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首页> 外文期刊>International journal of sport nutrition and exercise metabolism >Effects of four weeks L-carnitine L-tartrate ingestion on substrate utilization during prolonged exercise.
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Effects of four weeks L-carnitine L-tartrate ingestion on substrate utilization during prolonged exercise.

机译:服用四周左旋肉碱左旋酒石酸盐对长时间运动对底物利用率的影响。

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摘要

In a randomized, placebo-controlled, double-blind crossover design, 15 trained males undertook exercise trials during two 4 wk supplementation periods, with either 3 g L-Carnitine L-tartrate (LCLT) or 3 g placebo (P) daily. Total carbohydrate and fat oxidation during 90 min steady state cycling were not different between 0 or 4 wk within LCLT or P trials (mean +/- standard deviation: carbohydrate oxidation P0 99 +/- 36, P4W 111 +/- 27, LCLT0 107 +/- 33, LCLT4W 112 +/- 32 g, respectively; fat oxidation P0 99 +/- 28, P4W 92 +/- 21, LCLT0 94 +/- 18, LCLT4W 90 +/- 22 g, respectively). Subsequent 20 km time trial duration was shorter after P (P0 31:29 +/- 3:50, P4W 29:55 +/- 2:58 min:s, P < 0.01), with no significant change over LCLT (LCLT0 31:46 +/- 4:06, LCLT4W 31.19 +/- 4.08 min:s). Four weeks LCLT supplementation had no effect on substrate utilization or endurance performance.
机译:在随机,安慰剂对照,双盲交叉设计中,15位训练有素的男性在两个4 wk的补充期内进行了运动试验,每天服用3 g L-肉碱L-酒石酸盐(LCLT)或3 g安慰剂(P)。在LCLT或P试验中,90分钟稳态循环中的总碳水化合物和脂肪氧化在0或4周之间没有差异(平均值+/-标准偏差:碳水化合物氧化P0 99 +/- 36,P4W 111 +/- 27,LCLT0 107分别为+/- 33,LCLT4W 112 +/- 32 g,脂肪氧化P0 99 +/- 28,P4W 92 +/- 21,LCLT0 94 +/- 18,LCLT4W 90 +/- 22 g)。 P后的后续20 km时间试验持续时间较短(P0 31:29 +/- 3:50,P4W 29:55 +/- 2:58 min:s,P <0.01),与LCLT相比无明显变化(LCLT0 31 :46 +/- 4:06,LCLT4W 31.19 +/- 4.08 min:s)。四周的LCLT补充剂对底物利用率或耐力性能没有影响。

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