Scapular elevation agonists
Trapezius (upper fibers)
Levator scapula
scapular elevation synergists
Rhomboids
Scapular depression agonists
Trapezius (lower fibers)
Pectoralis minor
scapular depression synergists
Serratus anterior (synergist)
Scapular protraction agonists
Serratus anterior (agonist)
scapular protraction synergists
Pectoralis minor
Scapular retraction agonists
Trapezius (all fibers)
Rhomboids
scapular retraction synergists
Levator scapula
Scapular upward rotation agonists
Trapezius (all fibers)
Serratus anterior
Scapular downward rotation agonists
Levator scapula
Pectoralis minor
Rhomboids
Shoulder flexion agonists
Anterior deltoid
Pectoralis major (clavicular)
shoulder flexion synergists
Coracobrachialis
Biceps brachii (long head)
Shoulder extension agonists
Posterior deltoid
Latisimus dorsi
Teres major
shoulder extension synergists
Pectoralis major (sternal)
Triceps brachii (long head)
Shoulder abduction agonists
Deltoid
Supraspinatus
shoulder abduction synergists
Pectoralis major (overhead)
Shoulder adduction agonists
Pectoralis major
Latissimus dorsi
Teres major
shoulder adduction synergists
Teres minor
Coracobrachialis
Biceps brachii (short head)
Shoulder internal rotation agonists
Anterior deltoid
Pectoralis major
Latissimus dorsi
shoulder internal rotation synergists
Teres major
Subscapularis
Shoulder external rotation agonists
Posterior deltoid
Infraspinatus
Teres minor
Shoulder horizontal abduction agonists
Posterior deltoid
shoulder horizontal abduction synergists
Infraspinatus
Latissimus dorsi
Teres minor
Shoulder horizontal adduction agonists
Pectoralis major
shoulder horizontal adduction synergists
Anterior deltoid