Dumbbell One Arm Prone Hammer Curl
Dumbbell One Arm Prone Hammer Curl Exercise Description
The Dumbbell One Arm Prone Hammer Curl is a chest-supported curl performed face‑down on an incline bench to minimize body swing and focus on pure elbow flexion. Using a neutral (thumb‑up) grip shifts emphasis toward the brachialis and brachioradialis, with the biceps brachii contributing as an elbow flexor. The prone setup helps keep the upper arm vertical under the shoulder, reducing unintended shoulder movement and making the rep path more consistent. This variation is useful when you want strict control, steady tension through the range of motion, and a simple setup that limits momentum. Maintain a neutral spine and wrist throughout to direct the work to the elbow flexors and to keep forearm alignment clean.
- Muscle Groups: Biceps
- Target Muscles: Brachialis
- Assisting Muscles: Biceps Brachii - Short Head, Brachioradialis
- Stabilizing Muscles: Extensor Carpi Ulnaris, Flexor Carpi Radialis, Infraspinatus, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Arms, Upper Arms
- Body Surface: Front
- Body Symmetry: Unilateral
- Equipment: Dumbbell
- Exercise Patterns: Pull
- Exercise Type: Strength
- Functional Grouping: Elbow Flexors
- Joint Involvement: Single-joint
- Muscle Location: Lower Bicep
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Male
How To Do The Dumbbell One Arm Prone Hammer Curl Exercise
‘- Set an incline bench and lie prone with chest and abdomen supported; feet planted, head neutral, eyes toward the floor.
– Let the working arm hang straight below the shoulder; hold the dumbbell with a neutral (thumb‑up) grip.
– Lightly retract and depress the scapula on the working side; keep the upper arm vertical and still.
– Brace gently; keep the wrist neutral (no bending or twisting).
– Without swinging, flex the elbow to curl the dumbbell, bringing the thumb toward the front of the shoulder.
– Stop before the elbow drifts forward or the shoulder rolls; keep the torso and shoulder quiet.
– Lower the dumbbell under control until the elbow is nearly fully extended—avoid hyperextending or “locking out” hard.
– Maintain even rhythm and smooth motion; avoid shrugging, arching, or rotating.
– Switch arms and repeat with the same setup.
Dumbbell One Arm Prone Hammer Curl Tips
‘- Fully support your chest and abdomen on the incline bench with feet planted and head neutral, eyes toward the floor.
– Let the working arm hang straight below the shoulder and hold the dumbbell with a neutral, thumb‑up grip.
– Lightly retract and depress the shoulder blade on the working side to help keep the upper arm vertical and still.
– Brace gently and keep the wrist neutral—avoid bending or twisting as you curl.
– Start each rep by flexing only at the elbow, without swinging the arm or body.
– Curl until the thumb approaches the front of the shoulder, stopping before the elbow drifts forward.
– Keep the torso and shoulder quiet and avoid letting the shoulder roll during the curl.
– Lower the dumbbell under control until the elbow is nearly fully extended, avoiding hard lockout or hyperextension.
– Maintain a neutral spine while prone; avoid arching or rotating as you move.
– Use an even rhythm and smooth motion throughout, avoiding shrugging.
– When you switch arms, recreate the same setup and body position for consistent rep paths.
Dumbbell One Arm Prone Hammer Curl Beginner Introduction
The Dumbbell One Arm Prone Hammer Curl is a strict single‑arm curling movement performed while lying face‑down on an incline bench. With the chest and stomach resting on the pad, the working arm hangs under the shoulder, encouraging motion that comes mainly from bending the elbow rather than from swinging the torso. A thumbs‑up hand position emphasizes the elbow‑bending muscles of the arms, with strong involvement from both the biceps and the forearms. The bench support limits extra movement through the shoulders and trunk, giving the curl a very controlled, isolation‑style feel.
Because the upper arm stays underneath the shoulder, the path of the dumbbell stays more consistent from repetition to repetition. The spine and wrist remain in a natural position so the effort centers on the elbow joint and the forearm line stays straight. This setup suits lifters who want a curl variation with reduced momentum, even tension throughout the motion, and a straightforward bench‑and‑dumbbell arrangement that highlights pure arm strength.