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Hip Extension the agonist would be Glutues Maximus
prime mover (agonist)
Primer Mover (agonist)
An agonist muscle is a muscle that plays a part in the extension of a muscle. The agonist muscles for a knee extension are the quadriceps and hamstrings.
Antagonist: lats Agonist: Abdominals
fixator
fixator
Agonist(s) - Gluteus Maximus/Quadriceps FemorisSynergist(s) - Biceps Femoris (Hamstrings)Stabilizer(s) - Transversus AbdominisAntagonist(s) - Hip Flexors (Mainly the Iliopsoas)Movement(s) - Hip Extension/Knee ExtensionPlanes - Sagittal PlaneYour agonist(s) (when done properly i.e. sitting back/knees out) for a squat will be your glutes and quadriceps. Your synergist(s) will actually be your hamstrings as the biceps femorislong head assists greatly in hip extension. Your antagonist(opposing muscle) during a squat will be your Hip flexors i.e. Hip flexion.
Flexor carpi
Rectus femoris+ anterior thigh; quadriceps+ extension of leg at knee Vastus lateralis+ lateral anterior thigh; quadriceps+ extension of leg at knee Vastus Medialis+ medial anterior thigh; quadriceps+ extension of leg at knee Vastus intermedius+ deep anterior thigh; quadriceps+ extension of leg at knee Sartorius (*) parallel strap-like muscle that crosses thigh flexion of knee forward Biceps femoris* posterior thigh; hamstring* flexion of leg at knee Semitendinosus* posterior thigh; hamstring* flexion of leg at knee Semimembranosus* posterior thigh; hamstring* flexion of leg at knee
Agonist - Pectoralis Major, Triceps Brachii Antagonist - Bicep Brachii, Latissimus Dorsi
hip extensor, gluteus maximus