Abstract
The author investigated the difference in the metabolic function of the corpulent and slender persons under the exercise of stepping up and down, under which the largest difference would be demonstrated by both of the persons when they are under an equal exercise. The followings are the brief outline of the results thus obtained.
(1) No difference was noted in the oxygen requirement per unit body weight, consequently in the working efficiency, when corpulent and slender persons were under an equal exercise of stepping up and down. However, the oxygen requirement per unit body surface area and the relative metabolic rate (R. M. R.) of the former was found clearly higher compared with that of the latter.
(2) The relative metabolic rate under the exercise of steff ing up and down possesses no universal validity because the body weight of each individual acts as the burdening weight. Nevertheless, it is considered to be an adequate index of the work intensity indicating the work stress of each individual.
(3) when the corpulent and slender persons are under an equal exercise of stepping up and down, the former demonstrated clearly a larger oxygen debt and an extremely delayed process of recovery compared with those of the latter.
(4) Almost no difference was noted in the respiration quotient of the rest and work metabolism between the corpulent and slender persons.
