title: Heart of the athlete.
authors.affiliation: Sports Medicine Enterprise, Minneapolis, MN.
authors.forename: A J
authors.initials: AJ
authors.lastname: Ryan
mesh_terms: D006332:Cardiomegaly / Q000209:etiology / Q000266:history*; D015444:Exercise / Q000502:physiology; D006333:Heart Failure / Q000209:etiology; D049673:History, 20th Century; D006801:Humans; D010806:Physical Education and Training; D013177:Sports / Q000266:history*