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HMS, BM EQ-Bank 161 MC

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

  1. Depletion of glycogen stores
  2. Accumulation of lactic acid
  3. Lack of oxygen
  4. Depletion of creatine phosphate
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\(B\)

Show Worked Solution

Consider Option B:  Accumulation of lactic acid

  • 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

\(\Rightarrow B\)