Bilateral Scapular Retraction and Shoulder External Rotation with Resistance Bands
Bilateral scapular retraction (squeezing the shoulder blades together) with shoulder joint external rotation (BSRSER) with resistance bands and its variations can be performed in either the standing, sitting, or supine/hook lying (lying face up) positions is a basic-level exercise and is intended to strengthen muscles within the posterior shoulder girdle.
Ronai, P. (2018). Bilateral scapular retraction and shoulder external rotation with resistance bands. ACSM's Health & Fitness Journal, 22(4), 19–24. doi: 10.1249/FIT.0000000000000399
ACSM's Health & Fitness Journal
American College of Sports Medicine