Fig. 1

Positions for the muscle release intervention: a Pectoralis major: supine with shoulder positioned at external rotation, abduction, and flexion; b Teres major: supine with shoulder flexion; sidelying with shoulder abduction; c Upper trapezius: sidelying with arm relaxed by the side; d Posterior deltoid: sidelying with arm horizontal adduction; e Infraspinatus: sidelying with shoulder internal rotation, thumb to the waist