Dumbbell Shoulder Internal Rotation at 90 Abduction

Description

How to Do Dumbbell Shoulder Internal Rotation at 90 Abduction

1. 1
   Setup

   Lie on your side with the target arm's elbow bent 90 degrees and abducted 90 degrees from your torso, resting your upper arm on the ground or a small towel.

2. 2
   Setup

   Hold a light dumbbell with an overhand grip, with your forearm perpendicular to the floor. Support your head with your free hand or a pillow to maintain a neutral spine.

3. 3

   Slowly lower the dumbbell towards the ground by internally rotating your shoulder, keeping your elbow stationary and only allowing your forearm to move.

4. 4

   Once your forearm is parallel to the floor or slightly below, pause briefly, then slowly rotate your arm back up to the starting position, controlling the movement.

5. 5

   Exhale as you internally rotate the shoulder (lower the dumbbell) and inhale as you return to the starting position.

Tips

• Maintain a very light weight to prioritize rotator cuff engagement and avoid compensating with larger muscle groups.
• Keep the movement slow and controlled throughout the entire range of motion, focusing on the internal rotation of the humerus within the shoulder joint.
• Ensure your elbow remains perfectly still, acting as a pivot point; avoid letting it lift off the ground or move forward/backward.

Common Mistakes

• ×Using excessive weight causes the elbow to lift or the torso to twist; fix this by selecting a much lighter dumbbell that allows strict isolation of the shoulder rotation.
• ×Rushing the movement leads to momentum taking over; instead, perform each repetition with deliberate control, especially during the eccentric (lowering) phase.