<原著論文>長距離ランナーの長時間運動後におけるタンパク摂取タイミングのタンパク代謝に及ぼす影響

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The aim of this study was to elucidate the effect of protein supplementation timing after prolonged exercise on protein metabolism in distance runners (n=5). A protein supplementation (10g) was administered to each subject on two separate occasions; immediately after 60 min of 60% VO_2max cycling (early intake : E) and 2h after 60 min of 60%VO_2max cycling (late intake : L). Blood samplings were obtained immediately pre intake, 30,60,and 120 min post intake from ante-cubital vein. At 30 min after protein supplementation, plasma total amino acid and plasma phenylalanine levels rose to the same degrees in both occasions. At 60 min after protein supplementation, however, the degree of increase in plasma total amino acid and plasma phenylalanine were significantly lower in E than in L (total amino acid; 350±51 vs 589±160 nmol/ml, p<0.05,phenylalanine; 8.6±3.2 vs 14.2± 2.4nmol/ml, p<0.05 ). These results suggest that early intake of protein after prolonged exercise in distance runners more effectively increase protein synthesis than that administered late.
久留米大学の論文
2000-12-01