Lower Arms Exercise · Dumbbell

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Dumbbell One Arm Wrist Curl

Also known as: Db One Arm Wrist Curl, Dumbell One Arm Wrist Curl

Category

Lower Arms

Equipment

Dumbbell

Target

Forearms

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Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.

Working one wrist at a time isolates the forearm flexors fully on that side, letting the weight and range be tailored precisely to a weaker or less developed forearm. It's a small, targeted movement — the wrist has a short range of motion, so reps tend to be higher and the weight lower than most other dumbbell work. Grip strength built here carries over directly to pulling exercises elsewhere in a program.

How to Do the Dumbbell One Arm Wrist Curl

1. Sit on a bench or chair with your feet planted on the floor.
2. Hold a dumbbell in one hand with an underhand grip, resting your forearm on your thigh.
3. Let your wrist extend, allowing the dumbbell to roll down toward your fingers.
4. Curl your wrist back up under control, bringing the dumbbell toward your forearm.
5. Continue for the target number of reps, then switch hands.

Biomechanical & Joint Load Cues

Single-joint elbow flexion isolated in the sagittal plane. Focuses mechanical load on biceps brachii (long and short heads) and brachialis with minimal torso swinging.

Common Mechanical Mistakes & Form Errors to Avoid

• Swinging Hips & Lower Back: Using momentum from the hips to swing the weight upward eliminates the initial concentric overload on the biceps.
• Drifting Elbows Forward: Allowing elbows to travel forward past the ribs recruits the anterior deltoids and takes tension off the biceps apex.
• Dropping the Eccentric Phase: Letting the weight fall quickly without resistance wastes 50% of the muscle-building stimulus from eccentric microtrauma.

Proper Breathing Patterns & Core Engagement

Inhale on controlled lowering (2-3s eccentric); exhale on elbow contraction to peak tension.

Injury Modification & Joint Safety

Lifters with distal biceps tendinopathy or golfer's elbow (medial epicondylitis) should use neutral-grip hammer curls or EZ-bars to reduce wrist pronation torque. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Lower Arms exercises category.

Muscles Worked

The Dumbbell One Arm Wrist Curl primarily targets the Forearms, with Biceps as the primary synergist muscle group, along with the Brachialis.

More Lower Arms Exercises

Band Reverse Wrist Curl Band · Forearms Band Wrist Curl Band · Forearms Barbell Palms Down Wrist Curl Over A Bench Barbell · Forearms Barbell Palms Up Wrist Curl Over A Bench Barbell · Forearms Barbell Revers Wrist Curl V. 2 Barbell · Forearms Barbell Reverse Wrist Curl Barbell · Forearms

More Forearms Exercises

Barbell Standing Back Wrist Curl Barbell · Forearms Barbell Wrist Curl Barbell · Forearms Barbell Wrist Curl V. 2 Barbell · Forearms Cable Reverse Wrist Curl Cable · Forearms Cable Standing Back Wrist Curl Cable · Forearms Cable Wrist Curl Cable · Forearms

Equipment Alternatives

Don't have dumbbell? These target the same forearms with different equipment.

Modified Push Up To Lower Arms Body Weight · Forearms Barbell Standing Back Wrist Curl Barbell · Forearms Cable Reverse Wrist Curl Cable · Forearms Kettlebell Alternating Hang Clean Kettlebell · Forearms

FAQ

What muscles does the Dumbbell One Arm Wrist Curl work?

The Dumbbell One Arm Wrist Curl primarily targets the forearms as the primary agonist. Synergist assistance is provided by the biceps along with the brachialis. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.

What equipment do I need for the Dumbbell One Arm Wrist Curl?

The Dumbbell One Arm Wrist Curl is performed using a dumbbell. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.

What is the most common form mistake on the Dumbbell One Arm Wrist Curl?

The most frequent error is swinging hips & lower back: Using momentum from the hips to swing the weight upward eliminates the initial concentric overload on the biceps.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.

How many sets and reps should I perform on the Dumbbell One Arm Wrist Curl?

For muscle growth and density, execute 3 to 4 working sets of 10 to 15 controlled repetitions with 60 seconds rest, emphasizing a deep stretch and deliberate peak contraction on every rep.

What's a good alternative to the Dumbbell One Arm Wrist Curl?

If you don't have access to a dumbbell, the Modified Push Up To Lower Arms targets the same forearms using body weight instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.