External Rotation (Band)
External Rotation (Band) is a corrective shoulder exercise that uses elastic resistance to strengthen the posterior deltoid and rotator cuff muscles. It is essential for improving shoulder stability, correcting posture, and preventing injuries during heavy pressing movements.
Iridium typically programs this exercise as part of your configured warmup routine to activate the posterior shoulder before heavier pressing. Since variable band tension makes weight tracking imprecise, the AI relies on your RPE feedback to gauge intensity and ensure the load remains appropriate for a stabilizer muscle.
Form Cues
- Pin your elbow firmly against your side
- Keep your wrist straight and neutral
- Rotate your forearm outward as far as comfortable
- Squeeze your shoulder blade back slightly
- Control the band slowly on the return
- Don't let your elbow drift away from your ribs
- Don't twist your torso to generate force
- Don't shrug your shoulder up toward your ear
- Don't let your wrist bend or curl
Common Mistakes
- Detaching the elbow from the side
- Rotating the hips or torso
- Using a band with too much tension
- Rushing the eccentric (return) phase
Muscles Worked
This exercise primarily targets the posterior deltoid and the critical rotator cuff muscles (infraspinatus and teres minor) responsible for stabilizing the shoulder joint. Strengthening these muscles helps balance the shoulder girdle against strong internal rotators like the pecs and lats, significantly reducing the risk of impingement and improving overhead mechanics.
Primary
Secondary
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