Movement

General Terminology

• The right foot now steps forward towards intended target
• The left arm drives the racquet forward and up while the right arm is there more to support the racquet even though it is coming forward as well
• Keep swing racquet foward even after contact until the left arm is forced to straighten
• Begin to rotate the hips and shoulders to the right so your body is now going to your intended target

Shoulder Girdle

• The right shoulder is adducting with the middle and lower trapezius and rhomboid contracting concentrically
• The left shoulder is abducting with the pectoralis minor and serratus anterior contracting eccentrically 

Shoulder Joint

• The right shoulder joint is externally rotating with the infraspinatus and teres minor contracting eccentrically
• The left shoulder joint is internally rotating with the latissimus dorsi, teres major, pectoralis major, and subscapularis contracting concentrically

Elbow Joint

• At the start of the movement phase the left elbow joint is still in extending (not fully) with the triceps brachii and anconeus contracting isometrically
• During the second half of the movement phase the left elbow briefly fully extends with the triceps brachii and anconeus contracting eccentrically
• At the start of the movement phase the right elbow joint is in full extension with the triceps brachii and anconeus contracting isometrically
• During the second half of the movement phase the right elbow begins to slightly flex with the biceps brachii, brachialis, and brachioradialis contracting concentrically

Radioulnar Joint

• The left radioulnar joint is supinating with the biceps brachii and supinator contracting isometrically
• The right radioulnar joint is pronating with the pronator teres and pronator quadratus contracting isometrically

Wrist and Hand Joint Movements

• The right hand has flexion of the fingers and thumb with the flexor digitorum superficialis, flexor digitorum profundus, and flexor pollicis longus contracting concentrically
• The right wrist is in neutral position contracting isometrically
• The left hand has flexion of the fingers and thumb with the flexor digitorum superficialis, flexor digitorum profundus, and flexor pollicis longus contracting concentrically
• The left wrist is slightly extending with the extensor carpi ulnaris, extensor carpi radialis brevis, and extensor carpi radialis longus contracting eccentrically