Dumbbell Standing One Arm Reverse Curl exercise animation (Male)

Dumbbell Standing One Arm Reverse Curl

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

The dumbbell standing one arm reverse curl is a single-arm forearm and elbow-flexor exercise that uses a pronated (palms-down) grip to primarily target the brachioradialis, with the biceps brachii and brachialis assisting. Working one arm at a time, it builds forearm and grip strength while letting you focus on clean, controlled flexion on each side.

How to do the Dumbbell Standing One Arm Reverse Curl

  1. 1Stand tall holding a dumbbell in one hand with an overhand grip, palm facing back toward your thigh and the dumbbell resting against the front of your leg.
  2. 2Set your feet about shoulder-width apart, brace your core, and let your working arm hang fully extended with your elbow close to your side.
  3. 3Keeping your upper arm fixed against your torso, curl the dumbbell upward by bending only at the elbow, maintaining the overhand grip throughout.
  4. 4Continue lifting until your forearm is near vertical and you feel your forearm and elbow flexors fully contract.
  5. 5Pause briefly at the top, keeping your wrist straight and the back of your hand facing the ceiling.
  6. 6Lower the dumbbell under control back to the starting position, resisting gravity the whole way down until your arm is fully extended.
  7. 7Complete all reps on one arm, then switch the dumbbell to the other hand and repeat.

Form tips

  • Keep your wrist neutral and firm so the back of your hand stays in line with your forearm rather than dropping or breaking back.
  • Use a slow, controlled tempo, especially on the way down, since the reverse grip is weaker than a standard curl.
  • Pin your upper arm against your side to isolate the elbow flexors and stop your shoulder from helping.
  • Start lighter than you would for a standard curl; the pronated grip recruits the brachioradialis and forearm more, so you cannot lift as much.
  • Brace your core and stand still so your free hand and torso aren't used to generate momentum.

Common mistakes

  • Swinging the torso or using body momentum to lift the dumbbell, which shifts work off the target muscles and strains the lower back.
  • Letting the elbow drift forward or the upper arm swing, which turns it into a front-raise-style cheat and reduces tension on the forearm and biceps.
  • Letting the wrist bend or curl up as you lift, which loads the wrist joint instead of the brachioradialis and can cause strain.
  • Using too heavy a weight, which forces you to abandon the pronated grip and clean form to complete reps.
  • Dropping the dumbbell quickly on the way down, wasting the eccentric portion that builds much of the forearm strength.

Frequently asked questions

What muscles does the dumbbell standing one arm reverse curl work?

It primarily targets the brachioradialis in the forearm, with the biceps brachii and brachialis assisting. The pronated, palms-down grip emphasizes the forearm and brachialis more than a standard supinated curl.

Why use a reverse grip instead of a regular curl?

Turning the palm down shifts emphasis onto the brachioradialis and brachialis, building forearm and elbow strength and a thicker-looking upper forearm. It also trains grip stability that a standard underhand curl works less directly.

Why is the reverse curl harder and why should I use less weight?

The pronated grip puts the biceps at a mechanical disadvantage, so the weaker brachioradialis and brachialis do more of the work. Expect to use noticeably less weight than your standard dumbbell curl and prioritize control over load.

Is the dumbbell standing one arm reverse curl good for beginners?

Yes. Working one arm at a time keeps the movement simple, fixes side-to-side imbalances, and lets you watch your form. Start with a light dumbbell and focus on a fixed elbow and a straight wrist.

How many sets and reps should I do?

For forearm and arm development, 3 to 4 sets of 10 to 15 reps per arm works well. Keep the weight light enough to maintain a strict pronated grip and full range of motion.

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