What muscle action is involved in the movement of the knee joints in the power phase of the standing long jump?

Question

Quizplus · Accepted Answer

During the power phase of the standing long jump, the knee extensors (quadriceps) contract concentrically to extend the knee joint, generating the force required for the jump. The knee flexors (hamstrings) are also involved in the jump, but they primarily function to stabilize and control the movement of the knee.

What Muscle Action Is Involved in the Movement of the Knee