A Study on General Endurance and Cardiac Output

概要

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The respiratory circulation functions, oxygen intake, heart rate, cardiac output and stroke volume related to the general and running endurances were studied. The maximum cardiac output per minute was measured on the subjects at the rest state and at the loaded state with exercise by the CO_2 method. The following results were obtained: 1) The averaged values of cardiac output and cardiac index obtained for 7 healthy subjects studied were 3.742/min (S.D.=0.571/min) and 2.259/min/m^2(S.D.=0.298/min/m^2), respectively. 2) The value of cardiac output during exercise increased rapidly for first 2 minutes and reached almost steady state. 3) While the values of heart rate of each subject at all-out state were on about the same level (180-198/min), the values of cardiac output and stroke volumes increased in proportion to the all-out time. The linear correlation factores of cardiac output and stroke volume to the all-out time were γ=0.735 (0.001<P<0.01) and γ=0.873(P<0.001), respectively. It was concluded that regarding the cardiac activity, the endurance capacity has a closer relation to cardiac output and to stroke volume than to heart rate.
大阪府立大学の論文
1975-03-31