Central fatigue of a muscle results directly from the accumulation of lactic acid in the muscle.

Question

Quizplus · Accepted Answer

Central fatigue is not directly caused by lactic acid accumulation in the muscle. It is believed to be a result of changes in neurotransmitter activity in the brain, decreased glycogen stores, and other factors that affect the central nervous system's ability to activate muscle fibers. Lactic acid buildup in the muscle may contribute to peripheral fatigue, but it is not the sole cause of fatigue.

Central Fatigue of a Muscle Results Directly from the Accumulation