New Insights and Recommendations for Athletes With Hypertrophic Cardiomyopathy.

Hypertrophic cardiomyopathy (HCM) has long been considered to be a high-risk cardiac condition for which exercise was thought to increase the risk of sudden cardiac death (SCD). This was founded in part by initial autopsy studies reporting HCM to be a leading medical cause of SCD among young athletes. Most forms of competitive sport and exercise were therefore thought to increase the risk of SCD to a prohibitive level.