Loop Band Shoulder Internal Rotation at 90°
Loop Band Shoulder Internal Rotation at 90° is an intermediate rotator cuff exercise that strengthens the subscapularis and anterior shoulder muscles. By maintaining an elevated arm position, this movement improves shoulder stability specifically for overhead athletes and throwing mechanics.
Iridium programs this movement according to your warmup preferences, using it to prepare the shoulder stabilizers for heavy pressing rather than for generating hypertrophy volume. To ensure this remains a priming exercise, the system monitors your RPE feedback to keep intensity low and prevent fatigue accumulation in the rotator cuff before your main lifts.
Form Cues
- Keep your elbow aligned directly with your shoulder height throughout the set
- Maintain a strict 90-degree angle at the elbow joint
- Rotate your forearm downward and inward until it is parallel to the floor
- Squeeze your core to prevent your torso from twisting
- Control the release phase slowly to maximize stability
- Don't let your elbow drop below shoulder height
- Don't hike your shoulder up towards your ear
- Don't use your body weight or hips to generate momentum
- Don't flex or curl your wrist; keep it neutral
- Don't rush the repetition
Common Mistakes
- Dropping the elbow
- Shrugging the shoulder
- Rotating the torso
- Curling the wrist
- Using excessive resistance
Muscles Worked
This exercise primarily targets the subscapularis, a key rotator cuff muscle responsible for internal rotation, while heavily engaging the anterior deltoid and upper pectorals for stability. Performing this movement with the arm abducted to 90 degrees specifically strengthens the shoulder capsule in a functional position common to throwing and overhead pressing.
Primary
Secondary
Get Personalized Coaching for Loop Band Shoulder Internal Rotation at 90°
Don't guess your way through weights or workouts. Download Iridium for automatic, AI-powered coaching that adapts to your recovery and goals.