FITBODY Exercise Library · Back
Single Arm Dumbbell Row
The single arm dumbbell row is one of the best back exercises for building real strength, better posture, and definition, using just one dumbbell. Here is exactly how to do a bent over row with proper form, plus how I program it for the women I coach.
How to Do a Single Arm Dumbbell Row
Think about leading with your elbow rather than pulling with your hand. That one cue shifts the work into your back instead of your arm, which is exactly where you want it.
What Muscles Does the Single Arm Dumbbell Row Work?
The single arm dumbbell row is a back exercise first. Your lats do most of the work, while your rear delts, biceps, forearms, and core assist to control the weight and keep you stable. In fact, research comparing rowing variations has found that single arm rows can produce strong trunk and core activation while keeping the load on your lower spine relatively low (Fenwick et al.). Because you train one side at a time, it also helps even out strength differences between your left and right, which is part of building balanced strength and a real body recomposition.
For women over 40, this kind of pulling strength does more than shape your back. Strength training has been shown to support bone density in postmenopausal women (Yun et al.), which matters more with every passing year.
See the full muscle breakdown
- Latissimus Dorsi (Lats): the primary mover and the largest muscle in your back, responsible for pulling the weight and creating width and shape.
- Rhomboids: sit between your shoulder blades and retract them, which improves posture and upper back definition.
- Trapezius: spans your upper and middle back to assist scapular retraction and support a strong, upright posture.
- Rear Deltoids: the back of your shoulders, which help pull the weight and round out shoulder shape.
- Biceps and Forearms: assist with the pull and build grip strength that carries over to daily life.
- Core: braces throughout to keep your spine stable and stop your torso from rotating.
Sets and Reps
Use a weight that feels challenging by the last two reps while still letting you hold a flat back and controlled motion. Always match your reps on both sides to your weaker arm so you build balanced strength, the same way I structure pulling work for the women in my online coaching.
| Goal | Sets | Reps (per arm) |
|---|---|---|
| Strength and shape | 3 to 4 | 8 to 12 |
| Maximum strength | 3 to 4 | 6 to 8 |
| Beginner or returning | 2 to 3 | 10 to 12 |
Rest 60 to 90 seconds between sets. Lift with control, squeeze briefly at the top, and lower slowly. Place rows early in your back or upper body workout while your grip is fresh.
Variations and Modifications
Standing Dumbbell Row
No bench needed. Hinge forward at your hips and rest your free hand on your thigh or a sturdy surface, keeping your back flat and core engaged.
Chest Supported Row
Easier on your lower back. Lie face down on an incline bench and row from there, which removes the hinge and lets you focus purely on pulling with your back. A great option if you are working around any back sensitivity.
Two Arm Bent Over Row
Work both sides at once to move more total weight. As you get stronger, focus on progressive overload by adding weight or reps each training block.
Rows pair well with other back work. For more pulling variety, add lat pulldowns and gorilla rows to the same session.
Common Mistakes to Avoid
- Rounding your back. This strains your spine and takes the work off your back. Keep a flat, neutral spine the whole time.
- Jerking the weight. Momentum robs the lift. Move smoothly and stay in control on the way up and down.
- Letting the core go soft. Brace your core to stay stable and stop your torso from twisting.
- Going too heavy. Too much weight turns the row into a whole body heave. Pick a load you can control through a full range of motion.
Single Arm Dumbbell Row FAQs
What muscles does the single arm dumbbell row work?
The single arm dumbbell row primarily works your latissimus dorsi, the large fan shaped muscles that give your back its width and shape. It also trains your rhomboids and mid traps to draw your shoulder blades back, your rear deltoids and biceps to assist the pull, and your forearms and grip to hold the weight. Your core works the whole time to keep your torso from rotating, which is part of why I rely on this movement so much with the women I coach over 40. Training one arm at a time also exposes and corrects the strength differences most of us carry between our dominant and weaker side, so you build a back that is stronger and more balanced.
How much weight should a woman use for dumbbell rows?
Choose a dumbbell that feels genuinely challenging by the last two or three reps while still letting you keep a flat back and smooth, controlled motion. For many women newer to strength training that lands somewhere between 10 and 25 pounds, but how those final reps feel matters far more than the number on the dumbbell. The rule I give my clients is simple: if you could easily do three or four more reps with good form, the weight is too light, and if your back rounds or you have to swing the weight up, it is too heavy. Because rows build strength quickly, expect to move up in weight over your first few weeks and treat that steady progression as the goal, not something to avoid.
Can you do single arm dumbbell rows without a bench?
Yes, and that flexibility is one reason I love this exercise. To row without a bench, hinge forward at your hips until your torso is close to parallel with the floor, then rest your free hand on your thigh or a sturdy surface like a chair for support. Keep your back flat, your core braced, and your neck in line with your spine, exactly as you would in the bench supported version. The standing version actually asks a bit more of your core and legs to stabilize, which is a useful bonus. This is the variation I most often give clients training at home, since all you truly need is a single dumbbell.
Are single arm rows better than two arm dumbbell rows?
Neither is better in every situation, and the strongest programs use both. Single arm rows let you focus fully on one side at a time, which sharpens your mind to muscle connection, corrects left to right strength imbalances, and demands more core stability to resist rotation. Two arm rows let you move more total weight in less time, which makes them efficient for building overall back strength. In my coaching I use single arm rows when the goal is balance, control, and quality of movement, and two arm rows when the goal is loading the back heavily. If you are choosing just one, the single arm version is the better starting point for most women over 40 because it builds clean, balanced strength from the ground up.
How many sets and reps of dumbbell rows should I do?
For building strength and a defined back, aim for 3 to 4 sets of 8 to 12 reps per arm, the range most women respond to best. If your priority is maximum strength, drop to 6 to 8 reps with a heavier weight, and if you are newer or returning after a break, start with 2 to 3 sets of 10 to 12 to groove the movement before adding load. Rest 60 to 90 seconds between sets, place rows early in your back or upper body workout while your grip is fresh, and always match the reps on your stronger side to your weaker side so you do not reinforce an imbalance. The bigger principle I coach is consistency over intensity, because the women who progress fastest are the ones who row with good form every week and add small amounts of weight over time, not the ones who chase soreness.
References
- Fenwick, Chad M. J., et al. “Comparison of Different Rowing Exercises: Trunk Muscle Activation and Lumbar Spine Motion, Load, and Stiffness.” Journal of Strength and Conditioning Research, vol. 23, no. 2, 2009, pp. 350–358, doi.org/10.1519/JSC.0b013e3181942019.
- Yun, Hezhang, et al. “Optimal Resistance Training Parameters for Improving Bone Mineral Density in Postmenopausal Women: A Systematic Review and Meta-Analysis.” Journal of Orthopaedic Surgery and Research, vol. 20, no. 1, 2025, article 523, doi.org/10.1186/s13018-025-05890-1.
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I’m Julie Lohre, an IFBB Fitness Pro and certified personal trainer and nutrition specialist. For more than 20 years I have helped women over 40 get stronger, leaner, and more confident through personalized online coaching built around their real lives.