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HMS, BM EQ-Bank 187

Outline TWO causes of fatigue when an athlete performs a 100 m sprint.   (3 marks)

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Sample Answer

Any 2 of the following

  • The ATP-PCr system depletes quickly during the 100 m sprint as the phosphagen stores in the muscles are exhausted within the first 10 seconds of maximal effort.
  • The central nervous system experiences fatigue due to the rapid and continuous recruitment of fast-twitch muscle fibres required for explosive power throughout the sprint.
  • As the glycolytic system begins to engage towards the end of the race, lactic acid starts accumulating in the working muscles, contributing to performance decline.
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Sample Answer

Any 2 of the following

  • The ATP-PCr system depletes quickly during the 100 m sprint as the phosphagen stores in the muscles are exhausted within the first 10 seconds of maximal effort.
  • The central nervous system experiences fatigue due to the rapid and continuous recruitment of fast-twitch muscle fibres required for explosive power throughout the sprint.
  • As the glycolytic system begins to engage towards the end of the race, lactic acid starts accumulating in the working muscles, contributing to performance decline.