The Muscles Used to Throw a Baseball

In the lower body, the Rectus Femorus and Illiop Psoas flex the hip, bringing the leg up. Throwing the ball: The Pectoralis Major and Anterior Deltoid work in conjuction to both internally rotate and horizontally abduct, moving the ball forward. At the same time, the Triceps Brachii extends the elbow, providing more forward vectors. ................
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