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首页> 外文期刊>International journal of sport nutrition >Creatine supplementation differentially affects maximal isometric strength and time to fatigue in large and small muscle groups.
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Creatine supplementation differentially affects maximal isometric strength and time to fatigue in large and small muscle groups.

机译：肌酸补充剂会影响大小肌肉的最大等距强度和疲劳时间。

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摘要

Ten physically active, untrained, college-aged males (26.4 +/- 5. 8 years old) received creatine (CR, 5 g creatine monohydrate + 3 g dextrose) and placebo (PLA, 7 g dextrose) supplementation four times per day for 5 days in a double-blind, randomized, balanced, crossover design. Performance was assessed during maximal and three repeated submaximal bouts of isometric knee extension and handgrip exercise. CR supplementation significantly increased (p <.05) maximal isometric strength during knee extension but not during handgrip exercise. CR supplementation increased time to fatigue during each of the three bouts of submaximal knee extension and handgrip exercise when compared to the PLA trials. These findings suggest that CR supplementation can increase maximal strength and time to fatigue during isometric exercise. However, the improvements in maximal isometric strength following CR supplementation appear to be restricted to movements performed with a large muscle mass.
机译：每天接受十次补充肌酸（CR，5 g肌酸一水合物+ 3 g葡萄糖）和安慰剂（PLA，7 g葡萄糖）的十名体育锻炼，未经训练的大学年龄男性（26.4 +/- 5. 8岁）。采用双盲，随机，平衡，交叉设计的5天。在等距膝盖伸展和握力运动的最大和三个次次最大回合中评估性能。 CR补充剂在膝盖伸展过程中最大等距力量显着增加（p <.05），而在握力锻炼过程中则没有。与PLA试验相比，CR补充疗法在次最大膝关节伸展和握力运动的三回合中，增加了疲劳时间。这些发现表明，补充CR可以增加等强度运动期间的最大力量和疲劳时间。但是，补充CR后最大等距强度的改善似乎仅限于以大块肌肉进行的运动。

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