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Dumbbell One-Arm Shoulder Press exercise demonstration - starting position (step 1 of 2)
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Step-by-step demonstration of the Dumbbell One-Arm Shoulder Press exercise showing proper form and technique

Dumbbell One-Arm Shoulder Press

Target Muscles

Primary:
Secondary:

Equipment Required

Exercise Type

Weight & Reps

How To Do

Stand with your feet shoulder-width apart, holding a dumbbell at shoulder height in one hand and your opposite hand on your hip. Press the dumbbell overhead until your arm is fully extended, keeping your core engaged and wrist straight, then lower it back to shoulder height with control. Switch arms after completing your repetitions.

Step-by-Step Instructions

  1. Begin by standing upright with your feet shoulder-width apart, holding a dumbbell in one hand at shoulder height. Keep your core engaged and your back straight.
  2. Place your opposite hand on your hip for stability.
  3. Press the dumbbell upward by extending your arm fully until it is straight above your head. Ensure your wrist remains stable and aligned with your forearm.
  4. Pause briefly at the top of the movement, ensuring your arm is fully extended and your shoulder is engaged.
  5. Slowly lower the dumbbell back to the starting position at shoulder height, maintaining control throughout the descent.
  6. Repeat for the desired number of repetitions, then switch arms and repeat the exercise on the other side.

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Frequently Asked Questions

What muscles does the Dumbbell One-Arm Shoulder Press work?
The Dumbbell One-Arm Shoulder Press primarily targets the shoulder muscles, specifically the deltoids. It also engages the triceps during the pressing phase and activates the core, especially the abs, to maintain stability while pressing one arm at a time.
Do I need any special equipment for the Dumbbell One-Arm Shoulder Press?
You only need a single dumbbell to perform this exercise, making it suitable for both gym and home workouts. If you don’t have a dumbbell, you can use a kettlebell, a filled water bottle, or any weight of similar size and shape as an alternative.
Is the Dumbbell One-Arm Shoulder Press good for beginners?
Yes, beginners can safely perform this exercise as long as they start with a light dumbbell and focus on proper form. Keep the movement slow and controlled, avoid locking the elbow abruptly at the top, and maintain good posture to build strength gradually.
What are common mistakes to avoid in the Dumbbell One-Arm Shoulder Press?
Common mistakes include arching the lower back, letting the wrist bend excessively, and using momentum instead of controlled movement. To avoid these errors, engage your core, keep your wrist aligned with your forearm, and press the weight up smoothly without jerking.
How many sets and reps should I do for the Dumbbell One-Arm Shoulder Press?
For strength, aim for 3–4 sets of 6–8 reps per arm using a challenging weight. For muscle endurance or toning, perform 3 sets of 10–15 reps per arm with a moderate weight and focus on maintaining consistent form throughout.
Are there any safety tips for the Dumbbell One-Arm Shoulder Press?
Always warm up your shoulder joints before starting to reduce the risk of strain. Keep your core tight, avoid leaning too far to one side, and choose a weight that allows you to complete reps with control rather than pushing to failure with poor form.
What are good variations of the Dumbbell One-Arm Shoulder Press?
You can try the seated one-arm shoulder press to reduce lower back strain or the Arnold press variation to increase range of motion. For added core challenge, perform the exercise standing on one leg or use a resistance band instead of a dumbbell.