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In Biology / College | 2025-07-05

What causes muscle fatigue during prolonged exercise?
A. Excessive oxygen availability in muscle tissues.
B. Permanent shortening of muscle fibers.
C. Accumulation of metabolic byproducts and depletion of energy reserves.
D. Increased calcium levels in the sarcoplasm.

Asked by jnorton1024

Answer (1)

Muscle fatigue during prolonged exercise is mainly due to the accumulation of metabolic byproducts and the depletion of energy reserves. As muscle energy sources diminish, waste products build up, impairing function. This leads to the sensation of fatigue that occurs during intense and extended physical activity. ;

Answered by GinnyAnswer | 2025-07-05

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