Exercise proven to help patients post-MI

Difference between disability and normal activity

Exercise appears to benefit post-myocardial infarction (MI) patients, whereas it was thought to cause more damage than good in the past. Experts think the degree of improvement following exercise may make the difference between a person being disabled and being well enough to return to normal activities.

A team used magnetic resonance imaging (MRI) to assess exercise’s effect on male post-MI patients with reduced left ventricular function. They found a 26% increase in oxidative capacity and a significant delay in lactate threshold relative to unexercised patients. Investigators attribute the revised finding to the use of MRI.