Dumbbell Shoulder Internal Rotation at 90 Abduction

Description

The dumbbell shoulder internal rotation at 90 abduction is a rotator cuff exercise. With the upper arm parallel to the floor, internal rotation strengthens the subscapularis and adds resilience to the shoulder joint.

Muscle Group

Equipment Required

Dumbbell Shoulder Internal Rotation at 90 Abduction Instructions

  1. Lie on your back on a bench or the floor.
  2. Hold a dumbbell in one hand with the upper arm flat against the surface.
  3. The upper arm should be at 90 degrees from your body in a T position.
  4. Bend the elbow to 90 degrees so the forearm is vertical.
  5. Brace the core and keep the upper arm in place.
  6. Rotate the forearm down toward the floor by internally rotating the shoulder.
  7. Stop just before the dumbbell touches the floor.
  8. Slowly rotate back up to vertical and repeat then switch arms.

Dumbbell Shoulder Internal Rotation at 90 Abduction Form & Visual

Dumbbell Shoulder Internal Rotation at 90 Abduction

Dumbbell Shoulder Internal Rotation at 90 Abduction Benefits

  • Strengthens the subscapularis and other rotator cuff muscles.
  • Builds shoulder stability at 90 degrees of abduction.
  • Improves shoulder health and overhead press readiness.
  • Helps prevent common shoulder injuries.
  • Trains an often neglected portion of the rotator cuff.
  • Light loads with strict form deliver best results.

Dumbbell Shoulder Internal Rotation at 90 Abduction Muscles Worked

  • Subscapularis
  • Pectoralis major
  • Anterior deltoid

Dumbbell Shoulder Internal Rotation at 90 Abduction Variations & Alternatives

  • Cable Internal Rotation
  • Side Lying Internal Rotation
  • External Rotation
  • Cuban Press