其他摘要：Many investigations have been made on the physical work capacity with respect to the respire-circulatory functions. It is no doubt that the total amount of hemoglobin (THb) is one of the most fundamental factors concerned with the aerobic work capacity. The THb was determined by applying the Alveolar Carbonmonoxide Method modified by Sjostrand (1948). The measurement of the Vo_2 max was made during exhaustive treadmill running, in which the speed was progressively increased. The endurance running time to exhaustion on a treadmill was measured. The results were as follows: 1) The average THb value of the athletes in male (827±111g) was significantly higher than that of the non-athletes (711±84g). 2) The average THb value of the athletes in female (632±29g) was significantly higher than that of the non-athletes (462±74g). 3) The THb per weight of athletes for men (14.2±1.5g/kg) was significantly higher than that of the non-athletes (11.6±1.1g/kg). 4) The THb per weight of athletes for women (10.9±0.1g/kg) was significantly higher than that of the non-athletes (8.3±0.3 g/ kg). 5) A correlation coefficient for the relation between the THb per weight and the endurance running time was found to be r=0.785 (p<0.001). 6) The THb was found to be highly correlated to the maximum cardiac output with a correlation coefficient of r = 0.711 (p<0.001). 7) The THb was significantly related to the maximum oxygen intake (r=0.895, p<0.001), the regression equation of the maximum oxygen intake (Y) on the THb (X) was Y = 0.005X - 0.447. From the present investigation the total amount of hemoglobin (THb) was found to be a fundamental factor concerned with maximum oxygen intake and an important factor contributing to the human aerobic work capacity.
