 2008-11-05 - 2008-11-08

2006

Academic lecture

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males in fast overarm throws. Program for bevegelsesvitenskap, NTNU Nordisk Konferanse i Bevegelsesvitenskap 2006 , Trondheim 2006-10-26 - 2006-10-27
Academic lecture

Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum. Program for bevegelsesvitenskap, NTNU Nordisk Konferanse i Bevegelsesvitenskap 2006 , Trondheim 2006-10-26 - 2006-10-27
Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing. Program for bevegelsesvitenskap, NTNU Nordisk Konferanse i Bevegelsesvitenskap 2006 , Trondheim 2006-10-26 - 2006-10-27
Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players. Dep. of Sport Science, University of Salzburg The XXIV International Symposium on Biomechanics in Sports , Salzburg 2006-07-14 - 2006-07-18

2005

Academic lecture

Leirdal, Stig; Ettema, Gerardus Johannes C; Bråten, Steinar; Kvålsvoll, Atle. (2005) Analyses of technique in cycling: A pilot study. NTNU, Program for bevegelsesvitenskap BIOMOVE , Trondheim 2005-10-25 - 2005-10-25
Academic lecture

Leirdal, Stig; Ettema, Gerardus Johannes C; Bråten, Steinar; Kvålsvoll, Atle. (2005) Analyses of technique in cycling: A pilot study. Norges idrettshøgskole Nordisk konferanse om bevegelsesanalyse , Oslo 2005-11-17 - 2005-11-18
Academic lecture

Oterhals, Geir; Ettema, Gerardus Johannes C. (2005) Bilateral Deficit in Human Jumping Performance. NTNU - Program for bevegelsesvitenskap Biomove , Trondheim 2005-10-25 - 2005-10-25

2004

Academic lecture

Ettema, Gerardus Johannes C. (2004) Computer simulation of ski jumping: Furthering our understanding of task constraints. Forskningsseminar bevegelsesvitenskap, NTNU 2004-08-26 -
Academic lecture

Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Bråten, Steinar; Løset, Sveinung. (2004) Influence of body position on performance in sprint cross-country ski skating. International Conference of Sport Sciences 2004-03-01 -
Popular scientific lecture

Ettema, Gerardus Johannes C; Roeleveld, Karin. (2004) Prøv deg på skihoppsimulator. Forskningstorget , Trondheim 2004-09-15 - 2004-09-18

2003

Academic lecture

Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Vereijken, Beatrix; Bråten, S.. (2003) Influence of body position on performance in sprint cross-country ski skating. Nordisk konferanse i Bevgelsesvitenskap, NKB 2003 , Trondheim 2003-10-31 -
Academic lecture

Tillaar, Roland van den; sæterbakken, Atle; Manger, Kyrre; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing in novices. Nordic conference in Human Movement Sciences; Nordisk konferense i bevegelsesvitenskap , Trondheim 2003-10-31 -
Academic lecture

Ettema, Gerardus Johannes C; Tillaar, Roland van den; Kristensen, Geir Olav. (2003) Speed specificity in sprint training. 8th Annual Congress of the European College of Sport Science , Salzburg 2003-07-12 -
Academic lecture

Bråten, S.; Ettema, Gerardus Johannes C. (2003) Funksjonell feedback i teknikktrening. Nordisk konferanse i bevegelsesvitenskap 2003 , Trondheim, Norway 2003-10-31 -
Academic lecture

Ettema, Gerardus Johannes C. (2003) Computer simulation of movement dynamics in research and teaching. Nordisk konferanse i bevegelsesvitenskap 2003 , Trondheim, Norway 2003-10-31 -
Academic lecture

Brændvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2003) Adaptions following a transtibal amputation - The emergence of new muscle and joint assemblies. XV International Interbor Congrass on prosthetics and ortotics , Budapest 2003-06-04 -
Academic lecture

Bråten, S.; Ettema, Gerardus Johannes C. (2003) Skihopp - prøving eller læring?. Nordic Conference in Movement Science, 2003 , Trondheim, Norway 2003-10-31 -
Popular scientific lecture

Ettema, Gerardus Johannes C; Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Vereijken, Beatrix. (2003) Sprint Langrenn og Teknikk - Kroppsposisjon, luftmotstand, effekt og kostnad. OLT-fagmøte - langrenn , Toppidrettssenteret, Oslo 2003-12-03 -
Poster

Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2003) Power traning and bi-articular muscle function in vertical jumping. ECSS Salzburg 2003, 8th annual congress european college of sport science , Salzburg, Austria 2003-07-12 -

