水中トレッドミルを用いた水中歩行・走行の生理学的応答

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The aim of this study was to clarify the physiological characteristics of the underwater treadmill at varied treadmill speeds to compare to the land treadmill with the focus especially on the middle-aged people. Seven healthy middle-aged volunteers and ten regularly trained athletes participated in this study as the subjects. The treadmill speeds were set at six speeds ranging from 2 km・h^<-1> to 12 km・h^<-1>. The water depth was around waist-high and water temperature was kept around 29℃ throughout the experiments. VO_2 did not significantly differ between the underwater treadmill trails to the land trails for middle-aged volunteers while regularly trained athletes showed significantly greater VO_2 in water (4, 6, 8, 10 and 12 km・h^<-1>). In water, middle-aged volunteers showed VO_2 at their highest treadmill speed was about 93% of the land VO_<2max> and regularly trained athletes' VO_2 was about 86% of the land VO_<2max>. Underwater running using the underwater treadmill thus promises to be one of the new types of fitness or training program for both middle-aged people and regularly trained athletes. In water, the relation-ship between HR and % VO_<2max> showed no significant difference from the land treadmill trails both in middle-aged volunteers and regularly trained athletes. Therefore, at waist-high immersion, the effects of hydrostatic force of water may be negligible so the relationship between HR and VO_2 of the land locomotion may be applied to underwater locomotion.
中京大学の論文
2002-03-31

水中トレッドミルを用いた水中歩行・走行の生理学的応答

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