dottjt (dottjt)

Race #577

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Official speed 70.39 wpm (57.79 seconds elapsed during race)
Race Start February 4, 2012 11:49:46pm UTC
Race Finish February 4, 2012 11:50:44pm UTC
Outcome Win (1 of 2)
Accuracy 97.0%
Points 0.00
Text #408 (Length: 339 characters)

There are two kinds of fibers in our muscles, red and white. When an athlete trains for long distance running, he or she builds more red muscle fibers than white muscle fibers in his calf muscles. A sprinter has more white muscles. If you retrain a marathon runner to be a sprinter, most of the muscle fibers will convert to white muscles.