Tuesday, October 5, 2010

Follow Through Phase


 

 
  • General Instructions
  • Swing directly through the ball and extend out in the direction you hit the ball. Continue to rotate your body and when you've extended out fully, bring your forearm and wrist with the head of the racket to opposite shoulder. At this point you have brought your racket across your body in a smooth motion. Trunk is still rotated with weight transferred to leading foot. You will finish your motion with your upper body turned further around than facing the net.
  • As racket and arm are completely above your shoulder the pectoralis minor will abduct the scapula all the way forward to allow the follow through to be complete, while the serratus anterior provides a stable platform for the humeral head. Traperizius upper and middle fibers along with the levator scapular and rhomboids elevate the scapula to allow the arm to completely swing the racket above the shoulder.
  • From slightly internally rotating, finish your internal rotation by concentrically contracting your pectoralis major, latissimus dorsi, teres major and subscapularis. Diagonally adduct shoulder joint by concentrically contracting your pectoralis major, anterior deltoid, and coracobrachialis muscles. Non-dominant hand externally rotates the should joint by isometrically contracting your infraspinatus and teres minor muscles.
  • Completely flex the right (or dominant arm) elbow joint by concentrically contracting the biceps brachii, brachialis and brachioradialis
  • Completely extend your right hip joint by eccentrically contracting your gluteus maximus, biceps fomoris, semitendinosus, and semimembranosus. Stabilize your hip joint.
  • Left knee joint should be stablized, while right knee joint is fully extended by eccentrically contracting your vastus medialis, vastus intermedius, rectus femoris, and vastus lateralis

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