Description
A seated exercise that targets the rotator cuff muscles in the shoulders, performed with a dumbbell.
How to Do Dumbbell Seated External Rotation
- 1Setup
Sit on a flat bench or chair with your feet flat on the floor, holding a light dumbbell in one hand with an overhand grip.
- 2Setup
Rest the elbow of the working arm on your inner thigh, with your upper arm perpendicular to the floor and forearm parallel to the floor, forming a 90-degree angle. The dumbbell should be pointing straight up.
- 3
Keeping your elbow fixed on your thigh, slowly rotate your forearm outwards, lowering the dumbbell towards the floor until your forearm is parallel to the floor.
- 4
Pause briefly at the bottom, then slowly reverse the motion, rotating your forearm back up to the starting position.
- 5
Squeeze your rotator cuff at the top of the movement, then repeat for the desired number of repetitions before switching arms.
Tips
- Focus on slow, controlled movement throughout the entire range of motion, especially during the eccentric (lowering) phase, to maximize muscle engagement and minimize momentum.
- Ensure your elbow remains firmly planted against your thigh throughout the exercise to properly isolate the external rotators and prevent compensatory movements from other muscles.
- Use a very light dumbbell for this exercise; the rotator cuff muscles are small and prone to injury with excessive weight, so prioritize form over load.
- Breathe out as you externally rotate the dumbbell downwards, and inhale as you slowly return to the starting position, maintaining core stability.
Common Mistakes
- ×Using a dumbbell that is too heavy compromises form and can lead to shoulder impingement; decrease the weight significantly to ensure proper isolation and control.
- ×Allowing the upper arm to lift off the thigh or move forward reduces the isolation of the rotator cuff; keep the upper arm stationary and only move the forearm.
- ×Rushing the movement reduces time under tension and effectiveness; perform each repetition slowly and with deliberate control, especially during the lowering phase.
Variations
Dumbbell Seated Single Arm Front Raise
Master the seated single arm front raise to build strong, sculpted shoulders. This isolation exercise targets the anterior deltoid effectively and safely.
Dumbbell Seated External Shoulder Rotation
Strengthen your posterior deltoids and rotator cuff with the Dumbbell Seated External Shoulder Rotation.
Dumbbell Seated Bent Over Alternate Rear Delt Fly
Target and sculpt your rear deltoids with the seated bent-over alternate dumbbell rear delt fly.
Dumbbell Alternate Lateral Raise
Build wider, stronger shoulders with the Dumbbell Alternate Lateral Raise. This isolation exercise targets the lateral deltoids for improved shoulder cap
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Dumbbell Complex Push-up Row Clean and Press
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Kettlebell Around Head Rotation
Build shoulder mobility and stability by rotating a kettlebell around your head in a controlled circular path.
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