Espen Alexander F. Ihlen

Associate Professor

Department of Neuromedicine and Movement Science Faculty of Medicine and Health Sciences

espen.ihlen@ntnu.no +47 47354674

Bevegelsessenteret, Øya

espen.ihlen@ntnu.no

Bakgrunn og aktiviteter

Espen A. F. Ihlen is associate Professor at Department of Neuromedicine and Human Movement Science (INB). He has background in Human Movement Science, Informatics, Mathematics, and Physics. His main interest is application of machine learning in clinical movement analysis.

Education

Bachelor in Human Movement Science (1999-2003)
Master in Human Movement Science (2003-2007)
PhD in clinical medicine (2009-2014)

Research

Signalprocessing of human movement and activity data
Machine learning used in prediction models and risk assessments of movement related problems
Non-linear time series analyses focusing on:
Hilbert spectral analyses
Wavelet analyses and decompositions
Multifractal analyses
Multiplicative cascading processes
Lyapunov stability
Fractional stability
Application of analyses and models to movements of older adults and infants at risk of motor disorders

Projects

ADAPT: A personalized fall risk assessment system for promoting independent living
PROMISE: Early diagnosis and intervention in infants at risk of motor disability

Teaching assignments

Introduction to signal processing in Matlab (BEV3201)
Biomechanics (BEV2005)
Measurement of physical activity (BEV2101)
Motor control and movement disorders (BEV3103)

Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

Journal publications

Bergquist, Ronny; Nerz, Corinna; Taraldsen, Kristin; Mellone, Sabato; Ihlen, Espen Alexander F.; Vereijken, Beatrix; Helbostad, Jorunn L.; Becker, Clemens; Mikolaizak, A. Stefanie. (2020) Predicting Advanced Balance Ability and Mobility with an Instrumented Timed Up and Go Test. Sensors. vol. 20 (17).
Groos, Daniel; Adde, Lars; Ihlen, Espen Alexander F.. (2020) Approaching human precision on automatic markerless tracking of human movements. Gait & Posture. vol. 81.
Groos, Daniel; Ramampiaro, Heri; Ihlen, Espen Alexander F.. (2020) EfficientPose: Scalable single-person pose estimation. Applied intelligence (Boston).
Awais, Muhammad; Chiari, Lorenzo; Ihlen, Espen Alexander F.; Helbostad, Jorunn L.; Palmerini, Luca. (2019) Physical Activity Classification for Elderly People in Free-Living Conditions. IEEE journal of biomedical and health informatics. vol. 23 (1).
Groos, Daniel; Aurlien, Kristian; Ramampiaro, Heri; Ihlen, Espen Alexander F.; deRegnier, RA; Peyton, Colleen; Silberg, Inger Elisabeth; Songstad, Nils Thomas; Thomas, Niranjan; Adde, Lars. (2019) Deep Learning‐based infant motion tracking facilitating early detection of cerebral palsy. Developmental Medicine & Child Neurology. vol. 61.
Ihlen, Espen Alexander F.; Støen, Ragnhild; Boswell, Lynn; de-Regnier, Raye-Ann; Fjørtoft, Toril Larsson; Gaebler-Spira, Deborah; Labori, Inger Cathrine; Loennecken, Marianne; Msall, Michael E.; Møinichen, Unn Inger; Peyton, Colleen; Schreiber, Michael D.; Silberg, Inger Elisabeth; Songstad, Nils Thomas; Vågen, Randi Tynes; Øberg, Gunn Kristin; Adde, Lars. (2019) Machine Learning of Infant Spontaneous Movements for the Early Prediction of Cerebral Palsy: A Multi-Site Cohort Study. Journal of Clinical Medicine. vol. 9 (1).
Støen, Ragnhild; Boswell, Lynn; De Regnier, Raye-Ann; Fjørtoft, Toril Larsson; Gaebler-Spira, Deborah; Ihlen, Espen Alexander F.; Labori, Cathrine; Loennecken, Marianne; Msall, Michael E.; Møinichen, Unn Inger; Peyton, Colleen; Russow, Annamarie; Schreiber, Michael D.; Silberg, Inger Elisabeth; Songstad, Nils Thomas; Vågen, Randi Tynes; Øberg, Gunn Kristin; Adde, Lars. (2019) The Predictive Accuracy of the General Movement Assessment for Cerebral Palsy: A Prospective, Observational Study of High-Risk Infants in a Clinical Follow-Up Setting. Journal of Clinical Medicine. vol. 8 (11).
Adde, Lars; Yang, Hong; Sæther, Rannei; Jensenius, Alexander Refsum; Ihlen, Espen Alexander F.; Cao, Jia-yan; Støen, Ragnhild. (2018) Characteristics of general movements in preterm infants assessed by computer-based video analysis. Physiotherapy Theory and Practice. vol. 34 (4).
Bourke, Alan; Ihlen, Espen Alexander F.; Helbostad, Jorunn L.. (2018) Development of a gold-standard method for the identification of sedentary, light and moderate physical activities in older adults: Definitions for video annotation. Journal of Science and Medicine in Sport.
Ihlen, Espen Alexander F.; Schooten, K S; Bruijn, S M; Dieën, J H; Vereijken, Beatrix; Helbostad, Jorunn L.; Pijnappels, Mirjam. (2018) Improved prediction of falls in community-dwelling older adults through phase-dependent entropy of daily-life walking. Frontiers in Aging Neuroscience. vol. 10.
Bourke, Alan; Ihlen, Espen Alexander F.; Bergquist, Ronny; Wik, Per Bendik; Vereijken, Beatrix; Helbostad, Jorunn L.. (2017) A physical activity reference data-set recorded from older adults using body-worn inertial sensors and video Technology - The ADAPT study data-set. Sensors. vol. 17 (3).
Ihlen, Espen Alexander F.; van Schooten, Kimberley S; Bruijn, Sjoerd M; Pijnappels, Mirjam; van Dieen, Jaap H. (2017) Fractional stability of trunk acceleration dynamics of daily-life walking: toward a unified concept of gait stability. Frontiers in Physiology. vol. 8.
Bourke, Alan; Ihlen, Espen Alexander F.; Van de Ven, Pepijn W.J.; Nelson, John; Helbostad, Jorunn L.. (2016) Video analysis validation of a real-time physical activity detection algorithm based on a single waist mounted tri-axial accelerometer sensor. IEEE Engineering in Medicine and Biology Society. Conference Proceedings. vol. 2016-October.
Bourke, Alan; Ihlen, Espen Alexander F.; Wik, Per Bendik; Bergquist, Ronny; Helbostad, Jorunn L.. (2016) Validation of the activPAL3 for Measurement of Physical Activity in Older Adults in a Semi-Structured Protocol Using Video Analysis. Gait & Posture. vol. 49 (128).
Bourke, Alan; Klenk, Jochen; Schwickert, Lars; Aminian, Kamiar; Ihlen, Espen Alexander F.; Mellone, Sabato; Helbostad, Jorunn L.; Chiari, Lorenzo; Becker, Clemens. (2016) Fall detection algorithms for real-world falls harvested from lumbar sensors in the elderly population: A machine learning approach. IEEE Engineering in Medicine and Biology Society. Conference Proceedings. vol. 2016-October.
Ihlen, Espen Alexander F.; Weiss, Aner; Bourke, Alan; Helbostad, Jorunn L.; Hausdorff, Jeffrey M.. (2016) The complexity of daily life walking in older adult community-dwelling fallers and non-fallers. Journal of Biomechanics. vol. 49 (9).
Awais, Muhammad; Palmerini, Luca; Bourke, Alan; Ihlen, Espen Alexander F.; Helbostad, Jorunn L.; Chiari, Lorenzo. (2016) Performance Evaluation of State of the Art Systems for Psysical Activity Classification of Older Subjects Using Inertial Sensors in a Real Life Scenario: A Benchmark Study. Sensors. vol. 16.
Bardal, Ellen Marie; Roeleveld, Karin; Ihlen, Espen Alexander F.; Mork, Paul Jarle. (2016) Micro movements of the upper limb in fibromyalgia: The relation to proprioceptive accuracy and visual feedback. Journal of Electromyography & Kinesiology. vol. 26.
Bårdstu, Hilde; Ihlen, Espen Alexander F.; Bardal, Ellen Marie; Mork, Paul Jarle. (2016) Detection of physical activity types with accelerometers in adolescents in free-living settings. Gait & Posture. vol. 49.
Ihlen, Espen Alexander F.; Weiss, Aner; Beck, Yoav; Helbostad, Jorunn L.; Hausdorff, Jeffrey M.. (2016) A comparison study of local dynamic stability measures of daily life walking in older adult community-dwelling fallers and non-fallers. Journal of Biomechanics. vol. 49 (9).