Which one of the following chemicals is associated with muscle fatigue?

Options

A. Uric acid
B. Acetic acid
C. Pyruvic acid
D. Lactic acid

Answer

D

Explanation

Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lac tic acid accumulation leads to Increased intracellular hydrogen ion (H+) concentration leads to a weaker contraction.