2025

• Letnes, Jon Magne; Sellevold, Andreas Berg; Apelland, Turid; Brown, Fedelix Phetogo; Byrkjeland, Rune; Flasnes, Marius. (2025) Atrial fibrillation detection in endurance athletes vs. non-athletes: positive predictive value and burden estimation using insertable cardiac monitors. Heart Rhythm O2
  Academic article
• Schellenberg, Jana; Matits, Lynn; Kersten, Johannes; Bizjak, Daniel Alexander; Kirsten, Johannes; Fremo, Thomas. (2025) Physiological assessment of left ventricular size indexed by peak oxygen uptake across sporting disciplines. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
  Academic article
• Apelland, Turid; Letnes, Jon Magne; Janssens, Kristel; Claessen, Guido; Tveit, Arnljot; Sellevold, Andreas Berg. (2025) Arrhythmia burden, symptoms and quality of life in female and male endurance athletes with paroxysmal atrial fibrillation: a multicentre cohort study in Norway, Australia and Belgium. BMJ Open
  Academic article
• Nes, Bjarne Martens; Letnes, Jon Magne; Johnson, Kristin Espolin; Sellevold, Andreas Berg; Byrkjeland, Rune; Brown, Fedelix Phetogo. (2025) Effects of 1-year exercise in patients with atrial fibrillation: Study protocol for the Norwegian Exercise in Atrial Fibrillation (NEXAF) randomised controlled trial. Open heart
  Academic article
• Apelland, Turid; Sellevold, Andreas Berg; Letnes, Jon Magne; Onarheim, Sophia; Enger, Steve; Tveit, Arnljot. (2025) Cardiac arrhythmia assessment with patch electrocardiogram versus insertable cardiac monitor: a cohort study in endurance athletes with atrial fibrillation. BMJ Open
  Academic article
• Kersten, Johannes; Jeg, Achim; Persch, Hasema; Krieg, Sarah; Liu, Yuefei; Letnes, Jon Magne. (2025) Applications of Speckle Tracking Echocardiography in Stress Echocardiography: A Systematic Review on Feasibility, Diagnostic, and Clinical Utility. Echocardiography
  Academic article

2024

• Aabel, Eivind Westrum; Dodgson, Christopher Alexander Steele; Bakken, Frøydis Grøm; Letnes, Jon Magne; Magelssen, Malgorzata Izabela Szerypo; Moe, Espen Ellingsen. (2024) Spesialistutdanning av kardiologer i Norge - en spørreundersøkelse. Hjerteforum
  Academic article
• Dalen, Håvard; Letnes, Jon Magne; Høydal, Morten Andre; Wisløff, Ulrik. (2024) Diastolic function and dysfunction in athletes. European Heart Journal-Cardiovascular Imaging
  Academic literature review
• Letnes, Jon Magne; Nes, Bjarne Martens; Sandbakk, Øyvind Bucher; Tjønna, Arnt Erik; Fremo, Thomas; Moldjord, Christian. (2024) Comparison of resting heart rate and left ventricular ejection fraction in elite endurance athletes and the general population. European Journal of Preventive Cardiology (EJPC)
  Academic article
• Sæbø, Sigbjørn; Dalen, Håvard; Nyberg, John Anders Tomas; Grenne, Bjørnar Leangen; Jakobsen, Even Olav; Nes, Bjarne Martens. (2024) Left atrial to ventricular volume ratio and relation to fitness, cardiovascular risk factors, and diastolic function in healthy individuals: the HUNT Study. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
  Academic article

