Internal/External Shoulder Rotation
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Light-resistance internal and external rotation movements that train the four rotator-cuff (SITS) muscles.
Detail
Internal/external shoulder rotation is the exercise for the rotator cuff muscles (SITS): supraspinatus, infraspinatus, teres minor, and subscapularis. Their functions: supraspinatus abducts the humerus (does not rotate it); infraspinatus and teres minor produce external rotation (and assist horizontal abduction/extension); subscapularis produces internal rotation (and assists extension/adduction). NOTE: ensure that ONLY low resistances are used. Listed as an optional rotator-cuff exercise for muscle balance (Nautilus).
Key facts
- Primary Muscles: Supraspinatus, Infraspinatus, Teres Minor, Subscapularis (SITS).
- Use only low resistances.
- Trains internal and external rotation of the shoulder joint.
Connections
- Rotator Cuff (SITS) — the SITS group.
- Supraspinatus / Infraspinatus / Teres Minor / Subscapularis — the four muscles.
- Internal Rotation / External Rotation — the joint actions.
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Exercise guides
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Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.