TETSUBiceps Pull-Up vs Weighted Seated Bicep Curl (On Stability Ball)
The Biceps Pull-Up and the Weighted Seated Bicep Curl (On Stability Ball) both train the biceps as their primary muscle. The Biceps Pull-Up is bodyweight-based (a bar, rings or a station) while the Weighted Seated Bicep Curl (On Stability Ball) uses a medicine ball. Here is how they compare and when to pick each.
Side-by-side comparison
| Biceps Pull-Up | Weighted Seated Bicep Curl (On Stability Ball) | |
|---|---|---|
| Primary muscle | biceps | biceps |
| Body part | upper arms | upper arms |
| Supporting muscles | forearms and shoulders | forearms |
| Equipment | bodyweight | medicine ball |
| Steps in our guide | 4 | 6 |
How each one starts
Biceps Pull-Up — first steps
- Hang from a pull-up bar with your palms facing away from you and your hands shoulder-width apart.
- Engage your core and pull yourself up by bending your elbows, bringing your chest towards the bar.
Weighted Seated Bicep Curl (On Stability Ball) — first steps
- Sit on a stability ball with your feet flat on the ground and your back straight.
- Hold a medicine ball with an underhand grip, palms facing up, and let your arms hang down by your sides.
Full step-by-step guides are linked below.
Which should you choose?
The Biceps Pull-Up needs only a sturdy bar, rings or a station and scales through leverage, tempo and reps. The Weighted Seated Bicep Curl (On Stability Ball) suits explosive, power-focused reps. 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 biceps adapting.
Full form guides
Common questions
Is the Biceps Pull-Up better than the Weighted Seated Bicep Curl (On Stability Ball)?
Neither is universally better — both train the biceps as the primary mover. The Biceps Pull-Up needs only a sturdy bar, rings or a station and scales through leverage, tempo and reps, while the Weighted Seated Bicep Curl (On Stability Ball) suits explosive, power-focused reps. Choose based on your equipment and which movement you can progress consistently.
Can I do both the Biceps Pull-Up and the Weighted Seated Bicep Curl (On Stability Ball) in the same program?
Yes, but usually not in the same session — they overlap heavily on the biceps. 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 Biceps Pull-Up and the Weighted Seated Bicep Curl (On Stability Ball) work the same muscles?
The primary muscle is the same: the biceps. Supporting muscles differ slightly — forearms and shoulders for the Biceps Pull-Up versus forearms for the Weighted Seated Bicep Curl (On Stability Ball).
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.