2025

• Arora, Nikhil; Brumpton, Ben Michael; Åsvold, Bjørn Olav; Loennechen, Jan Pål; Malmo, Vegard; Bhatta, Laxmi. (2025) A Mendelian randomization study investigating the role of sleep traits and their joint effects on the incidence of atrial fibrillation. European Journal of Preventive Cardiology (EJPC)
  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
• 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
• Hunt, Tove Elizabeth Frances; Traaen, Gunn Marit; Aakerøy, Lars; Øverland, Britt; Bendz, Christina; Michelsen, Annika Elisabet. (2025) Systemic markers of inflammation and immune activation in patients with obstructive sleep apnea and paroxysmal atrial fibrillation. European journal of internal medicine
  Academic article
• Solberg, Erik Ekker; Ingul, Charlotte Ingeborg Björk; Edvardsen, Thor; Grimsmo, Jostein; Haugaa, Kristina Ingrid Helena Hermann; Loennechen, Jan Pål. (2025) Målrettet hjertescreening av idrettsutøvere. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Feature 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

2024

• Drca, Nikola; Malmo, Vegard; Loennechen, Jan Pål; Janszky, Imre; Horn, Jens Wilhelm. (2024) Gastroesophageal reflux disease symptoms and risk of atrial fibrillation in a population-based cohort study (the HUNT study). PLOS ONE
  Academic article
• Morooka, Hikaru; Haug, Eirin Beate; Malmo, Vegard; Loennechen, Jan Pål; Mukamal, Kenneth J.; Sen, Abhijit. (2024) Parity, infertility, age at first birth, and risk of atrial fibrillation: data from the HUNT study. European Journal of Preventive Cardiology (EJPC)
  Academic article
• Aakerøy, Rachel; Loennechen, Jan Pål; Dyrkorn, Roar; Lydersen, Stian; Helland, Arne; Spigset, Olav. (2024) Apixaban plasma concentrations before and after catheter ablation for atrial fibrillation. PLOS ONE
  Academic article
• Gémes, Katalin; Malmo, Vegard; Strand, Linn B; Ellekjær, Hanne; Loennechen, Jan Pål; Janszky, Imre. (2024) Insomnia symptoms and risk for atrial fibrillation – The HUNT study. Journal of Sleep Research
  Academic article
• Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Loennechen, Jan Pål; Olsen, Alexander. (2024) Migraine and risk of atrial fibrillation: A 9-year follow-up based on the Trøndelag Health Study. Cephalalgia
  Academic article
• Morooka, Hikaru; Haug, Eirin Beate; Malmo, Vegard; Loennechen, Jan Pål; Mukamal, Kenneth J.; Rich-Edwards, Janet Wilson. (2024) Association of age at menarche, reproductive lifespan and age at menopause with the risk of atrial fibrillation: The HUNT study. Maturitas
  Academic article
• Hunt, Tove Elizabeth Frances; Traaen, Gunn Marit; Aakerøy, Lars; Massey, Richard; Bendz, Christina; Øverland, Britt. (2024) Cardiac remodelling in patients with atrial fibrillation and obstructive sleep apnoea. Open heart
  Academic article

2023

• 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
• Nyman, Mathias; Stølen, Tomas; Johnsen, Anne Berit; Garten, Karin; Burton, Francis; Smith, Godfrey L. (2023) A comprehensive protocol combining in vivo and ex vivo electrophysiological experiments in an arrhythmogenic animal model. American Journal of Physiology. Heart and Circulatory Physiology
  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
• Norvik, Anders; Kvaløy, Jan Terje; Skjeflo, Gunnar Waage; Bergum, Daniel; Nordseth, Trond; Loennechen, Jan Pål. (2023) Heart rate and QRS duration as biomarkers predict the immediate outcome from pulseless electrical activity. Resuscitation
  Academic article
• Kristiansen, Stein; Nikolaidis, Konstantinos; Plagemann, Thomas Peter; Goebel, Vera Hermine; Traaen, Gunn Marit; Øverland, Britt. (2023) A clinical evaluation of a low-cost strain gauge respiration belt and machine learning to detect sleep apnea. Smart Health
  Academic article

