Activity of the Rotator Cuff During Glenohumeral Mobilization

Participants will then be placed supine on a standard plinth. The investigators will then proceed to provide a mobilizing force to the participant's glenohumeral joints. Each of two investigators will, in sequence perform a 15 second longitudinal distraction, followed by a 15 second posteriorly directed glenohumeral glide with the shoulder placed in the open pack resting position (\~50 degrees abduction, slight horizontal adduction, external rotation).