HMS, BM EQ-Bank 161 MC

During a 400 m race at high intensity, an athlete experiences muscular fatigue. What is the main cause?

Depletion of glycogen stores
Accumulation of lactic acid
Lack of oxygen
Depletion of creatine phosphate

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\(B\)

Show Worked Solution

B is correct: Lactic acid accumulation during high intensity glycolytic system use causes fatigue

Other Options:

A is incorrect: Glycogen depletion occurs over longer duration events
C is incorrect: Oxygen debt occurs after exercise completion
D is incorrect: CP depletion occurs in shorter activities under 10 seconds