2022

• Traaen, Gunn Marit; Akre, Harriet; Loennechen, Jan Pål; Gullestad, Lars. (2022) Reply to Lalonde et al. American Journal of Respiratory and Critical Care Medicine
  Letter to the editor
• Hunt, Tove Elizabeth Frances; Traaen, Gunn Marit; Aakerøy, Lars; Bendz, Christina; Øverland, Britt; Akre, Harriet. (2022) Effect of continuous positive airway pressure therapy on recurrence of atrial fibrillation after pulmonary vein isolation in patients with obstructive sleep apnea: A randomized controlled trial. Heart Rhythm
  Academic article

2021

• Kristiansen, Stein; Nikolaidis, Konstantinos; Plagemann, Thomas Peter; Goebel, Vera Hermine; Traaen, Gunn Marit; Øverland, Britt. (2021) Machine learning for sleep apnea detection with unattended sleep monitoring at home. ACM Transactions on Computing for Healthcare (HEALTH)
  Academic article
• Traaen, Gunn Marit; Aakerøy, Lars; Hunt, Tove Elizabeth Frances; Øverland, Britt; Bendz, Christina; Sande, Lars Øivind. (2021) Effect of continuous positive airway pressure on arrhythmia in atrial fibrillation and sleep apnea a randomized controlled trial. American Journal of Respiratory and Critical Care Medicine
  Academic article
• Miguel dos Santos, Rodrigo ; Moreira, Jose Bianco Nascimento; Loennechen, Jan Pål; Wisløff, Ulrik; Mesquita, Thássio Ricardo Ribeiro. (2021) Exercising immune cells: The immunomodulatory role of exercise on atrial fibrillation. Progress in cardiovascular diseases
  Academic literature review

2020

• Kristiansen, Stein; Traaen, Gunn Marit; Øverland, Britt; Plagemann, Thomas Peter; Gullestad, Lars; Akre, Harriet. (2020) Comparing manual and automatic scoring of sleep monitoring data from portable polygraphy. Journal of Sleep Research
  Academic article
• Aas, Torgeir Sand; Loennechen, Jan Pål; Salvesen, Øyvind; Midgard, Rune. (2020) No Association between Stroke and Left Atrial Fibrosis estimated with integrated backscatter. Journal of Cardiology & Clinical Research
  Academic article
• Nyman, Fred Mathias; Molaug, Ina Charlotte; Næss, Anne Marte; Espeland, Torvald; Loennechen, Jan Pål; Mjølstad, Ole Christian. (2020) Implantasjon av hjertestartere ved St. Olavs hospital 2006–15. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Garnvik, Lars Berton Elnan; Malmo, Vegard; Janszky, Imre; Ellekjær, Hanne; Wisløff, Ulrik; Loennechen, Jan Pål. (2020) Physical activity, cardiorespiratory fitness, and cardiovascular outcomes in individuals with atrial fibrillation: The HUNT Study. European Heart Journal
  Academic article
• Stensvold, Dorthe; Viken, Hallgeir; Steinshamn, Sigurd Loe; Dalen, Håvard; Støylen, Asbjørn; Loennechen, Jan Pål. (2020) Effect of exercise training for five years on all cause mortality in older adults-The Generation 100 study: Randomised controlled trial. The BMJ
  Academic article

