A big boost for the value of interval training even in people already diagnosed with the heart ailment known as atrial fibrillation, which is a major risk factor for stroke and heart failure.

Conclusions—AIT for 12 weeks reduces the time in AF in patients with non-permanent AF. It is followed by a significant improvement in AF symptoms, VO2peak, left atrial and ventricular function, lipid levels, and QoL.

Source: Aerobic Interval Training Reduces the Burden of Atrial Fibrillation in the Short Term: A Randomized Trial