World-class sprinters running at top speed are most likely to _______ in the skeletal muscles used for running by the end of 30 seconds.

Question

Quizplus · Accepted Answer

Sprinting at top speed primarily relies on the anaerobic breakdown of glucose, which rapidly produces ATP through glycolysis. This process relies on preformed ATP and creatine phosphate, which can sustain maximal effort for only a short time (about 30 seconds). After this point, the muscles will start to fatigue and the sprinters will slow down. While sprinters do have some reserve of creatine phosphate, it is limited and will eventually be depleted. Oxygen-dependent oxidative metabolism (choice E) is not the primary source of ATP production during short-term, high-intensity activities like sprinting.

World-Class Sprinters Running at Top Speed Are Most Likely to _______