2019

• Traaen, Gunn Marit; Øverland, Britt; Aakerøy, Lars; Hunt, Tove Elizabeth Frances; Bendz, Christina; Leif Magne, Sande. (2019) Prevalence, risk factors, and type of sleep apnea in patients with paroxysmal atrial fibrillation. International journal of cardiology: Heart and Vasculature (IJCHA)
  Academic article
• Skjeflo, Gunnar Waage; Skogvoll, Eirik; Loennechen, Jan Pål; Olasveengen, Theresa M.; Wik, Lars; Nordseth, Trond. (2019) The effect of intravenous adrenaline on electrocardiographic changes during resuscitation in patients with initial pulseless electrical activity in out of hospital cardiac arrest. Resuscitation
  Academic article
• Feng, Tingting; Malmo, Vegard; Laugsand, Lars Erik; Strand, Linn B; Gustad, Lise; Ellekjær, Hanne. (2019) Symptoms of anxiety and depression and risk of atrial fibrillation-the HUNT study. International Journal of Cardiology
  Academic article
• Garnvik, Lars Elnan; Malmo, Vegard; Janszky, Imre; Wisløff, Ulrik; Loennechen, Jan Pål; Nes, Bjarne. (2019) Estimated cardiorespiratory fitness and risk of atrial fibrillation: The Nord-Trøndelag Health Study. Medicine & Science in Sports & Exercise
  Academic article
• Myrstad, Marius; Malmo, Vegard; Ulimoen, Sara Reinvik; Tveit, Arnljot; Loennechen, Jan Pål. (2019) Exercise in individuals with atrial fibrillation. Clinical Research in Cardiology
  Academic literature review
• Feng, Tingting; Malmo, Vegard; Strand, Linn B; Laugsand, Lars Erik; Mørkedal, Bjørn; Aune, Dagfinn. (2019) Metabolically Healthy Obesity and Risk for Atrial Fibrillation: The HUNT Study. Obesity
  Academic article
• Feng, Tingting; Malmo, Vegard; Strand, Linn B; Laugsand, Lars Erik; Mørkedal, Bjørn; Aune, Dagfinn. (2019) Weight and weight change and risk of atrial fibrillation: the HUNT study. European Heart Journal
  Academic article

2018

• Traaen, Gunn Marit; Aakerøy, Lars; Hunt, Tove Elisabeth F.; Øverland, Britt; Lyseggen, Erik; Aukrust, Pål. (2018) Treatment of sleep apnea in patients with paroxysmal atrial fibrillation: design and rationale of a randomized controlled trial. Scandinavian Cardiovascular Journal
  Academic article
• Jacobsen, Geir Wenberg; Titova, Elena; Loennechen, Jan Pål; Berntsen, Erik Magnus. (2018) Suppe til besvær. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Skjeflo, Gunnar Waage; Nordseth, Trond; Loennechen, Jan Pål; Bergum, Daniel; Skogvoll, Eirik. (2018) ECG changes during resuscitation of patients with initial pulseless electrical activity are associated with return of spontaneous circulation. Resuscitation
  Academic article
• Cepelis, Aivaras; Brumpton, Ben Michael; Malmo, Vegard; Laugsand, Lars Erik; Loennechen, Jan Pål; Ellekjær, Hanne. (2018) Associations of asthma and asthma control with atrial fibrillation risk: Results from the Nord-Trøndelag health study (HUNT). JAMA cardiology
  Academic article
• Malmo, Vegard; Kelly, Allen; Garten, Karin; Stølen, Tomas; Rolim, Natale Pinheiro Lage; Wisløff, Ulrik. (2018) Aerobic interval training prevents age-dependent vulnerability to atrial fibrillation in Rodents. Frontiers in Physiology
  Academic article
• Garnvik, Lars Elnan; Malmo, Vegard; Janszky, Imre; Wisløff, Ulrik; Loennechen, Jan Pål; Nes, Bjarne. (2018) Physical activity modifies the risk of atrial fibrillation in obese individuals: The HUNT3 study. European Journal of Preventive Cardiology (EJPC)
  Academic article

2017

• Silli, Ingvild Kiil; Loennechen, Jan Pål; Gjeilo, Kari Hanne. (2017) Vascular complications after catheter based ablation of cardiac arrhythmias. European Journal of Cardiovascular Nursing
  Abstract
• Gemes, Katalin; Malmo, Vegard; Laugsand, Lars Erik; Loennechen, Jan Pål; Ellekjær, Hanne; Lszl, Krisztina D. (2017) Does moderate drinking increase the risk of atrial fibrillation? The norwegian HUNT (Nord-Trøndelag Health) study. Journal of the American Heart Association (JAHA)
  Academic article

