Atrial fibrillation and physical activity.

Habitual physical activity improves cardiovascular health but there is a higher risk of atrial fibrillation (AF) in endurance athletes. The physiological processes underlying this observation are not fully understood, but adaptations to exercise, such as bradycardia and atrial dilatation, may contribute to arrhythmia susceptibility. Further data on long-term implications and individualised management strategies in athletes with AF are required.