Exercise Cuts Atrial Fibrillation Recurrence Risk by 50 Percent After Ablation, Studies Show
Two new studies show that regular physical activity significantly reduces the chance of atrial fibrillation returning after catheter ablation. Patients who exercised at least 90 minutes per week were about 50% less likely to experience a recurrence, according to research published in 2026.
Regular exercise cuts the risk of atrial fibrillation returning after catheter ablation by roughly 50%, according to two studies published in 2026.
The first study, published in the Journal of Interventional Cardiac Electrophysiology, examined 163 adults who had undergone catheter ablation for AFib. Patients who did at least 90 minutes of moderate physical activity per week, such as brisk walking, cycling, or swimming, were about 50% less likely to have a recurrence compared to less active patients. Even 15 minutes of activity on most days showed benefits. The results held after adjusting for age, medication use, and heart structure.
The second study, the NEXAF trial, was presented at the European Society of Cardiology Congress in August 2026. It followed 295 participants with symptomatic, non-permanent AFib through a one-year tailored exercise program. The exercise group used a hybrid model of supervised high-intensity sessions and home-based workouts tracked by wearables. They experienced a 45% relative reduction in time spent in arrhythmia compared to a control group. Total hospitalizations dropped 37%, and AFib-related hospitalizations fell 46%.
Researchers say exercise helps stabilize heart rhythm by improving blood pressure, weight, sleep, and mood. Cardiorespiratory fitness and resting heart rates also improved in the exercise groups.
Clinicians caution that exercise should not replace medication. Patients are advised to consult their cardiologist before starting an exercise program, since some worry that physical activity could trigger an episode.