2016

• Zeinali, Fatemeh; Bakkelund, Karin Elvenes; Hauso, Øyvind; Loennechen, Jan Pål; Waldum, Helge. (2016) Assessment of radiofrequency ablation technique in development of aortic valve stenosis in rabbits. Scandinavian Journal of Laboratory Animal Science
  Academic article
• Malmo, Vegard; Langhammer, Arnulf; Bønaa, Kaare; Loennechen, Jan Pål; Ellekjær, Hanne. (2016) Validation of self-reported and hospital-diagnosed atrial fibrillation: The HUNT study. Clinical Epidemiology
  Academic article
• Malmo, Vegard; Nes, Bjarne; Amundsen, Brage H.; Tjønna, Arnt Erik; Støylen, Asbjørn; Rossvoll, Ole. (2016) Aerobic interval training reduces the burden of Atrial fibrillation in the short term: A randomized trial. Circulation
  Academic article
• Bergum, Daniel; Skjeflo, Gunnar Waage; Nordseth, Trond; Mjølstad, Ole Christian; Haugen, Bjørn Olav; Skogvoll, Eirik. (2016) ECG patterns in early pulseless electrical activity-Associations with aetiology and survival of in-hospital cardiac arrest. Resuscitation
  Academic article

2015

• Rolim, Natale Pinheiro Lage; Skårdal, Kristine; Høydal, Morten; Sousa, Mirta; Malmo, Vegard; Skrove, Guri Kaurstad. (2015) Aerobic interval training reduces inducible ventricular arrhytmias in diabetic mice after myocardial infarction. Basic Research in Cardiology
  Academic article

2013

• Loennechen, Jan Pål. (2013) Komplikasjoner til kateterbasert ablasjon av atrieflimmer. Hjerteforum
  Academic literature review

2012

• Rice, Eva; Loennechen, Jan Pål; Vegsundvåg, Johnny Åge; Leren, Trond Paul; Hole, Torstein. (2012) Brugada syndrome: A new mutation found in Norway. Open Journal of Internal Medicine
  Academic article

2010

• Nordseth, Trond; Olasveengen, Theresa Mariero; Loennechen, Jan Pål; Wik, Lars; Steen, Petter Andreas; Skogvoll, Eirik. (2010) Dynamic development of pulseless electrical activity in out-of-hospital cardiac arrest. Resuscitation
  Abstract
• Vanke, Petter; Nordseth, Trond; Loennechen, Jan Pål; Mostad, Dagmar Heinke; Skjærpe, Terje; Sellevold, Olav F Münter. (2010) Ung kvinne med hjertestans. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Haugaa, Kristina Hermann; Leren, Ida Skrinde; Berge, Knut Erik; Bathen, Jørn; Loennechen, Jan Pål; Anfinsen, Ole-Gunnar. (2010) High prevalence of exercise-induced arrhythmias in catecholaminergic polymorphic ventricular tachycardia mutation-positive family members diagnosed by cascade genetic screening. Europace
  Academic article
• Haugaa, Kristina Hermann; Smedsrud, Marit Kristine; Steen, Torkel; Kongsgård, Erik; Loennechen, Jan Pål; Skjærpe, Terje. (2010) Mechanical Dispersion Assessed by Myocardial Strain in Patients After Myocardial Infarction for Risk Prediction of Ventricular Arrhythmia. Journal of the American College of Cardiology
  Academic article
• Leren, Ida Skrinde; Haugaa, Kristina; Berge, Knut Erik; Bathen, Jørn; Loennechen, Jan Pål; Anfinsen, Ole-Gunnar. (2010) Exercise-induced ventricular arrhythmias in CPVT patients occur at lower heart rate on beta-blocker therapy. European Heart Journal
  Abstract

2009

• Tjønna, Arnt Erik; Rognmo, Øivind; Stølen, Tomas; Bye, Anja; Haram, Per Magnus; Loennechen, Jan Pål. (2009) Response to Letter Regarding Article, "Aerobic Interval Training Versus Continuous Moderate Exercise as a Treatment for the Metabolic Syndrome: A Pilot Study". Circulation
  Reader opinion piece
• Beisvag, Vidar; Kemi, Ole Johan; Arbo, Ingerid Brænne; Loennechen, Jan Pål; Sandvik, Arne Kristian; Langaas, Mette. (2009) Pathological and physiological hypertrophies are regulated by distinct gene programs. European Journal of Cardiovascular Prevention & Rehabilitation
  Academic article

