Fitness and the Development of Atrial Fibrillation
The beneficial effect of exercise on most aspects of cardiovascular disease is well established with a salutary effect on the incidence of coronary artery disease (CAD), congestive heart failure and premature death in those that participate in regular physical activity.1,2 This effect becomes apparent with moderate increases in activity without a defined upper limit of toxicity. For cardiac arrhythmias, and atrial fibrillation (AF) in particular, the story appears more complex. In fact, there have only been limited studies published on the beneficial effect of physical activity on AF, while a number of case-control studies have emphasized the deleterious effect of exercise when performed at sustained high levels.3,4
- Received April 15, 2015.
- Accepted April 17, 2015.