Exercise guide
Cable Kneeling Shoulder Internal Rotation
- Intermediate
- Isolation
- Rep-based
- Back
- Shoulders
This isolation exercise specifically targets the subscapularis, the largest rotator cuff muscle, to improve shoulder stability and joint health. The kneeling position lowers your center of gravity, reducing momentum and ensuring the internal rotators perform the work.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Set the cable pulley to a height that aligns with your elbow when you are in a half-kneeling position.
- Kneel perpendicular to the cable machine with your working arm closest to the pulley.
- Grip the handle with a neutral grip, keeping your elbow bent at a 90-degree angle.
- Position your elbow firmly against your side, using a small rolled-up towel between your elbow and ribs to ensure proper alignment.
How to do it
- Exhale as you rotate your forearm inward across your body toward your midsection, keeping your elbow pinned to your side.
- Continue the rotation until your forearm is parallel to your stomach, focusing on the squeeze deep within the shoulder joint.
- Inhale as you slowly reverse the movement back to the starting position, maintaining constant tension on the cable.
- Maintain a controlled tempo, focusing on a 2-second concentric and a 3-second eccentric phase.
Form checklist
- Keep your elbow tucked tightly against your ribs throughout the entire set.
- Maintain a tall, upright posture with your core engaged to prevent the torso from twisting.
- Ensure your wrist remains neutral and does not curl inward to assist the movement.
- Keep your shoulder blade retracted and depressed; do not let the shoulder 'hike' toward your ear.
Pro tips
- Focus on the 'mind-muscle connection' by imagining the upper arm bone (humerus) spinning in place within the socket.
- Use a light weight; the rotator cuff muscles are small and respond better to high-quality repetitions than heavy loads.
Make it harder
- Incorporate a 3-second isometric hold at the point of maximum internal rotation (forearm against the stomach).
- Perform the exercise with a slow 5-second eccentric phase to maximize time under tension.
Frequently asked
- What muscles does the cable kneeling shoulder internal rotation work?
- The cable kneeling shoulder internal rotation primarily targets the deltoids and rotator cuff, and also works the lats and rhomboids as secondary muscles.
- What equipment do you need for the cable kneeling shoulder internal rotation?
- The cable kneeling shoulder internal rotation uses cable.
- Is the cable kneeling shoulder internal rotation good for beginners?
- The cable kneeling shoulder internal rotation is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.