Shoulders Exercise · Dumbbell

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Dumbbell One Arm Shoulder Press

Pressing overhead with one arm at a time forces the obliques and deep core to resist lateral flexion, since the torso wants to lean away from the loaded side. That anti-lean demand is a real training benefit a two-arm press doesn't offer. It also makes shoulder strength differences between sides obvious fast.

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Also known as: Db One Arm Shoulder Press, Dumbell One Arm Shoulder Press

Category

Shoulders

Equipment

Dumbbell

Target

Delts

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Exercise reference published by PlanWorkouts; see our editorial standards.

How to Do the Dumbbell One Arm Shoulder Press

1. Begin standing with feet shoulder-width apart, holding a dumbbell in one hand at shoulder level, palm facing forward.
2. Press the dumbbell straight up until your arm is fully extended overhead.
3. Hold briefly at the top, then lower the dumbbell back down under control.
4. Continue for the target number of reps, then switch arms.

Technique & Form Tips

For an overhead press, straighten the elbows as you move the arms upward and control the return. Match the grip, support and path to the demonstration. Other shoulder movements use different arm paths and should follow their own steps.

Common Mistakes to Avoid

• Excessive back arching: Engage your core to maintain a stable torso position while pressing.
• Using the wrong path: Follow the demonstrated path for the equipment and movement instead of forcing every variation into a barbell press.
• Insufficient core bracing: Stabilize your trunk before initiating the upward push.

How to Breathe During This Exercise

Keep breathing; for presses, breathe out as you press and in as you return.

Comfort and Control

Choose a load and range you can control. Stop if the movement causes pain. If discomfort persists, stop and ask a qualified professional about an appropriate exercise and range.

General guidance: Mayo Clinic on weight-training technique. Follow the specific movement steps above for this variation.

Muscles Worked

The Dumbbell One Arm Shoulder Press mainly targets your Delts, with your Triceps helping support the movement, along with your Upper Back.

More Shoulders Exercises

Band Front Lateral Raise Band · Delts Band Front Raise Band · Delts Band Reverse Fly Band · Delts Band Shoulder Press Band · Delts Band Standing Rear Delt Row Band · Delts Band Twisting Overhead Press Band · Delts

More Delts Exercises

Band Y-Raise Band · Delts Barbell Front Raise Barbell · Delts Barbell One Arm Snatch Barbell · Delts Barbell Rear Delt Raise Barbell · Delts Barbell Rear Delt Row Barbell · Delts Barbell Seated Behind Head Military Press Barbell · Delts

Equipment Alternatives

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

Barbell Seated Behind Head Military Press Barbell · Delts Cable Alternate Shoulder Press Cable · Delts Kettlebell Arnold Press Kettlebell · Delts Lever Military Press Leverage Machine · Delts

FAQ

What muscles does the Dumbbell One Arm Shoulder Press work?

The Dumbbell One Arm Shoulder Press mainly works your delts. It also helps strengthen your triceps and upper back. Using good, smooth form makes sure you work the right muscles and avoid unnecessary strain on your joints.

What equipment do I need for the Dumbbell One Arm Shoulder Press?

You do the Dumbbell One Arm Shoulder Press with a dumbbell. Make sure your equipment is set up safely before starting. If you work out at home or have limited gear, check out our alternative exercises below.

What form mistake should I watch for on the Dumbbell One Arm Shoulder Press?

One mistake to watch for is excessive back arching: Engage your core to maintain a stable torso position while pressing.. Use a comfortable range and a controlled return; reduce the load if you cannot maintain the demonstrated setup.

How many sets and reps should I perform on the Dumbbell One Arm Shoulder Press?

To build muscle size, aim for 3 to 4 sets of 8 to 12 reps with 90 to 120 seconds of rest. To build pure strength, focus on 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes of rest.

What's a good alternative to the Dumbbell One Arm Shoulder Press?

The Barbell Seated Behind Head Military Press trains your delts with barbell and a similar movement pattern. Review its form guide before substituting it, since setup and range of motion can differ.