Flywheel External Shoulder Rotation
Strength
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The Flywheel External Shoulder Rotation is a dynamic strength exercise that uses a flywheel device's inertial resistance to train controlled external rotation of the shoulder joint, enhancing rotator cuff stability and injury prevention. It primarily targets the infraspinatus and teres minor muscles in the shoulders, with secondary engagement of the posterior deltoids. Ideal for athletes in overhead sports like throwing or swimming, it requires only a flywheel unit and suits those building shoulder durability and power.
How to Perform Flywheel External Shoulder Rotation
- 1Secure the flywheel unit at waist height using an anchor point or door attachment, ensuring the strap is taut when standing perpendicular to it.
- 2Attach a single handle to the strap and stand sideways to the flywheel with your working side closest to it, feet shoulder-width apart.
- 3Grasp the handle with your working hand (palm facing in), elbow bent at 90 degrees and tucked against your side at torso level; extend your forearm across your body toward the flywheel.
- 4Brace your core, keep your elbow pinned to your side, and inhale as you prepare to pull.
- 5Exhale forcefully as you rotate your forearm outward away from your body against the flywheel's resistance, squeezing your rear shoulder.
- 6Allow the flywheel to eccentrically pull your arm back across your body with control as you inhale, maintaining elbow position.
- 7Perform 8-12 reps per side, then switch sides.
- 8Key form tips: Keep elbow glued to your side throughout—avoid letting it flare out. Move slowly and controlled (2-3 seconds per rep) to maximize eccentric loading. Stop if you feel pain in the shoulder joint.
