Quadriceps femoris
The hamstring muscle group (biceps femoris, semitendonosis, semimembranosis) are the antagonists to the quadricep group.
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The antagonist muscle in the flexion of the knee is the quadriceps muscle group. When the knee is being flexed, the quadriceps relax to allow the hamstrings to contract and bring about the flexion movement.
quadriceps
Quadricepts
Flexing the thigh, extending the leg, adducts leg
The Antagonists was created in 1971.
The antagonists would be those muscles that cause knee flexion. Hamstrings (biceps femoris, semimembranosus, semitendonosis) are the primary knee flexors, and would thus be antagonists to knee extension.
My quadriceps are sore. The coach's most dreaded words were, "Prepare to stretch your quadriceps".
Quadriceps will extend your lower leg.