<研究論文>低圧環境下における血中乳酸濃度4mMレベルを指標とした持久的トレーニング負荷強度についての検討

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The present study is aimed at demonstrating the evaluation of endurance training intensity based on the 4mM level determined by blood lactate concentration in a hypobaric environment. The hypobaric chamber was used for experiments at sea level and at 2,000m simulated altitude. Two male long-distance runners performed both the incremental exercise test and the submaximal exercise test at both sea level and at 2,000m simulated altitude. Treadmill speed corresponding to 4mM level during the incremental exercise test at sea level was greater than that during the submaximal exercise test. This result was the same when both tests were performed at 2,000m simulated altitude. Using the speeds to perform the endurance exercise test at sea level, blood lactate concentration closely matched the predicted value (4mmol/l) in the submaximal exercise test. However, blood lactate concentration was higher than the predicted value in the incremental exercise test at sea level, and in both tests at 2,000m simulated altitude. The results suggest that the intensity of endurance exercise obtained in a hypobaric environment tended to be overestimated when determined through the incremental exercise test. It is thought that a more effective evaluation of endurance training intensity would be provide by conducting the submaximal exercise test in a hypobaric environment, with an exercise time of more than 10minutes.
東海大学の論文