Your deltoid muscles make up a main muscle group in your upper body. They’re connected with many other muscles and bones in your upper back, neck, and shoulder region and are extremely mobile.

This shoulder workout is all about controlled power and consistent volume. Kali Muscle and Big Boy go through an intense ...

Measurement of posterior shoulder tightness was based on horizontal flexion ROM (cross-chest adduction) measurement. [15] Because we measured the transverse tightness of the muscles by ...