TETSUBarbell Skier vs Dumbbell Lying External Shoulder Rotation
The Barbell Skier and the Dumbbell Lying External Shoulder Rotation both train the delts as their primary muscle. The Barbell Skier uses a barbell while the Dumbbell Lying External Shoulder Rotation uses a dumbbell. Here is how they compare and when to pick each.
Side-by-side comparison
| Barbell Skier | Dumbbell Lying External Shoulder Rotation | |
|---|---|---|
| Primary muscle | delts | delts |
| Body part | shoulders | shoulders |
| Supporting muscles | triceps and core | rotator cuff and triceps |
| Equipment | barbell | dumbbell |
| Steps in our guide | 5 | 5 |
How each one starts
Barbell Skier — first steps
- Stand with your feet shoulder-width apart and hold a barbell in front of your thighs with an overhand grip.
- Bend your knees slightly and hinge forward at the hips, keeping your back straight and chest up.
Dumbbell Lying External Shoulder Rotation — first steps
- Lie on your side on a flat bench with your upper arm against your side and your elbow bent 90 degrees.
- Hold a dumbbell in your hand with your palm facing down.
Full step-by-step guides are linked below.
Which should you choose?
The Barbell Skier lets you load the heaviest weights and progress in small, steady jumps. The Dumbbell Lying External Shoulder Rotation works each side independently and demands more stabilizer control. If your gym has both options, neither is a wrong choice: pick the one that feels strongest through a full range, and swap after 6 to 8 weeks to keep the delts adapting.
Full form guides
Common questions
Is the Barbell Skier better than the Dumbbell Lying External Shoulder Rotation?
Neither is universally better — both train the delts as the primary mover. The Barbell Skier lets you load the heaviest weights and progress in small, steady jumps, while the Dumbbell Lying External Shoulder Rotation works each side independently and demands more stabilizer control. Choose based on your equipment and which movement you can progress consistently.
Can I do both the Barbell Skier and the Dumbbell Lying External Shoulder Rotation in the same program?
Yes, but usually not in the same session — they overlap heavily on the delts. A common setup is one as your main movement and the other on a second training day, or alternating them block by block.
Do the Barbell Skier and the Dumbbell Lying External Shoulder Rotation work the same muscles?
The primary muscle is the same: the delts. Supporting muscles differ slightly — triceps and core for the Barbell Skier versus rotator cuff and triceps for the Dumbbell Lying External Shoulder Rotation.
Track it in Tetsu
Tetsu tracks both movements separately, keeps your PRs per exercise, and tells you which one is actually progressing. Free to start.