TETSUBand Reverse Fly vs Cable Standing Shoulder External Rotation
The Band Reverse Fly and the Cable Standing Shoulder External Rotation both train the delts as their primary muscle. The Band Reverse Fly uses a band while the Cable Standing Shoulder External Rotation uses a cable. Here is how they compare and when to pick each.
Side-by-side comparison
| Band Reverse Fly | Cable Standing Shoulder External Rotation | |
|---|---|---|
| Primary muscle | delts | delts |
| Body part | shoulders | shoulders |
| Supporting muscles | upper back and trapezius | rotator cuff and trapezius |
| Equipment | band | cable |
| Steps in our guide | 6 | 6 |
How each one starts
Band Reverse Fly — first steps
- Attach the band to a stationary object at chest height.
- Stand with your feet shoulder-width apart and hold the band with both hands in front of you.
Cable Standing Shoulder External Rotation — first steps
- Stand with your feet shoulder-width apart and your knees slightly bent.
- Hold the cable handle with your arm extended in front of you, parallel to the ground.
Full step-by-step guides are linked below.
Which should you choose?
The Band Reverse Fly gives accommodating resistance that peaks at the top of the range. The Cable Standing Shoulder External Rotation keeps constant tension on the muscle through the whole range of motion. 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 Band Reverse Fly better than the Cable Standing Shoulder External Rotation?
Neither is universally better — both train the delts as the primary mover. The Band Reverse Fly gives accommodating resistance that peaks at the top of the range, while the Cable Standing Shoulder External Rotation keeps constant tension on the muscle through the whole range of motion. Choose based on your equipment and which movement you can progress consistently.
Can I do both the Band Reverse Fly and the Cable Standing Shoulder External 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 Band Reverse Fly and the Cable Standing Shoulder External Rotation work the same muscles?
The primary muscle is the same: the delts. Supporting muscles differ slightly — upper back and trapezius for the Band Reverse Fly versus rotator cuff and trapezius for the Cable Standing Shoulder External 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.