Muscle Tissue (IMAGE) Rensselaer Polytechnic Institute Caption Research on three mutations associated with hypertrophic cardiomyopathy -- a disease best known for revealing itself as an unexpected, fatal heart attack during strenuous exercise -- found separate mechanisms at work at the molecular level. Credit Rensselaer Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.