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首页> 外文期刊>International Journal for Vitamin and Nutrition Research: Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung >Effects of 3-week consumption of green tea extracts on whole-body metabolism during cycling exercise in endurance-trained men.
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Effects of 3-week consumption of green tea extracts on whole-body metabolism during cycling exercise in endurance-trained men.

机译：3周食用绿茶提取物对耐力训练的男性进行循环运动期间全身代谢的影响。

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摘要

The consumption of green tea has been generally associated with beneficial effects on human whole-body metabolism and recent investigations with animals indicate favorable effects of green tea extracts (GTE) on energy metabolism during exercise and aerobic exercise performance. Therefore, the purpose of this study was to examine the effects of a three-week supplementation with GTE on human energy metabolism during submaximal cycling exercise. In a randomized, double-blind crossover setting, ten healthy endurance-trained men exercised for 2 hours at 50 % W(max) before and after three weeks of placebo or GTE supplementation (GTE containing about 160 mg x day(-1) total catechins, of which about 70 mg x day(-1) was epigallocatechin-3-gallate). The GTE supplementation did not influence indices of fat and energy metabolism (fatty acids, 3-beta-hydroxybutyrate, triacylglycerol, low-density-lipoprotein cholesterol, total cholesterol, lactate, glucose, oxygen uptake, respiratory exchange ratio, energy expenditure), inflammation processes (interleukin-6, C-reactive protein), and oxidative stress (thiobarbituric-acid reactive substances, oxidized low-density-lipoprotein cholesterol), but plasma creatine kinase concentration at rest and during exercise was significantly lower (p = 0.039) and high-density-lipoprotein cholesterol concentration at rest was significantly higher (p = 0.043) compared to placebo. In conclusion, these results suggest only slight effects on whole-body metabolism after supplementation with GTE.
机译：食用绿茶通常与对人体全身代谢的有益作用有关，最近对动物的研究表明，绿茶提取物（GTE）对运动过程中的能量代谢和有氧运动表现出有利的影响。因此，本研究的目的是研究在最大循环运动中三周补充GTE对人体能量代谢的影响。在随机，双盲交叉试验中，十名健康耐力训练的男性在安慰剂或GTE补充三周（GTE总计约160 mg x day（-1））前后分别以50％W（max）锻炼2小时。儿茶素，其中约70毫克x天（-1）为表没食子儿茶素-3-没食子酸酯。 GTE补充剂不会影响脂肪和能量代谢的指标（脂肪酸，3-β-羟基丁酸酯，三酰基甘油，低密度脂蛋白胆固醇，总胆固醇，乳酸，葡萄糖，氧气吸收，呼吸交换率，能量消耗），炎症进程（白介素6，C反应蛋白）和氧化应激（硫代巴比妥酸反应性物质，氧化的低密度脂蛋白胆固醇），但在休息和运动过程中血浆肌酸激酶浓度显着降低（p = 0.039）和与安慰剂相比，静止时高密度脂蛋白胆固醇浓度显着更高（p = 0.043）。总之，这些结果表明补充GTE后对全身代谢的影响很小。

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