Dumbbell Zottman Curl
The Zottman curl is a dumbbell curl that changes grip mid-rep: you curl up with your palms facing up, turn your palms down at the top, and bring the weights down with an overhand grip. It works the biceps on the way up and asks the forearm muscles (brachioradialis and wrist extensors) to control the overhand way down, with the brachialis working throughout.
Also called: Zottman Curl, Rotating Curl · Equipment: dumbbell · Pattern: pull
Step by step
- Stand tall with your feet hip-width apart and a dumbbell in each hand, arms straight by your sides and palms facing forward.
- Brace your trunk and set your elbows by your sides, just in front of your hips.
- Curl both dumbbells up, moving only at the elbows, until your forearms are close to vertical.
- At the top, turn your wrists so your palms face away from you in an overhand grip.
- Bring the dumbbells down slowly with your palms facing down and your wrists straight, taking about two to three seconds.
- At the bottom, with your arms straight, turn your palms back to face forward, then start the next rep.
- After the last rep, let the dumbbells rest at your sides and set them down with a flat back.
- Palms up on the way up, palms down on the way down
- Turn your wrists at the top, not during the curl
- Slow and controlled on the way down
- Wrists straight, knuckles in line with your forearms
- Elbows pinned by your sides
In VALDA, these cues are one tap away on the exercise while you train.
What it trains
| Muscle | Role | Evidence |
|---|---|---|
| Brachialis | Prime mover | C |
| Brachioradialis | Prime mover | C |
| Biceps brachii: long head | Secondary | C |
| Biceps brachii: short head | Secondary | C |
| Forearm flexors | Stabiliser | D |
| Forearm extensors | Dynamic stabiliser | C |
Evidence grades: A = strong research base · B = good · C = limited · D = coaching consensus.
What goes wrong, and the fix
Turning the grip partway through the curl
Fix: Finish the curl first, then turn your palms down at the top.
Dropping the dumbbells on the overhand descent
Fix: Bring the dumbbells down slowly with palms down, controlling them the whole way.
Choosing the weight by the curl up
Fix: Use a weight you can bring down slowly with your palms facing down.
Wrists bending down on the descent
Fix: Hold your wrists straight, knuckles in line with your forearms.
Swinging to start each rep
Fix: Start each rep from straight, still arms with your torso upright.
What the research says
Muscle growthRehab & prehabGeneral fitnessSport performanceEndurance
- Load and reps — Research comparing loads finds muscle growth is similar across a wide range of loads when sets are taken close to failure. In the Zottman curl, the overhand descent sets the working weight, so loads sit well below a standard curl.
- Effort — Studies show sets that finish a few reps short of failure capture most of the growth benefit; true failure adds only a small extra effect.
- Eccentric work — A meta-analysis found eccentric training at high intensities built more strength and muscle mass than concentric training, largely because heavier loads can be handled on the way down. The Zottman's overhand descent is a controlled but lighter eccentric, so that research applies only indirectly.
- Volume — Research links more weekly sets for a muscle to more growth, with diminishing returns; about 10 or more hard sets a week has been associated with more growth than fewer than 5.
- The evidence gap — There is no direct research on the Zottman curl itself. Grip EMG research finds the biceps most active with the palms up; the idea that the overhand descent trains the forearms comes from coaching practice, not measurement.
Swap it mid-workout
With VALDA Pro, FLEX offers alternatives like these when you swap an exercise mid-workout.
Log the dumbbell zottman 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.