Explain how the hamstring muscle group and quadriceps work together during a running stride. In your answer, refer to types of muscle contractions. (4 marks)
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Sample Answer
- During the running stride, the hamstrings and quadriceps demonstrate the antagonistic relationship between muscle groups.
- As the leg drives forward, the quadriceps contract concentrically to extend the knee. This causes the hamstrings to undergo eccentric contraction to control the movement, preventing hyperextension.
- During the recovery phase, the hamstrings contract concentrically to flex the knee. As a result, the quadriceps must lengthen eccentrically to control this flexion.
- This alternating pattern occurs because when one muscle group acts as the agonist (contracting), the opposing muscle must act as the antagonist (lengthening). Therefore, this coordinated action enables controlled movement and efficient force production throughout the running stride.
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Sample Answer
- During the running stride, the hamstrings and quadriceps demonstrate the antagonistic relationship between muscle groups.
- As the leg drives forward, the quadriceps contract concentrically to extend the knee. This causes the hamstrings to undergo eccentric contraction to control the movement, preventing hyperextension.
- During the recovery phase, the hamstrings contract concentrically to flex the knee. As a result, the quadriceps must lengthen eccentrically to control this flexion.
- This alternating pattern occurs because when one muscle group acts as the agonist (contracting), the opposing muscle must act as the antagonist (lengthening). Therefore, this coordinated action enables controlled movement and efficient force production throughout the running stride.