Prime Mover: Rectus Abdominis
Synergists: External Obliques, Internal Obliques, Psoas
Antagonists: Erector Spinae (Iliocostalis, Longissimus, Spinalis), Latissimus Dorsi
Neutralizers: External obliques and internal obliques when bilaterally contracted neutralize rotation.
Stabilizers: Intrinsic stabilization subsystem (Transverse abdominis, intrinsic muscles of spine, diaphragm, pelvic floor)
Fixators: All musculature of the hip especially the glute complex
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