2002

Popular scientific lecture

Ettema, Gerardus Johannes C; Tegdan, Trine. (2002) Bevegelsesvitenskap ved NTNU. Fysiotherapiforbundets avdeling i Nord-Trøndelag , Stjørdal 2002-10-02 -
Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C; Gløssen, Tommy. (2002) Effect of three different strength training programs with the same workload on velocity in overarm throwing. 3rd international conference on strength traning; Strength training in sport and Rehabilitation , Budapest, Hungary 2002-11-17 -
Academic lecture

Tegdan, Trine; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Fatigue and muscle coordination in subjects with patellofemoral pain syndrome. Symposium for Bevegelsesanalyse , Oslo, Norge 2002-10-18 -
Academic lecture

Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Power training and biarticular muscle function in vertical jumping. Symposium for Bevegelsesanalyse , Oslo, Norge 2002-10-18 -
Academic lecture

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Neuro-muscular adaptation following a below knee amputation. Symposium for Bevegelsesanalyse , Oslo, Norge 2002-10-18 -
Academic lecture

Ettema, Gerardus Johannes C; Tegdan, Trine; Roeleveld, Karin. (2002) Fatigue and muscle coordination in subjects with patellofemoral pain syndrome. IVth World Congress of Biomechanics, August 4-9 2002, Calgary Canada. , Calgary 2002-08-09 -
Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2002) The proximal-distal sequence in overarm throwing and the effect of ball weight. IV World Congress Biomechanics, 4-9 August, 2002 , Calgary 2002-08-09 -
Academic lecture

Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2002) Neural adaptations during learning a strength task. Symposium for Bevegelsesanalyse , Oslo, Norge 2002-10-18 -
Academic lecture

Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Karlsson, J Stefan; Ettema, Gerardus Johannes C. (2002) Neural adaptations during learning a strength task. International society for elektromyography and kinesiology , vienna, austria 2002-06-15 -
Popular scientific lecture

Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2002) Bevegelsesvitenskap, hester og terapi. annual meeting of the fagforum for terapiridning , bratsberg, Trondheim 2002-04-15 -
Poster

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Neuro-muscular adaptation following a below knee amputation. XIVth Congress of the International Society of Electrophysiology and Kinesiology "Standardization for a better exchange of ideas" , Vienna, Austria 2002-06-25 -
Academic lecture

Fiskvik, A.; Vereijken, Beatrix; Ettema, Gerardus Johannes C; Pedersen, Arve Vorland; Bongaardt, Robert. (2002) The body in motion as a scientific phenomenon. International conference on cognitive aspects of dance , Trondheim 2002-01-01 - 2002-01-15

2001

Academic lecture

Ettema, Gerardus Johannes C. (2001) Muscle force generation and stability in explosive actions. 6th Annual Congress of the European College of Sport Science , Cologne 2001-07-28 -
Academic lecture

Haukvik, Ingrid Vee; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2001) Comparison of coordination in vertical jumping in adults and young children. XVIII th International Congress of Biomechanics , Zurich 2001-07-13 -
Academic lecture

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2001) Nevro-muskulære tilpasninger etter en leggamputasjon. tverrfaglig symposium , Jønkøping, Sverige 2001-11-13 -
Popular scientific lecture

Ettema, Gerardus Johannes C. (2001) Bevegelseslære og anatomi. Møte av Rådet for folkemusikk og folkedans, NTNU , Trondheim 2001-03-11 -
Poster

Ettema, Gerardus Johannes C. (2001) Muscle activation of quadriceps femoris in subjects with patellofemoral pain syndrome and healthy subjects when fatigued. Idrettsmedisinsk Høstkongress , Oslo 2001-11-04 -

2000

Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2000) Influence of instruction on velocity and coordination of overarm throwing in handball. International Conference on Motor control,Bielsko-Biata, Poland, 27-29 November 2000 , Bielsko-Biata 2000-10-29 -
Academic lecture

Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2000) Influences of instruction on velocity and accuracy of overarm throwing. Fifth Annual Congress of the European College of Sport Science, Jyväskylä Finland, 19-23 July 2000. , Jyväskylä, Finland 2000-07-23 -
Academic lecture

Ettema, Gerardus Johannes C. (2000) Bewegingswetenschappen in Trondheim - mogelijkheden en begrenzingen. Institute for fundamental and clinical human movement sciences (IFKB), , Amsterdam 2000-11-17 -
Academic lecture

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - III: Musklel. HiST - Institutt for fysioterapeututdanning , Trondheim 2000-12-04 -
Academic lecture

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - I: Kraft i bevegelse. HiST - Institutt for fysioterapeututdanning , Trondheim 2000-11-07 -
Academic lecture

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - II: Mekanikk og vev. HiST - Institutt for fysioterapeututdanning , Trondheim 2000-11-10 -

