10 subjects will be randomized to begin with the dominant shoulder. Investigators will measure baseline outcomes on the dominant shoulder, apply OMT treatment, measure post treatment outcomes on dominant shoulder, a 5-minute rest period as a washout period, then proceed to measure baseline measures on non-dominant shoulder, a rest that is equivalent to the time needed for OMT treatment, ending with post measurements on the non-dominant shoulder.

10 subjects will be randomized to begin with the non-dominant shoulder. Investigators will measure baseline outcomes on the non-dominant shoulder, a rest period equivalent to the time needed for OMT treatment, measure post treatment outcomes on non-dominant shoulder, a 5-minute rest period as a washout period, then proceed to measure baseline measures on dominant shoulder, provide OMT treatment, ending with post measurements on the dominant shoulder.

Combination OMT approach utilizing Muscle Energy Technique (MET), Articulatory Technique (ART), and Myofascial Release (MFR). It is a series of direct OMT addressing the barrier of somatic dysfunction (SD) with the goal of restoring neurovascular balance and improved motion of the shoulder girdle and glenohumeral joint. Utilizing these three OMT techniques, the practitioner attempts restoration of glenohumeral joint motion using shoulder extension, flexion, circumduction with compression, circumduction with distraction, abduction, adduction, external rotation, internal rotation, and distraction in abduction. The study uses a modified version of the Spencer technique, done in the seated position for patient comfort, as well as adding to the treatment sequence: latissimus dorsi, pectoralis minor-major, serratus anterior, and rhomboid major-minor. Adding these muscles into treatment will help to address and correct sternoclavicular joint SD, acromioclavicular joint SD, and scapular SD.

Using Shear Wave Elastography to measure muscle stiffness (kPa) of the supraspinatus, infraspinatus, posterior shoulder capsule, and coracoacromial ligament.

Using Vicon motion capture system to calculate landmark coordinates and using morphometric canonical variate analysis to analyze mobility changes.

Using ultrasound to capture blood flow of the supraspinatus, infraspinatus, posterior shoulder capsule, and coracoacromial ligament.

Using Visual Analogue scale to measure participant's subjective measure of shoulder stiffness. Scores range from 0 to 10, with 0 being "Not stiff at all" and 10 being "Very stiff."