摘要：Matthews EL, McConnell TR, Rawson ES, Andreacci JL. Cardiac Output Dependency on Exercising Muscle Mass. The purpose of this study was to determine the relationship between cardiac output (CO) and muscle mass engaged during submaximal steady-state exercise. JEPonline 2012;15(5):88-95. Fifteen young adult males participated in leg and arm ergometry with CO measured throughout incremental workloads. No significant difference exists for COabs (L·min-1 ) during leg ergometry between larger (14.34±4.93) and smaller (12.68±4.47) leg musculatures (P=0.067). During arm exercise, COabs was greater in participants with larger (20.25±9.60) versus smaller (13.73±4.89) arm musculatures (P<0.01). During both exercise modalities, no difference exists between the subjects with larger and smaller musculatures for COrel (ml·kg-1 ·min-1 ). We conclude that differences exist in the CO response to matched submaximal exercise between larger and smaller muscle mass.
