2025

• Norvik, Anders; Unneland, Eirik; Bergum, Daniel; Loennechen, Jan Pål; Kvaløy, Jan Terje; Aramendi, E.. (2025) Adrenaline and return of spontaneous circulation during in-hospital cardiac arrest. Resuscitation Plus
  Academic article
• Ueland, Thor; Traaen, Gunn Marit; Hunt, Tove Elizabeth Frances; Aakerøy, Lars; Øverland, Britt; Bendz, Christina. (2025) High levels of the adipokines leptin and metrnl in patients with paroxysmal atrial fibrillation and obstructive sleep apnea are not associated with the severity of sleep apnea or the burden of atrial fibrillation. Sleep Medicine
  Academic article
• 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
• Morooka, Hikaru; Haug, Eirin Beate; Malmo, Vegard; Loennechen, Jan Pål; Ellekjær, Hanne; Sen, Abhijit. (2025) Adverse pregnancy outcomes and risk of atrial fibrillation: findings from the HUNT study. European Journal of Preventive Cardiology (EJPC)
  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
• 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
• 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.
  Other
• 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
• Solberg, Erik Ekker; Ingul, Charlotte Ingeborg Björk; Edvardsen, Thor; Grimsmo, Jostein; Haugaa, Kristina Ingrid Helena Hermann; Loennechen, Jan Pål. (2025) Målrettet hjertescreening av idrettsutøvere.
  Feature article

2024

• 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
• 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
• 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
• 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
• 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
• 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
• 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

• 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
• 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
• 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

• 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
• Traaen, Gunn Marit; Akre, Harriet; Loennechen, Jan Pål; Gullestad, Lars. (2022) Reply to Lalonde et al. American Journal of Respiratory and Critical Care Medicine
  Reader opinion piece

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
• Santos, Rodrigo Miguel dos; 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
• 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
• 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

2019

• 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
• 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
• Traaen, Gunn Marit; Øverland, Britt; Aakerøy, Lars; Hunt, Tove Elizabeth Frances; Bendz, Christina; Magne, Sande Leif. (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
• 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
• 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
• 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
• 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

2018

• Jacobsen, Geir Wenberg; Titova, Elena; Loennechen, Jan Pål; Berntsen, Erik Magnus. (2018) Suppe til besvær. Tidsskrift for Den norske legeforening (Tidsskriftet)
  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
• 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
• 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
• 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

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; 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
• 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
• 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

• 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; 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
• 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
• 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
• 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

2009

• 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
• 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

2008

• 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
• Schjerve, Inga Ekeberg; Tyldum, Gjertrud Aunet; Tjønna, Arnt Erik; Stølen, Tomas; Loennechen, Jan Pål; Hansen, Harald Edvard Mølmen. (2008) Both aerobic endurance and strength training programs improve cardiovascular health in obese adults. Clinical Science
  Academic article

2007

• 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
• 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

2006

• 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
• 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

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.
  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