Single Arm Dumbbell Forearm Rotation
Also known as: dumbbell pronation supination
In SetGrip: Dumbbell Forearm Rotation (Single Arm)
Seated with your elbow bent at ninety degrees and tucked to your side, one dumbbell rotates through the full pronation-to-supination arc, the complete cycle its lying siblings split into separate exercises. An off-center grip with the hand near one end of the handle multiplies leverage without adding weight. Work each arm alone so the stronger side cannot set the tempo.
How to do the Single Arm Dumbbell Forearm Rotation
- Sit on a bench with your back straight and hold a dumbbell in one hand, resting it on your thigh.
- Raise the dumbbell up to shoulder height, keeping your elbow close to your body.
- Rotate your forearm outward, away from your body, while keeping your upper arm stationary.
- Pause for a moment at the top, then slowly rotate your forearm back to the starting position.
- Repeat for the desired number of repetitions, then switch to the other arm.
Tip: Use high reps, 15 to 25, and a light weight you can move through the full range with control.
Muscles worked
Common mistakes
- Moving the elbow — the forearm should rest on the bench or your thigh and only the hand should turn; if the elbow lifts, you are using the biceps.
- Rushing through the range — go slowly and pause at each end so the small forearm muscles do the work rather than momentum.
- Going too heavy — these movements use small muscles, so a light dumbbell or plate is plenty; the goal is a burn, not a max.
- Bar rolling off the fingertips — on finger curls let it go to the second knuckle and no further, then curl it back into the palm.
Where it fits in a workout
Forearm work goes at the very end of a session after all gripping is done. Superset finger curls with reverse wrist curls.
How many sets, how heavy and how hard: see what the ACSM position stands support.
Variations and alternatives
When to talk to someone
- Chest discomfort, feeling faint or lightheaded, or trouble breathing during or after exercise can be signs of a heart attack. In the US, call 911 right away; elsewhere, call your local emergency number.
- Heart, metabolic or kidney disease, or symptoms like these when you are active: talk to your doctor before you start or step up training.
- Pregnant: ask your obstetric care provider which exercise suits you.
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More exercises
Sources
- ACSM position stand on exercise quantity and quality (Garber et al., 2011)
- ACSM preparticipation health screening (Riebe et al., 2015)
- ACOG Committee Opinion No. 804 on exercise in pregnancy (2020)
- CDC: About Heart Attack Symptoms, Risk, and Recovery (2024)
Sources checked on October 17, 2026. Full citations are in the exercise library.
Animation and exercise data: ExerciseDB, licensed to SetGrip. General information, not medical or coaching advice.