Preparatory Phase

Shoulder Girdle

R and L: depression and downward rotation

Muscles (agonists): pectoralis minor, lower trapezius

Contraction: Concentric

Shoulder Joint

R and L: Extension

Muscles: latissimus dorsi, teres major, lower pectoralis major, posterior deltoid

Contraction: Concentric

Elbow Joint

R and L: extension

Muscles: triceps

Contraction: Concentric

Radioulnar Joint

R and L: pronation

Muscles: pronator teres, pronator quadratus

Contraction: Concentric

Wrist

R and L: extension

Muscles: extensor carpi ulnaris, radialis brevis and longus

Contraction: Concentric

Hand

R and L: extension

Muscles: extensor digitorum, indicis, digiti minimi, pollicis longus and brevis

Contraction: Concentric