one arm dumbbell rows muscles worked

"One-Arm Dumbbell Rows: Targeted Muscles & Benefits"

By Mark AndersonFebruary 21, 2026

The one-arm dumbbell row is a versatile and effective exercise that targets multiple muscle groups, making it a staple in many workout routines. This compound movement not only helps build strength but also improves functional movements and stability. Let's delve into the muscles worked during this exercise and how you can optimize its benefits.

Primary Muscles Worked

The one-arm dumbbell row primarily targets the muscles of the back, specifically the lats, rhomboids, and traps. These are the main muscles responsible for moving and stabilizing the shoulder blades and arms.

Latissimus Dorsi (Lats)

The lats are the largest muscle group in the back, responsible for the "V" shape in the upper body. They initiate the rowing motion, pulling the dumbbell towards your torso. To maximize lat engagement, focus on squeezing your shoulder blades together at the top of the movement.

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Rhomboids

The rhomboids are a pair of muscles that run vertically along the spine, between the shoulder blades. They retract the shoulder blades, bringing them together, and are heavily involved in the one-arm dumbbell row. To emphasize rhomboid activation, focus on pinching your shoulder blades together at the end of the movement.

Trapezius (Traps)

The traps are a large, superficial muscle group that covers the neck and shoulders. They assist in the rowing motion, helping to stabilize the shoulder girdle and maintain proper form. To engage the traps, keep your neck neutral and avoid excessive forward head movement during the exercise.

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Secondary Muscles Worked

While the one-arm dumbbell row primarily targets the back muscles, it also engages several secondary muscle groups, making it a full-body exercise.

Biceps Brachii

The biceps are involved in the elbow flexion that occurs during the rowing motion. To reduce bicep involvement and emphasize back engagement, focus on using a neutral grip (palms facing each other) instead of an underhand grip (palms facing you).

Forearm Muscles

The forearms, specifically the brachioradialis and brachialis, are engaged to stabilize the dumbbell and control the movement. To increase forearm activation, try using a heavier weight or performing the exercise with a pause at the bottom of the movement.

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Core Muscles

The core muscles, including the rectus abdominis, obliques, and lower back, are engaged to maintain stability and prevent rotation during the exercise. To further activate the core, try performing the one-arm dumbbell row on a stability ball or with a cable row machine.

Progression and Variations

To continually challenge your muscles and prevent plateaus, consider incorporating progressions and variations into your one-arm dumbbell row routine.

Progressions: Increase the weight of the dumbbell, perform the exercise with a single leg raised, or add a pause at the bottom of the movement.
Variations:
- Inverted row using a barbell or suspension trainer
- Pendlay row
- Seated cable row

By incorporating these progressions and variations, you can continue to challenge your muscles and improve overall strength and functionality.

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Common Mistakes and How to Avoid Them

To maximize the benefits of the one-arm dumbbell row and avoid injury, it's essential to be aware of common mistakes and how to correct them.

Mistake	Correction
Excessive forward head movement	Keep your neck neutral and maintain a straight line from your ears to your shoulders
Rounding the lower back	Engage your core and maintain a neutral spine throughout the movement
Using momentum to lift the weight	Focus on controlled, smooth movements and avoid swinging the dumbbell

By being mindful of these common mistakes and making the necessary corrections, you can ensure that you're performing the one-arm dumbbell row safely and effectively.

The one-arm dumbbell row is a powerful exercise that targets multiple muscle groups, making it an essential addition to any workout routine. By understanding the muscles worked, incorporating progressions and variations, and avoiding common mistakes, you can maximize the benefits of this exercise and continue to improve your strength and functionality. So grab a dumbbell and start reaping the rewards of this versatile and effective movement!