Reformer shoulder external rotation with the arm in straps is a controlled strengthening exercise targeting the rotator cuff, particularly infraspinatus and teres minor.
It also engages the posterior deltoid and the scapular stabilisers.
This exercise is commonly prescribed to improve shoulder stability and support rehabilitation following shoulder injury.
Set up the Reformer with appropriate spring tension as advised by your physiotherapist.
Kneel upright on the reformer carriage with your working arm is furthest away from the pulleys and your lower leg resting against the shoulder pads.
Hold one strap in the working hand with your forearm across your abdomen.
Position your elbow bent to 90 degrees and tucked by your side.
Keeping your elbow fixed by your side, slowly rotate your forearm outwards, moving the hand away from your body.
Ensure the movement occurs only at the shoulder joint — avoid twisting your trunk.
Pause briefly at end range while maintaining control.
Slowly return to the starting position, resisting the pull of the strap.
Complete repetitions as prescribed by your physiotherapist.