2008

• Schjerve, Inga Ekeberg; Tyldum, Gjertrud Aunet; Tjønna, Arnt Erik; Stølen, Tomas; Loennechen, Jan Pål; Mølmen Hansen, Harald Edvard. (2008) Both aerobic endurance and strength training programs improve cardiovascular health in obese adults. Clinical Science
  Academic article
• Tjønna, Arnt Erik; Lee, Sang Jun; Rognmo, Øivind; Stølen, Tomas; Bye, Anja; Haram, Per Magnus. (2008) Aerobic Interval Training Versus Continuous Moderate Exercise as a Treatment for the Metabolic Syndrome A Pilot Study. Circulation
  Academic article

2007

• Tjønna, Arnt Erik; Bye, Anja; Haram, Per Magnus; Loennechen, Jan Pål; Rognmo, Øivind; Slørdahl, Stig Arild. (2007) Superior cardiovascular effect of interval training versus moderate exercise in patients with the metabolic syndrome. Medicine & Science in Sports & Exercise
  Abstract
• Hauso, Øyvind; Gustafsson, Bjørn; Loennechen, Jan Pål; Stunes, Astrid Kamilla; Nordrum, Ivar Skjåk; Waldum, Helge. (2007) Long-term serotonin effects in the rat are prevented by terguride. Regulatory Peptides
  Academic article
• Wisløff, Ulrik; Støylen, Asbjørn; Loennechen, Jan Pål; Bruvold, Morten; Rognmo, Øivind; Haram, Per Magnus. (2007) Superior cardiovascular effect of aerobic interval training versus moderate continuous training in heart failure patients - A randomized study. Circulation
  Academic article

2006

• Tjønna, Arnt Erik; Rognmo, Øivind; Stølen, Tomas; Bye, Anja; Loennechen, Jan Pål; Slørdahl, Stig Arild. (2006) Endothelial function in individuals with Metabolic Syndrome: effects of acute and chronic aerobic exercise. European Journal of Cardiovascular Prevention & Rehabilitation
  Abstract
• Tjønna, Arnt Erik; Rognmo, Øivind; Haram, Per Magnus; Stølen, Tomas; Loennechen, Jan Pål; Slørdahl, Stig Arild. (2006) Reversing Metabolic Syndrome with High Intensity Training. European Journal of Cardiovascular Prevention & Rehabilitation
  Abstract
• Kemi, Ole Johan; Arbo, Ingerid; Høydal, Morten Andre; Loennechen, Jan Pål; Wisløff, Ulrik; Smith, G. (2006) Reduced pH and contractility in failing rat cardiomyocytes. Acta Physiologica
  Academic article

2005

• Kemi, Ole Johan; Haram, Per Magnus; Loennechen, Jan Pål; Osnes, Jan-Bjørn; Wisloff, U; Skomedal, Tor. (2005) Moderate vs. high exercise intensity: Differential effects on aerobic fitness, cardiomyocyte contractility, and endothelial function. Cardiovascular Research (CVR)
  Academic article
• Gustafsson, Bjørn; Tømmerås, Karin; Nordrum, Ivar Skjåk; Loennechen, Jan Pål; Brunsvik, Anders; Solligård, Erik. (2005) Long-term serotonin administration induces heart valve disease in rats. Circulation
  Academic article

2004

• Wisløff, Ulrik; Loennechen, Jan Pål; Ellingsen, Øyvind. (2004) Exercise and the Cardiac Myocyte. Human Kinetics
  Academic chapter/article/Conference paper

2003

• Beisvåg, Vidar; Falck, G; Loennechen, Jan P.; Qvigstad, Gunnar; Jynge, Per; Skomedal, Tor. (2003) Identification and regulation of the gastric H+/K+-ATPase in the rat heart. Acta Physiologica Scandinavica
  Academic article

1999

• Loennechen, Jan P.; Beisvag, Vidar; Arbo, Ingerid; Waldum, Helge L.; Sandvik, Arne K.; Knardahl, Stein. (1999) Chronic monoxide exposure in vivo induces myocardial endothelin-1 expression and hyperthrophy in rat. Pharmacology and Toxicology
  Academic article