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首页> 外文期刊>International journal of sport nutrition >Metabolic effects of a protein-supplemented carbohydrate drink in marathon runners.
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Metabolic effects of a protein-supplemented carbohydrate drink in marathon runners.

机译：补充蛋白质的碳水化合物饮料在马拉松运动员中的代谢作用。

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A field study was performed to investigate the acute influence of a milk protein hydrolysate supplemented drink (CHO+PRO) on metabolism during and after a marathon run compared to the same drink without protein (CHO). Carbohydrate metabolites and hormones were not influenced by CHO+PRO. Levels of plasma free fatty acids were significantly lower and levels of urea and most amino acids were significantly higher with CHO+PRO. Sweat urea and ammonia nitrogen excretion during the run as well as urinary 3-methylhistidine excretion during the entire exercise day was similar in both treatments. Urinary total nitrogen was significantly increased and urinary pH decreased with CHO+PRO. It was concluded that the supplemented protein was absorbed and probably at least partially oxidized during the run and that no obvious negative metabolic effects occurred. CHO+PRO did not acutely affect myofibrillar protein breakdown as assessed by the 3-methylhistidine method; however, total body protein breakdown was not measured.
机译：进行了一项野外研究，以研究与不含蛋白质的同类饮料（CHO）相比，补充马拉松水解蛋白的饮料（CHO + PRO）对马拉松期间和之后的代谢的急性影响。碳水化合物代谢物和激素不受CHO + PRO影响。使用CHO + PRO，血浆游离脂肪酸水平显着降低，尿素和大多数氨基酸水平显着升高。在两种治疗中，跑步过程中的汗液尿素和氨氮排泄以及整个运动日的尿中3-甲基组氨酸排泄相似。 CHO + PRO可显着增加尿中总氮，降低尿中pH。结论是补充的蛋白质在运行过程中被吸收并且可能至少被部分氧化，并且没有发生明显的负面代谢作用。通过3-甲基组氨酸方法评估，CHO + PRO不会严重影响肌原纤维蛋白的降解;但是，没有测量全身蛋白质分解。

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