Dumbbell One Arm Kickback exercise animation (Male)

Dumbbell One Arm Kickback

Target muscle
Triceps Brachii
Equipment
Dumbbell
Body part
Upper Arms
Type
Strength

The dumbbell one arm kickback is an isolation exercise that targets the triceps brachii, training one arm at a time. Performed bent over with your upper arm fixed against your side, it emphasizes full extension and a strong contraction at the back of the upper arm, making it useful for building triceps definition and ironing out side-to-side strength imbalances.

How to do the Dumbbell One Arm Kickback

  1. 1Hold a dumbbell in one hand and hinge forward at the hips until your torso is roughly parallel to the floor.
  2. 2Brace your free hand on a bench or your thigh for support and keep your back flat and your core tight.
  3. 3Pin your working upper arm against your side so your elbow points up and the dumbbell hangs straight down.
  4. 4Keeping your upper arm still, extend your elbow to drive the dumbbell back until your arm is fully straight and in line with your torso.
  5. 5Squeeze your triceps hard at the top, holding the locked-out position for a brief moment.
  6. 6Lower the dumbbell under control back to the starting position without letting your upper arm drop.
  7. 7Complete all reps on one side, then switch the dumbbell to the other hand and repeat.

Form tips

  • Keep your upper arm parallel to the floor and locked against your side throughout the set so the movement comes only from your elbow.
  • Use a lighter weight than you would for compound triceps work, since this is a strict isolation movement that rewards control over load.
  • Pause and fully straighten your arm at the top of each rep to maximize the triceps contraction.
  • Exhale as you extend the dumbbell back and inhale as you return it to the start.

Common mistakes

  • Swinging the upper arm up and down instead of keeping it fixed, which uses momentum and takes tension off the triceps.
  • Failing to fully straighten the elbow at the top, which cuts the contraction short and limits the work done by the triceps.
  • Rounding the lower back while bent over, which puts unnecessary strain on the spine.
  • Going too heavy and jerking the weight, which turns a strict isolation rep into a sloppy partial movement.

Frequently asked questions

What muscles does the dumbbell one arm kickback work?

It isolates the triceps brachii, the muscle on the back of your upper arm responsible for straightening the elbow. The single-arm setup lets you focus on one side at a time.

How much weight should I use for triceps kickbacks?

Use a light to moderate dumbbell. Because the triceps work alone and the movement relies on a strict, fixed upper arm, lighter weight with full extension beats heavy weight with swinging.

Are dumbbell kickbacks good for beginners?

Yes. The one arm kickback is simple to learn and teaches you to feel the triceps contract. Start light, keep your upper arm still, and focus on fully straightening the elbow each rep.

How many sets and reps should I do?

As an isolation finisher, 2–3 sets of 10–15 reps per arm works well. Higher reps with controlled form suit this movement better than heavy, low-rep sets.

Why can't I feel my triceps during kickbacks?

Usually it's because the upper arm is moving. Keep it pinned against your side and parallel to the floor, then extend only at the elbow and squeeze at full lockout to feel the triceps work.

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