[Heart size and physical efficiency in athletes during the course of varying training loads].
D056352:Athletes; D002318:Cardiovascular Diseases; D004526:Efficiency; D006334:Heart Function Tests; D006801:Humans; D010808:Physical Examination; D005082:Physical Exertion; D010809:Physical Fitness; D013178:Sports Medicine
CARDIOVASCULAR DISEASES; EXERTION; HEART FUNCTION TESTS; PHYSICAL FITNESS; SPORT MEDICINE