Severe aortic-valve stenosis unmasked by amateur running

Three men aged 35, 55, and 60 years had asymptomatic underlying aortic-valve stenosis unmasked by amateur running or jogging. All three men underwent aortic-valve replacement and two of the three have resumed mild exercise programs. Congenitally abnormal aortic valves were found in two of the three patients. Amateur exercise may uncover an underlying cardiovascular abnormality perhaps sooner than might be apparent without exercise.