The results show that the damage of skeletal muscle would occur after a prolonged eccentric exercise, especially in the fast muscle.

结果提示，一次长时间离心运动可造成骨骼肌的损伤，快肌更为明显；

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Running fast while fatigued forces your body to recruit muscle fibers that might otherwise go untrained.

在疲劳状态下快速奔跑会促使你的肌肉纤维得到增强，否则就得不到锻炼。

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Another possible cause of muscle cramping at the end of long runs or RACES is that you simply went out too fast.

长跑和竞赛快到终点而发生肌肉痉挛的另一个可能原因是跑得过快。

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Or the gene that produces more fast twitch muscle fiber and has been found in all Olympic sprinters.

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Barrett- Jackson, for instance, is the most popular of the American houses and known for intense, fast sales on lots filled with muscle cars and resto-mods.

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