ABSTRACT
The present study was intended to determine max. Vo<SUB>2</SUB> and its relation to body weight of Japanese athletes. The subjects in this study were 151 male and female athletes who were Japanese excellent or good runners and swimmers.<BR>Max. Vo<SUB>2</SUB>2 was determined during the maximum running on the treadmill. Treadmill test was made with a constant slope of 8.6%. During the first 2 minutes, the treadmill was set in motion at a certain speed (180 or 200 m/min for male and 160 m/ min for female), and then the speed was increased by 10 m/min every succeeding minute until exhaustion. Expired air during running was collected in Douglas bag every 1 minute upto exhaustion. The sampling gas was analyzed by means of a Beckman oxygen and carbon dioxide analyzer.<BR>The results obtained in this study were as follows ;<BR>1) The regression equations were calculated between max. Vo<SUB>2</SUB> and body weight in relation to sex and sports (Table 1) .<BR>2) Max. Vo<SUB>2</SUB> per body weight of the male swimmers ranges from 50 to 70 and that of the male runners is 70 ml/kg/min. For the female swimmers max. Vo<SUB>2</SUB> is between 40 and 60 and the female runners approximately 60 ml/kg/min.<BR>3) The regression equation was calculated between the mean speed of 5000 m running as performance (Y) and max. Vo<SUB>2</SUB> per body weight as physical resources (X) for the runners.<BR>Y=0. 0431X+2.50±0.232