After about two weeks of taper, fast-twitch muscle fiber shows greatly increased muscle power, contraction speed and force.

在恢复的两周后，快速收缩肌肉纤维显示显著增强了肌肉能量，收缩速度以及力度。

youdao

While most muscles in mammals contain a mixture of slow- and fast-twitch fiber types, some muscle beds are enriched for one type or the other, Spiegelman said.

Spiegelman说，大部分哺乳动物的肌肉包含两种类型的肌纤维，但有些肌肉是偏重于富含其中的一种。

youdao

Some research has shown that the greatest benefits from taper occur in fast-twitch muscle fiber, the type of muscle primarily used by sprinters.

一些研究显示，恢复的最大的受益者产生于快速收缩肌肉纤维中，这种类型的肌肉，主要是冲刺(短距离)运动员使用的。

youdao

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

FORBES: Nike Dumps Lance: But Who's Lying Now?