Table 1

Incidence and prevalence of atrial fibrillation (AF) in endurance athletes

AuthorType of studyNo of athletesNo of controlsStatistical variable of interestStatistical results
Mont et al2Subgroup analysis of lone AF populationIndividuals involved in sport practiceIndividuals without prior history of endurance exercisePercentage of sportsmen vs non-sportsmen among patients with lone AF63% sportsmen versus 15% general population (p = 0.05)
Elosua et al3Retrospective case control58 endurance athletes51 sedentary controlsIncidence of AF in endurance athletes versus controlsOR 2.87; CI 1.39 to 7.05; p<0.05
Molina et al4Retrospective cohort study252 marathon runners305 sedentary controlsIncidence of AF in marathon runners versus controlsHeart rate = 8.80; 95% CI 1.26 to 61.29; p = 0.05
Karjalainen et al5Nested case control300 orienteers495 healthy, non- exercising(1) RR of AF in orienteers; (2) incidence of AF in cases versus controls(1) RR = 5.5 p = 0.05; (2) 5.3% versus 0.9%; p = 0.05
Baldersberger and Attenhofer32Longitudinal case control134 cyclists62 controlsPercentage of AF among cyclists versus sedentary controls10% cyclists versus 0% controls; p = 0.05
GIRAFA Study33Prospective case control107 physically active adults107 sedentary subjectsIncidence of AF in physically active versus sedentary subjectsOR 7.31 CI 2.33 to 22.9; p<0.05
  • CI, confidence interval; OR, odds ratio; RR, relative risk.