ウォーミングアップ強度が高強度運動のパフォーマンスと酸素摂取動態, 筋活動へ及ぼす影響

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It is not clear what intensity of W-up is required for W-up to be effective for enhancement of exercise performance, and the physiological effects of W-up on exercise performance have not been fully elucidated. In this study, the effects of W-up at various intensities on exercise performance were examined to determine the optimal W-up intensity for enhancement of exercise performance. Seven male subjects (age, 21.1±1.8 years; height, 169.1±5.8 cm; weight, 58.0±5.2 kg) participated in this study. The subjects each performed cycling exercises for 15 minutes W-up at the following three intensities : lactate threshold (LT), 50% of LT (50 %LT) and onset of blood lactate accumulation (OBLA). The exercise test involved exercise at 100% peak oxygen uptake (VO_2) value and was started 5min after W-up had finished and continued until exhaustion. It was found that the period of continuous exercise after W-up at 50 %LT (175.1±51.0 sec) was significantly shorter than that after W-up at LT (248.7±61.6 sec, p<0.05), but there was no significant difference between after W-up at LT and OBLA (204.9±55.9 sec) or between after other W-ups. Measurements of vastus lateralis temperature (50 %LT<LT=OBLA, p<0.05) and rectal temperature (50 %LT<LT<OBLA, p<0.01) suggested that W-up at 50 %LT is not sufficient for increasing body temperature. The muscle oxygenation status also differed depending on the intensity of W-up, and the magnitude of increase in VO_2 in the early period of exercise test after W-up at 50 %LT was less than that after other W-ups. The results of electromyography suggested muscle fatigue after W-up at OBLA. These results suggest that 50 %LT is too low and that OBLA is too high for intensity of W-up.
日本運動生理学会の論文
2005-09-30

ウォーミングアップ強度が高強度運動のパフォーマンスと酸素摂取動態, 筋活動へ及ぼす影響

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