Sudden Death: Myocardial Infarction in a Runner With Normal Coronary Arteries.

In brief: Sudden death during or following exercise is a dramatic event. In people over 40 years of age, coronary artery disease Is implicated in nearly 90% of exercise-related deaths. For those under 30 years of age, hypertrophic cardiomyopathy, abnormal coronary arteries, and coronary artery disease are the largest contributors.