複合種目連続トレーニングが長時間運動時の呼吸循環応答に及ぼす影響

To identify the physiological effects on cardiorespiratory responses during prolonged exercise of continuous training，eight male and two female college students participated in the training study. The training intensity and period were 60% VO2max during cycling and running，and 3 days per week for 4 weeks. Subjects were divided into the continuous training group and separated training group according to their V02max. The continuous training consisted of cycling for 30 min and running for 30 min as a continuous task. The separated training consisted of these exercises as a separated task. The maximal exercise tests，and the prolonged exercise tests were conducted at pre-and post-training. The latter test consisted of 45-min ergometer cycling and 45-min treamill running at 60%VO2max as a continuous task. At post-training，the increments of V02，VE and HR were tended to be small in both groups during the prolonged exercise test. But，there were some differences in these increment demands between continuous and separated groups : in the continuous training group，significant small increments were observed from earlier stage than those in the separated training group. At post-training， the change ratios of V02，VE and HR at running stage in the continuous training group were significantly smaller than those in the separated training group. No significant increment of VO2max was observed in both groups. These results indicated that continuous training was more useful for improving the degree of cardiorespiratory drift such as progressive increments of V02，VE or HR during the prolonged exercis. Therefore，triathletes and/or duathletes were recommended to train themselves as a continuous task rather than as a separated task.