Dumbbell Standing One Arm Curl (over incline bench) exercise animation (Male)

Dumbbell Standing One Arm Curl (over incline bench)

Target muscle
Brachialis
Synergist muscles
Biceps Brachii, Brachioradialis
Equipment
Dumbbell
Body part
Upper Arms
Type
Strength

The dumbbell standing one arm curl over an incline bench is a single-arm elbow-flexion exercise that primarily targets the brachialis, with the biceps brachii and brachioradialis assisting. You stand and brace the back of your working arm against the incline bench pad, which locks the upper arm in place so the elbow does all the work. It's a strict isolation move for building the underlying brachialis and adding thickness to the upper arm.

How to do the Dumbbell Standing One Arm Curl (over incline bench)

  1. 1Set an incline bench to roughly 45–60° and stand behind it, facing the backrest.
  2. 2Hold a dumbbell in one hand and drape the back of that upper arm flat against the bench pad so your armpit sits near the top edge.
  3. 3Let the working arm hang straight down over the pad with the dumbbell at full stretch and your palm facing up.
  4. 4Brace your core and keep your upper arm pinned to the pad throughout the set.
  5. 5Curl the dumbbell up by flexing only at the elbow until your forearm is fully contracted.
  6. 6Squeeze the brachialis and biceps briefly at the top without letting your elbow drift off the pad.
  7. 7Lower the dumbbell under control back to a full stretch.
  8. 8Complete your reps, then switch the dumbbell to the other arm and repeat.

Form tips

  • Keep the back of your upper arm flat and motionless against the pad so the bench does its job of isolating the elbow flexors.
  • Lower the weight slowly through a full range of motion to keep tension on the brachialis on the way down.
  • Use a neutral-to-supinated grip and a weight light enough to curl strictly without swinging.
  • Keep your shoulder relaxed and down rather than shrugging to help start the rep.

Common mistakes

  • Letting the elbow slide up off the bench pad, which turns the strict curl into a shoulder-assisted movement and removes tension from the brachialis.
  • Using momentum or a body sway to fling the dumbbell up, which cheats the rep and reduces muscle engagement.
  • Cutting the range short by not lowering to a full stretch, which limits brachialis and biceps development.
  • Going too heavy and rounding or twisting the wrist, which strains the joint instead of loading the elbow flexors.

Frequently asked questions

What muscles does the dumbbell standing one arm curl over an incline bench work?

It primarily works the brachialis, the muscle under the biceps, with the biceps brachii and brachioradialis assisting. Bracing the arm over the bench isolates these elbow flexors.

Why brace the arm over the incline bench?

Pinning the back of your upper arm to the bench pad fixes the elbow in place so you can't swing or use your shoulder. That strict position forces the brachialis and biceps to do the work through a clean range of motion.

Is this curl good for beginners?

Yes. Working one arm at a time with the upper arm supported makes it easy to learn strict form, fix side-to-side imbalances, and feel the target muscle without cheating.

How many sets and reps should I do?

For arm size, 3–4 sets of 10–15 reps per arm with a controlled tempo works well. Use a weight you can curl strictly without your elbow lifting off the pad.

Related exercises