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首页> 外文期刊>Journal of the American College of Nutrition >The influence of a sports drink on the postexercise metabolism of elite athletes as investigated by NMR-based metabolomics.
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The influence of a sports drink on the postexercise metabolism of elite athletes as investigated by NMR-based metabolomics.

机译：通过基于NMR的代谢组学研究，运动饮料对精英运动员运动后代谢的影响。

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OBJECTIVE: The aim of this study is to evaluate the systemic effects of an isotonic sports drink on the metabolic status of athletes of the Italian Olympic rowing team during recovery after strenuous and prolonged physical exercise by means of nuclear magnetic resonance (NMR)-based metabolomics analysis on plasma and urine. METHODS: Forty-four male athletes of the Italian Olympic rowing team were enrolled in a double-blind crossover study. All subjects underwent 2 evaluations at 1-week intervals. The evaluation was performed on a rowing ergometer after strenuous physical exercise to produce a state of dehydration. Afterward, the athletes were rehydrated either with a green tea-based carbohydrate-hydroelectrolyte drink or with oligomineral water. Three blood samples were drawn for each subject: at rest, after the exercise, and following rehydratation, while 2 urine samples were collected: at rest and after the rehydratation period. Biofluid samples were analyzed by high-resolution (1)H NMR metabolic profiling combined with multilevel simultaneous data-analysis (MSCA) and partial-least squares-discriminant analysis (PLS-DA). RESULTS: The between-subject variations, as evaluated by MSCA, reflected the variations of lactate levels induced by the physical exercise. Analysis of the within-individual variance using multilevel PLS-DA models of plasma and urine metabolic profiles showed an effect of the green tea-based sports drink on glucose, citrate, and lactate levels in plasma and on acetone, 3-OH-butyrate, and lactate levels in urine. The increase of caffeine and hippuric acid levels in urine indicated the absorption of green tea extract components. CONCLUSIONS: NMR-based metabolomics allowed the complex effects of a green tea extract-based carbohydrate/hydroelectrolyte beverage on the energy metabolism of athletes during recovery by postexercise rehydration to be evaluated.
机译：目的：本研究旨在通过基于核磁共振（NMR）的代谢组学评估等渗运动饮料对意大利奥林匹克划船队运动员在剧烈和长期体育锻炼后恢复过程中代谢状况的系统影响。血浆和尿液分析。方法：意大利奥林匹克划船队的44名男运动员参加了一项双盲交叉研究。所有受试者每隔1周接受2次评估。在剧烈运动后以脱水状态在划船测力计上进行评估。之后，运动员以绿茶基碳水化合物-氢电解质饮料或低矿物质水补充水分。为每个受试者抽取三个血样：静止，运动后和补液后，同时收集2个尿液样本：静止和补液后。通过高分辨率（1）H NMR代谢谱分析，多级同时数据分析（MSCA）和偏最小二乘判别分析（PLS-DA）分析生物流体样品。结果：由MSCA评估的受试者间差异反映了体育锻炼诱发的乳酸水平的差异。使用血浆和尿液代谢曲线的多级PLS-DA模型对个体内部差异进行分析后，发现基于绿茶的运动饮料对血浆中葡萄糖，柠檬酸和乳酸水平以及丙酮，3-OH-丁酸，和尿液中的乳酸水平。尿中咖啡因和马尿酸水平的增加表明绿茶提取物成分的吸收。结论：基于核磁共振的代谢组学可以评估基于绿茶提取物的碳水化合物/氢电解质饮料对运动员运动后补液恢复过程中能量代谢的复杂影响。

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