疲労困憊運動後に行う積極的回復としての軽運動が血漿アンモニア濃度に及ぼす影響

概要

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Ammonia is considered to be one of the factors in exercise fatigue. The purpose of this study was to examine the effect of light exercise as Active Recovery (AR) on plasma ammonia after exhaustive exercise. Five healthy male subjects performed an incremental exhaustive exercise on a treadmill twice, once followed by 40 min sitting (Passive Recovery : PR) , and the other followed by 20 min treadmill running at 30% VO_<2max> and 20 min sitting (AR). Arterialized blood was drawn from a superficial arm vein. Blood pH, blood HCO^-_3, plasma lactate, and plasma ammonia were determined. Blood pH in AR recovered to the pre-exercise level by 20 min after exercise (p>0.05), but not in PR. Blood HCO^-_3 in AR was significantly higher 15, 20, and 30 min after exercise than that in PR (p<0.05). Plasma lactate in AR was significantly lower 20 min after exercise than those in PR (p<0.05). Plasma ammonia did not differ between AR and PR. From these results, we suggested that light exercise as AR at 30% VO_<2max> for 20 min is useful to remove lactate without increasing ammonia.
2002-11-08