The subclavius is stretched by bringing the arm back into extension, abduction, and lateral rotation.
Notes:
- Moving the arm at the shoulder/glenohumeral joint like this brings the clavicle into elevation, retraction, and upward rotation at the sternoclavicular joint, which is what actually stretches the subclavius.
- Given that the subclavius also elevates the first rib, asking the client to fully breathe out (which depresses the first rib) during the stretching protocol should increase the efficacy of the stretch.