Movement

General Terminology

• Right arm begins to move up and forward to make contact with the ball in front of you; you are lining the ball up with the front of your right foot
• Swing towards the net even after contact is made
• Hips and shoulders begin rotating to the left
• Knees are bent

Shoulder Girdle

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

Shoulder Joint 

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

Elbow Joint

• At the start of the movement phase the right 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 right elbow joint briefly moves into full extension with the triceps brachii and anconeus contracting eccentrically
• The left elbow joint is flexing with the biceps brachii, brachialis, and brachioradialis contracting concentrically

Radioulnar Joint

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

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