Scapular Retraction
This is a strengthening movement for the scapular (shoulder blade) and the back of the shoulder.
If you have pain with the shoulder joint in the back or a restriction in the front of the shoulder, this is an excellent exercise for improved posture and upper back strength.
The subscapularis muscle plays an important role in providing front shoulder joint stability, and ability to rotate the arm. It balances the end of the upper arm into the shoulder joint during functional movements of the arm/shoulder and assists the other rotator cuff muscles.