The cable internal rotation is an isolation exercise performed side-on to a low pulley with the elbow pinned to the ribs, turning the forearm across the stomach to train the subscapularis. It is the mirror of thestanding cable external rotation: the working arm is the one nearer the machine, and the cable resists the arm turning inward rather than outward. Because the pull is horizontal, the load stays constant through the whole arc instead of dropping off. Lifters use it to balance a shoulder programme that already has plenty of external rotation work.
What Muscles Does the Cable Internal Rotation Work?
- Primary: subscapularis (rotator cuff)
- Secondary: pectoralis major (sternal fibres), anterior deltoid, teres major
- Tertiary: latissimus dorsi, lower trapezius, obliques holding the trunk still
How Do You Set Up for the Cable Internal Rotation?
Set a single pulley at elbow height and clip on a D-handle with a light load. Stand with your right side to the machine, feet shoulder width apart and knees soft. Grasp the handle in the right hand with a neutral grip and pin that elbow to your ribs, bent to 90 degrees, forearm pointing away from your body. Step away until the cable is taut and set the shoulder blade down and back.
How Do You Perform the Cable Internal Rotation?
- Set the elbow at 90 degrees against your ribs, wrist straight and shoulder blade down and back.
- Rotate the forearm inward across your body, pivoting only at the shoulder while the elbow stays glued to your side.
- Stop when the forearm reaches your stomach, where the front of the shoulder is fully tight.
- Hold the end position for one count, feeling the pull deep in the front of the shoulder joint.
- Let the forearm turn back out over two seconds, resisting the cable as it pulls the hand toward the machine.
- Stop with the forearm pointing at the machine and the cable still taut, then start the next rep; switch sides after the set.
What Are the Key Form Cues?
- Elbow glued to the ribs: hold light pressure from the elbow into your side in both halves of the rep so only the shoulder turns.
- Sweep the hand in a flat arc: the knuckles travel level at elbow height, never rising toward the chest or dropping to the hip.
- Keep the wrist straight so the cable turns the forearm rather than the hand.
- Hold the shoulder blade set back as the hand comes across, not letting the shoulder roll forward.
- Brace the trunk so the ribcage does not turn toward the machine to add range.
What Are the Most Common Mistakes?
- Loading the stack too heavily: the cuff cannot turn the weight, so the elbow leaves the ribs and the lat and chest swing the arm in; use a load that turns slowly.
- Turning the torso toward the machine: rotating the ribcage adds range the shoulder never produced, so keep the chest square and rotate the arm alone.
- Letting the shoulder roll forward at the end position: the humeral head slides forward in the socket under load, so keep the blade set back as you finish.
- Raising the elbow away from the ribs: the arc moves into abduction and the deltoid takes over, so pin the elbow down first.
- Letting the cable snap the arm back out: the return is where the cuff controls the joint, so ride it over two seconds.
What Are the Best Cable Internal Rotation Variations?
- Side-lying dumbbell internal rotation: gravity loads only part of the arc, an easier regression.
- Cable internal rotation at 90 degrees abduction: elbow raised to shoulder height, the harder overhead-position progression.
- Towel-elbow cable internal rotation: a rolled towel under the elbow shifts the work onto pure rotation.
- Half-kneeling cable internal rotation: the inside knee down locks the pelvis and removes trunk help.
- Band internal rotation: the same arc with a band anchored at elbow height, for warm-ups anywhere.
How Do You Progress the Cable Internal Rotation?
- Move up one plate on the stack once every set finishes at the top of the rep range with the elbow pinned.
- Work from 12 reps a side up to 20 before adding a plate.
- Add a fourth set once three sets of 20 stay clean on both sides.
- Hold the end position for three seconds, or slow the return to four, before the next plate.
How Should You Program the Cable Internal Rotation?
Use the cable internal rotation as a late accessory on an upper body day, or in a pressing warm-up, two to three times a week. Work 3 to 4 sets of 12 to 20 reps a side with 30 to 45 seconds between sides. Pair it set for set with external rotation so the cuff is trained in both directions. Start each set on your weaker side.