Exercise guide · evidence-graded

Dumbbell Wrist Curl

The dumbbell wrist curl bends the wrist upwards against a dumbbell, palm facing up, with the forearm resting on a bench or thigh. It isolates the wrist flexors on the palm side of the forearm, with the finger flexors helping to grip, one arm at a time.

Also called: DB Wrist Curl, Single-Arm Wrist Curl, Seated Dumbbell Wrist Curl, One-Arm Wrist Curl · Equipment: dumbbell · Pattern: pull

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How to do it

Step by step

  1. Sit at the end of a flat bench with a dumbbell in one hand, palm facing up.
  2. Rest that forearm along your thigh or the bench so your wrist and hand sit just past the edge.
  3. Turn your palm to the angle that feels most comfortable for your wrist, then keep it there for the set.
  4. Let the wrist bend back so your hand drops below the forearm, keeping a full grip on the handle.
  5. Keep the forearm pinned and curl the dumbbell up by bending only at the wrist, as far as it will go.
  6. Pause briefly at the top, then let the hand back down slowly into the stretch.
  7. Complete all reps, then switch arms.
Coaching cues
  • Forearm pinned, only the wrist moves
  • Slow down into the stretch
  • Curl your palm up towards you
  • Pause at the top
  • Set a comfortable palm angle, then keep it

In VALDA, these cues are one tap away on the exercise while you train.

Muscles worked

What it trains

MuscleRoleEvidence
Forearm flexors: wrist flexors (flexor carpi radialis / ulnaris, palmaris longus)Prime moverC
Forearm flexors: extrinsic finger flexors (flexor digitorum superficialis / profundus)SecondaryC
Forearm extensorsStabiliserD

Evidence grades: A = strong research base · B = good · C = limited · D = coaching consensus.

Common faults

What goes wrong, and the fix

Forearm lifting off the support

Fix: Pin the forearm flat on your thigh or the bench and move only at the wrist.

Bouncing out of the bottom

Fix: Let the hand down slowly and change direction under control.

Short reps near the top

Fix: Let the wrist bend fully back before each curl, then curl as high as it goes.

Grip opening at the bottom

Fix: Keep a full grip on the handle throughout the set.

Load too heavy to control

Fix: Choose a weight you can curl through the full range with the forearm still.

Programming

What the research says

Muscle growth · first choiceRehab & prehab · first choiceGeneral fitnessSport performanceEndurance

  • Research base — There is no direct research comparing set and rep schemes for wrist-curl exercises. The notes below come from general resistance-training research.
  • Load and effort — Research finds muscle growth is similar across a wide range of loads when sets are taken close to failure, and reaching true failure adds only a small extra effect. Local muscular endurance tends to favour lighter loads and higher reps.
  • Volume — Studies link more weekly sets for a muscle to more growth, with diminishing returns; around 10 or more weekly sets has been associated with more growth than fewer than 5.
  • Isolation work — A small trial in untrained men found single-joint and multi-joint upper-body training gave similar strength and size gains in the targeted muscles. Many lifters add direct forearm work alongside pulling and gripping exercises.
  • Grip angle — An EMG study found forearm rotation changes which wrist flexors are most active: the thumb-side flexor is most active with the palm up. This describes activation, not growth.
Alternatives · VALDA FLEX

Swap it mid-workout

With VALDA Pro, FLEX offers alternatives like these when you swap an exercise mid-workout.

Log the dumbbell wrist curl in VALDA, with these cues one tap away while you train and your history for it in one place.

General information about exercise technique, not medical advice. If you have an injury or a health condition, your healthcare provider is the right person to ask.