tinkerbell (ting1018)

Race #3

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Official speed 46.48 wpm (82.87 seconds elapsed during race)
Race Start September 9, 2011 3:03:25pm UTC
Race Finish September 9, 2011 3:04:48pm UTC
Outcome Win (1 of 2)
Accuracy 70.0%
Points 0.00
Text #1080408 (Length: 321 characters)

有兩種纖維在我們的肌肉,紅色和白色。當一個運動員的長途列車運行,他或她構建更多的紅肌纖維比白肌纖維在他的小腿肌肉。阿短跑選手有更多的白色肌肉。如果你再培訓馬拉松運動員是一個短跑選手,大部分肌肉纖維將轉換為白色肌肉。