2023

• Letnes, Jon Magne; Wisløff, Ulrik; Dalen, Håvard. (2023) Heart Failure With Preserved Ejection Fraction: Exercise Deficiency or Ventricular Maladaptation to Metabolic Demands?. JACC Cardiovascular Imaging
  Reader opinion piece
• Sæbø, Sigbjørn; Nyberg, John Anders Tomas; Jakobsen, Even Olav; Nes, Bjarne Martens; Grenne, Bjørnar Leangen; Wisløff, Ulrik. (2023) The relation between left atrial and left ventricular size in a healthy population. European Heart Journal-Cardiovascular Imaging
  Abstract
• Myrstad, Marius; Apelland, Turid; Letnes, Jon Magne; Enger, Steve; Onarheim, Sophia; Sellevold, Andreas Berg. (2023) Temporal relationship between training and episodes of atrial fibrillation in endurance athletes. European Heart Journal, Supplement
  Abstract
• Smenes, Benedikte Therese; Letnes, Jon Magne; Nes, Bjarne Martens; Slagsvold, Katrine Hordnes; Wisløff, Ulrik; Wahba, Alexander. (2023) Cardiorespiratory fitness and the incidence of surgery for aortic valve stenosis-the HUNT study. European Journal of Cardio-Thoracic Surgery
  Academic article
• Johnson, Kristin Espolin; Sellevold, Andreas Berg; Rødal, Lasse; Loennechen, Jan Pål; Dalen, Håvard; Wisløff, Ulrik. (2023) Cardiorespiratory fitness in individuals with and without atrial fibrillation. European Journal of Preventive Cardiology (EJPC)
  Abstract
• Apelland, Turid; Janssens, Kristel; Loennechen, Jan Pål; Claessen, Guido; Sørensen, Eivind; Mitchell, Amy. (2023) Effects of training adaption in endurance athletes with atrial fibrillation: Protocol for a multicentre randomised controlled trial. BMJ Open sport & exercise medicine
  Article in business/trade/industry journal
• Eriksen-Volnes, Torfinn Kirknes; Grue, Jahn Frederik; Olaisen, Sindre Hellum; Letnes, Jon Magne; Nes, Bjarne Martens; Løvstakken, Lasse. (2023) Normalized Echocardiographic Values From Guideline-Directed Dedicated Views for Cardiac Dimensions and Left Ventricular Function. JACC Cardiovascular Imaging
  Academic article
• Letnes, Jon Magne; Nes, Bjarne Martens; Langlo, Knut Asbjørn Rise; Aksetøy, Inger-Lise Aamot; Lundgren, Kari Margrethe; Skovereng, Knut. (2023) Indexing cardiac volumes for peak oxygen uptake to improve differentiation of physiological and pathological remodeling: from elite athletes to heart failure patients. European Heart Journal-Cardiovascular Imaging
  Academic article
• Letnes, Jon Magne; Nes, Bjarne Martens; Wisløff, Ulrik. (2023) Age-related decline in peak oxygen uptake: Cross-sectional vs. longitudinal findings. A review. International Journal of Cardiology: Cardiovascular Risk and Prevention (IJCCRP)
  Academic literature review

2022

• Dalen, Håvard; Letnes, Jon Magne. (2022) Rethinking Left Atrial Enlargement: Identifying Individuals at Risk by Appropriate Scaling. JACC Cardiovascular Imaging
  Academic literature review
• Smenes, Benedikte Therese; Nes, Bjarne; Letnes, Jon Magne; Slagsvold, Katrine Hordnes; Wisløff, Ulrik; Wahba, Alexander. (2022) Cardiorespiratory fitness and the incidence of coronary surgery and postoperative mortality: the HUNT study. European Journal of Cardio-Thoracic Surgery
  Academic article

2021

• Letnes, Jon Magne; Nes, Bjarne. (2021) Don’t count the steps: make the steps count? Digging deeper into physical activity and fitness. European Heart Journal
  Editorial
• Letnes, Jon Magne; Berglund, Ida Johnsen; Johnson, Kristin Espolin; Dalen, Håvard; Nes, Bjarne; Lydersen, Stian. (2021) Effect of 5 years of exercise training on the cardiovascular risk profile of older adults: the Generation 100 randomized trial. European Heart Journal
  Academic article
• Letnes, Jon Magne; Eriksen-Volnes, Torfinn; Nes, Bjarne; Wisløff, Ulrik; Salvesen, Øyvind; Dalen, Håvard. (2021) Variability of echocardiographic measures of left ventricular diastolic function. The HUNT study. Echocardiography
  Academic article

2020

• Letnes, Jon Magne; Nes, Bjarne; Vaardal-Lunde, Kristina; Slette, Martine Bratt; Hansen, Harald Edvard Mølmen; Aspenes, Stian Thoresen. (2020) Left Atrial Volume, Cardiorespiratory Fitness, and Diastolic Function in Healthy Individuals: The HUNT Study, Norway. Journal of the American Heart Association (JAHA)
  Academic article
• Letnes, Jon Magne; Dalen, Håvard; Aspenes, Stian Thoresen; Salvesen, Øyvind; Wisløff, Ulrik; Nes, Bjarne. (2020) Age-related change in peak oxygen uptake and change of cardiovascular risk factors. The HUNT Study. Progress in cardiovascular diseases
  Academic article

2019

• Letnes, Jon Magne; Dalen, Håvard; Vesterbekkmo, Elisabeth Kleivhaug; Wisløff, Ulrik; Nes, Bjarne. (2019) Peak oxygen uptake and incident coronary heart disease in a healthy population: the HUNT Fitness Study. European Heart Journal
  Academic article

2016

• Letnes, Jon Magme; Torske, Magnhild Oust; Hilt, Bjørn; Bjørngaard, Johan Håkon; Krokstad, Steinar. (2016) Symptoms of depression and all-cause mortality in farmers, a cohort study: The HUNT study, Norway. BMJ Open
  Academic article