Erythrocyte, Plasma and Blood Volume of Healthy Young Men: Relationships to Body Size and Aerobic Fitness

摘要

The primary pprpose of this study was to develop a nounative database for the erythrocyte volume, pla%na volume and blood volume of healthy young nen. The secondary purposes were to relate these vascular fluid volumes to the person's body size and physical fitness level and to develop regression equations which enable their accurate prediction. Fifty-one male soldiers with a inean age of 22 (range 18 to 35) years and with a maximal aerobic power of 53 ((range 42 to 65) ml 02kg -1.min-1) had their lean body mass and vascular fluid volumes measured. Erythrocyte volume was measured by 5ICr for all subjects; plasma volume was measured by 1251 for forty-three subjects and calculated (assumed F-cell of 0.89) from the erythrocyte volume and venous hematocrit for eight subjects. The findings concerning the erythrocyte volume, plasma volume and blood volume of young men are summarized as follows: (1) these vascular fluid volumes are accurately predicted from several indices of body size; (2) lean body mass is the anthropanetric ind% which is most closely correlated to these vascular fluid volumes; (3) aerobic fitness does not influence these vascular fluid volumes in individuals not recently participating in intense physical training; and (4) F-cell ratio is not related to aerobic fitness.