A friend's son, 17 years old, and an outstanding athelete, complained about shortness of breath with extreme short exertion. He was first felt to have exercise induced asthma, but now after a series of tests including stress tests and echocardiograms was told that he had a thickened heart wall. During all the stress tests, the symptoms could not be induced. He has about one to two episodes per week of an irregular heart beat. The only known heart disease in his family is the death of his grandfather in his 60's of a MI. currently, he has been told to stop playing basketball and other sports. The question is, would cardiomyopathy present in this way and could the thickening in the heart wall be due to the extremely high intensity of his exercise program? Could you recommend cardiologists with expertise in atheletes who could be consulted? Thank you.