レジスタンストレーニング終了後のホエイたんぱく質と炭水化物の摂取タイミングの違いが若齢鍛錬者の窒素バランスに与える影響
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概要
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The effect was investigated of a intake of whey protein and carbohydrate immediately after resistance training on nitrogen balance. Seven healthy trained young men (22±4yr, 173.7±3.8cm, 70.6±3.9kg) participated in two trials in random order, P0 experimental trial (19.6g of protein and 62.1g of carbohydrate intake immediately after resistance training) and P6 experimental trial (19.6g of protein and 62.1g of carbohydrate intake 6 hours after resistance training). Subjects completed a P0 and P6 experimental period of an energy balance diet while maintaining usual physical activity level. We assessed whole body protein metabolism by nitrogen balance method in P0 and P6 period in the last 3-days. The amount of nitrogen intake was not significantly difference in P0 and P6 period. The amount of nitrogen excretion was significantly lower in P0 period than that P6 period (p<0.01). Nitrogen balance in P0 period was significantly more positive than that in P6 period (p<0.01). In conclusion, the present study showed that intake of whey protein and carbohydrate immediately after resistance training in trained young men enhances nitrogen balance when energy balance is maintained.
- 日本運動生理学会の論文
- 2013-10-01