[7–9] Specifically, several researchers [10–13] hypothesized that the stiffness of specific muscles (rotator cuff) may contribute to posterior shoulder stiffness. These potential mechanisms ...

The posterior chain muscles live on the backside of your body and include the glutes, hamstrings, calves, erector spinae, lats, and rear shoulder muscles. Incorporating posterior chain strength ...

It’s no wonder they ... your upper arm and shoulder. Its main purpose is to help you lift and rotate your arm. The deltoid muscle has three parts: anterior, lateral, and posterior.

In agreement with the statements of previous studies, that the posterior muscles play a role in posterior shoulder tightness, [11,12] our results specifically indicated that the 3 muscles made ...