Infraspinatus
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The infraspinatus muscle does the following:
Laterally rotates the upper arm.This means that the infraspinatus muscle rotates the upper arm outward around the axis of the bone (i.e.
Infraspinatus - A muscle below ("infra") the spine.
Innervation - The degree or amount of stimulation of a muscle (or organ) by nerves.
To finish off the infraspinatus, hold a dumbbell in each hand, and perform a lateral raise to 90-degrees while keeping the elbows bent at 90-degrees.
Infraspinatus-the Infraspinatus muscle is the main external rotator (rotation away from the body) of the shoulder joint. Its actions are external rotation and shoulder abduction.
Secondary muscles: the Trapezius, the Rhomboids (beneath the trapezius) and the Rotator-Cuff muscles (subscapularis, supraspinatus, teres minor and infraspinatus).
At the shoulders, supra and infraspinatus muscles rotate the arm, the simplest, most effective exercise to strengthen these two muscles is to rotate the arm with a partner tightly holding the fist.
The four muscles composing the Rotator Cuff are Supraspinatus, Infraspinatus, Teres Minor and Subscapularis. These muscles originate from various aspects of the scapulae and insert on the humerous.
ROM Range Of Motion roman chair rotator cuff [pic] Four muscles (supraspinatus, infraspinatus, teres minor, and subscapularis) that run from the shoulder blade to the the upper arm, ...
It is beneficial to know these muscles supraspinatus (lifts the arms out to the side and up ) infraspinatus (outwardly rotates the upper arms) teres minor (same) and subscapularis (inwardly rotates the upper arm) ...
 See also: Minor, Teres, Injury, Chest, Extension
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