Upper Arms Exercise · Dumbbell

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Dumbbell One Arm Zottman Preacher Curl

Also known as: Db One Arm Zottman Preacher Curl, Dumbell One Arm Zottman Preacher Curl

Category

Upper Arms

Equipment

Dumbbell

Target

Biceps

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

The Zottman curl curls up with a supinated grip and lowers with a pronated one, training the biceps on the way up and the forearm extensors on the way down in a single rep. Doing it on a preacher bench, one arm at a time, adds strict isolation to an already efficient two-muscle-group movement. It's one of the more complete single exercises for total arm development below the elbow and above.

How to Do the Dumbbell One Arm Zottman Preacher Curl

1. Sit at a preacher curl bench holding a dumbbell in one hand with an underhand grip.
2. Rest your upper arm on the preacher pad, letting your arm fully extend.
3. Curl the dumbbell up toward your shoulder while your upper arm stays still.
4. At the top of the curl, rotate your wrist so your palm faces up.
5. Lower the dumbbell back down under control, rotating your wrist back to the start.
6. Continue for the target number of reps, then switch arms.

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 Upper Arms exercises category.

Muscles Worked

The Dumbbell One Arm Zottman Preacher Curl primarily targets the Biceps, with Forearms as the primary synergist muscle group.

More Upper Arms Exercises

Assisted Standing Triceps Extension (with Towel) Assisted · Triceps Assisted Triceps Dip (kneeling) Leverage Machine · Triceps Band Alternating Biceps Curl Band · Biceps Band Close-Grip Push-Up Band · Triceps Band Concentration Curl Band · Biceps Band One Arm Overhead Biceps Curl Band · Biceps

More Biceps Exercises

Barbell Alternate Biceps Curl Barbell · Biceps Barbell Biceps Curl (with Arm Blaster) Barbell · Biceps Barbell Curl Barbell · Biceps Barbell Drag Curl Barbell · Biceps Barbell Lying Preacher Curl Barbell · Biceps Barbell Preacher Curl Barbell · Biceps

Equipment Alternatives

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

Biceps Leg Concentration Curl Body Weight · Biceps Barbell Alternate Biceps Curl Barbell · Biceps Cable Close Grip Curl Cable · Biceps EZ Bar Seated Close Grip Concentration Curl EZ Barbell · Biceps

FAQ

What muscles does the Dumbbell One Arm Zottman Preacher Curl work?

The Dumbbell One Arm Zottman Preacher Curl primarily targets the biceps as the primary agonist. The forearms acts as the primary supporting muscle group during force transmission. 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 Zottman Preacher Curl?

The Dumbbell One Arm Zottman Preacher 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 Zottman Preacher 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 Zottman Preacher 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 Zottman Preacher Curl?

If you don't have access to a dumbbell, the Biceps Leg Concentration Curl targets the same biceps 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.