Hook Movement

Shoulder Girdle
Left: Protraction, Upward Rotation Serratus Anterior, Pectoralis Major, Minor (Concentric)
Right: Retraction Rhomboids, middle and lower fibers of Trapezius ( Isometric)

Shoulder Joint
Left: Abduction - All Fibers of Deltoid, Supraspinatus. Horizontal Adduction - Pectoralis Major (Concentric)
Right: Shoulder Flexion - Anterior Deltoid, Biceps Brachii, Coracobrachialis (Isometric)

Elbow
Left: Flexion Biceps Brachii, Brachialis, Brachioradialis (Isometric)
Right: Flexion Biceps Brachii, Brachialis, Brachioradialis (Isometric)

Wrist
Left: Neutral
Right: Neutral

Hand
Left: Finger Flexion Flexor Digitorum Profundus, Flex. Dig. Superficialis, Palmaris Longus, Flexor Pollicus Longus (Isometric)
Right:  Finger Flexion Flexor Digitorum Profundus, Flex. Dig. Superficialis, Palmaris Longus, Flexor Pollicus Longus (Isometric)