1999

Academic lecture

Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Musculoskeletal constraints in motor control. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management & Rehabilitation , 1-3 May, Coolum
Academic lecture

Kippers, Vaughan; Ettema, Gerardus Johannes C; Taylor, Emma; North, David. (1999) Muscular control of attempted movements at joints with two degrees of freedom. Fifth IOC World Congress , Sydney
Academic lecture

North, David; Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Muscular control of combined knee movements. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management , Coolum
Academic lecture

Taylor, Emma; Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Muscular control of complex elbow movements. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management , Coolum
Academic lecture

Ettema, Gerardus Johannes C. (1999) Motor Control: structure-action-function. Norges Idrettshøgskole - IFIB , Oslo 1999-10-04 -
Academic lecture

Ettema, Gerardus Johannes C. (1999) Biological Factors in Human Movement - The importance of being biological. Human Movement Science in Perspective , Trondheim 1999-05-06 -
Academic lecture

Ettema, Gerardus Johannes C. (1999) Muscle coordination in movement: lessons learned from static actions. International Research Course on Dance, Culture and Human Movement Science , Trondheim 1999-11-17 -

1998

Popular scientific lecture

Ettema, Gerardus Johannes C. (1998) Controlling Ground Reaction Force. Human Movement Science Seminar 1998 , Trondheim 1998-03-27 -
Academic lecture

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion II: Muscle as engine or spring. Department of Anatomical Sciences, The University of Queensland , Brisbane 1998-09-03 -
Academic lecture

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion I: muscle properties. Department of Anatomical Sciences, The University of Queensland , Brisbane 1998-09-03 -
Academic lecture

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion III: Locomotion styles. Department of Anatomical Sciences, The University of Queensland , Brisbane 1998-09-08 -
Academic lecture

Ettema, Gerardus Johannes C. (1998) Hill-type muscle models and an alternative describing contraction history. Third World Congress of Biomechanics , Sapporo

1997

Academic lecture

Ettema, Gerardus Johannes C. (1997) Muscle stiffness : significance in motor control. Biannual Conference of the Department of Biomedical Sciences, U niversity of Sydney (1997-10-02/04) , Sydney
Academic lecture

Ettema, Gerardus Johannes C. (1997) Series elastic energy in stretch-shortening cycle. 11th Biennial Conference of the Department of Biomedical Sciences of the Faculty of Health sciences , Sydney 1997-10-04 -
Academic lecture

Ettema, Gerardus Johannes C. (1997) Muscle stiffness: significance in motor control. 11th biennial Conference of the Department of Biomedical Sciences of the Faculty of Health sciences , Sydney 1997-10-04 -
Academic lecture

Ettema, Gerardus Johannes C. (1997) Series elastic energy in stretch-shortening cycle. Biannual Conference of the Department of Biomedical Sciences, U niversity of Sydney (1997-10-02/04) , Sydney

1996

Academic lecture

Ettema, Gerardus Johannes C. (1996) Effects of muscle fatigue on series elastic stiffness and mechanical efficiency in skeletal muscle. Proceedings of The Eleventh Congress of the International Society of Electrophysiological Kinesiology , Enschede, The Netherlands 1996-10-30 -
Academic lecture

Ettema, Gerardus Johannes C; Blowers, Alan. (1996) Advances in artificial stimulation of muscle using a direct current block. Proceedings of The Eleventh Congress of the International Society of Electrophysiological Kinesiology , Enschede, The Netherlands 1996-10-30 -
Academic lecture

Ettema, Gerardus Johannes C; Kippers, Vaughan; Weinrauch, Patrick. (1996) Influence of hip rotation on activation of individual human thigh muscles during isometric knee extensor exercises. The Eleventh Congress of the International Society of Electrophysiological Kinesiology , Enschede, The Netherlands 1996-10-30 -
Academic lecture

Ettema, Gerardus Johannes C; Weinrauch, Patrick; Kippers, Vaughan. (1996) Influence of hip rotation on coordination of knee extensor exercises. The 1996 Conference of the Anatomical Society of Australia and New Zealand , Brisbane 1996-07-12 -
Academic lecture

Ettema, Gerardus Johannes C. (1996) Misconceptions in skeletal muscle function introduced by level-one gross anatomy teaching. The 1996 Conference of the Anatomical Society of Australia and New Zealand, Brisbane , Brisbane 1996-07-12 -
Academic lecture

Ettema, Gerardus Johannes C. (1996) Muscle length in bipedal and quadrupedal animals in relation to locomotor behaviour. The First Australasian Biomechanics Conference , Sydney 1996-02-02 -

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Gertjan Ettema

Gertjan Ettema

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