其他摘要：Metabolic responses during submaximum and maximum treadmill running were measured for seven excellent middle-long distance runners, aged 14 to 15 years. Oxygen intake, heart rates and respiratory rates were recorded during exercise and recovery phase. The maximum oxygen intake was measured by the speed progressive treadmill running test (8.6%slope). In the case of submaximum test, the subjects ran on the horizontal treadmill at a constant speed of 300m/min for 6'40". This speed was determined with their best records of 2000m running. The results obtained in this study were as follows: 1. The mean value of the maximum oxygen intake of seven subjects was 3.29l/min(2.49-3.631/min) and the mean value of the maximum oxygen intake per body weight was 60.8 ml/kg/min (57.2-69.0 ml/kg-min). This value is 30% more than that of Japanese ordinary adolescents of the same age, and it corresponds to 72% of Japanese top long-distance runners. 2. The mean value of the maximum ventilation was 111.0l/min (87.8-119.9l/min). When compared with college long-distance runners, these subjects demonstrated large ventilation relating to their maximum oxygen intake. 3. The mean values of oxygen pulse was 16.6ml/beat (12.8-17.9ml/beat) and tidal volume was 1.8l/freq. (1.4-2.2l/freq.) when maximum oxygen intake was obtained. 4. During 2000m treadmill running, oxygen was continuously consumed more than 80% of their maximum for the last four minutes. 5. The oxygen debt of the three subjects for the exhaustive exercise ware 7.04 l, 5.68l, and 4.65l, respectively.
