During short periods of intense exercise, energy in muscles is primarily derived from

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During short periods of intense exercise, there is not enough oxygen available for aerobic respiration. Instead, energy is primarily derived from anaerobic respiration and creatine phosphate breakdown. Anaerobic respiration produces energy quickly but also leads to the accumulation of lactic acid, which causes fatigue and muscle pain. Creatine phosphate breakdown provides a quick source of energy but can only sustain muscle activity for a short period of time. Therefore, both processes are utilized to provide energy for short bursts of intense exercise.

During Short Periods of Intense Exercise, Energy in Muscles Is