Tuesday, October 5, 2010

Arm and hand push phase


From elevation position, the player flexes the shoulder further and extends the elbow in order to give a push force on the ball. In the end of this phase shoulder is in 150 degrees of flexion, elbow is fully extended and wrist is flexing to give the final push on the ball. This phase finishes when the ball has no contact any more with the middle finger of the shooting arm



Shoulder girdle- Scapulothoracic elevation by the trapezius upper/middle fibers,  rhomboids, and levator scapulae

Shoulder joint-  Shoulder joint is in flexion concentrically contracting the pectoralis major upper fibers and deltoid anterior fibers.
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Elbow and Radioulnar joints- Elbow is in extension by triceps brachi long, lateral and medial heads, and anconeus

Hip Joint- Posterior pelvis rotation. Extension of semitendinosus, semimembranosus, biceps femoris and gluteus maximus.

Knee Joint- Concentric contraction by extension of the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis. 


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