They also engage the supraspinatus, a smaller shoulder muscle located above the shoulder joint. While the lateral deltoid is ...
Related: This Simple Trick Could Improve Your Shoulder Mobility in 2 Minutes or Less "The deltoids are a three-part muscle ...
Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...