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HMS, BM EQ-Bank 104 MC

During a sprinting action, what is occurring in the quadriceps and hamstrings?

  1. Both muscles contract concentrically
  2. Both muscles contract eccentrically
  3. Quadriceps contracts concentrically while hamstrings relax
  4. Quadriceps contracts concentrically while hamstrings contract eccentrically
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Consider Option D:  Quadriceps contracts concentrically while hamstrings contract eccentrically

  • quadriceps contracts concentrically (shortens) to drive the leg forward
  • hamstrings contract eccentrically (lengthens under tension) to control the movement and prepare for the next phase.

Other Options:

  • A is incorrect: Both cannot shorten simultaneously
  • B is incorrect: Both cannot lengthen simultaneously
  • C is incorrect: Hamstrings must control leg movement