[DETERMINATION OF THE DURATION OF PHASES OF THE CARDIAC CYCLE IN ATHLETES DURING MUSCULAR WORK].
D056352:Athletes; D006321:Heart; D006334:Heart Function Tests; D006801:Humans; D005082:Physical Exertion; D013178:Sports Medicine
EXERTION; HEART FUNCTION TESTS; SPORT MEDICINE
ISSLEDOVANIE DLITEL'NOSTI FAZ SERDECHNOGO TSIKLA U SPORTSMENOV V USLOVIIAKH MYSHECHNO I RABOTY.