The 100-Meter Dash Is a Quick and Short Run Requiring

The 100-meter dash is a quick and short run requiring explosive speed. On completion of the dash, the runners will continue to breathe hard for several seconds to minutes even though they are no longer running. Which of the following is the best explanation for why this is so?

A) Since the exercise was mostly aerobic exercise, the runners' bodies have not yet realized the run is over.
B) The runners' fast oxidative muscles are so slow to utilize oxygen, they only begin aerobic respiration by the time the run has finished.
C) Slow oxidative fibers are recruited last and have only started to work at completion of the run.
D) The runners' use of stored oxygen, glucose, and creatine phosphate is being replenished and this requires a prolonged increase of oxygen intake.

Correct Answer:

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