The single-arm dumbbell row is one of the most accessible and rewarding back builders you can do, which is why nearly every beginner program includes it. By supporting your torso on a bench with one hand and knee, you take the lower back out of the equation and let the working side move through a huge range of motion, from a deep stretch at the bottom to a hard contraction at your hip. Training one arm at a time exposes and fixes strength imbalances and lets you really feel the lat working. All you need is a single dumbbell and a bench, making it ideal for home gyms and busy commercial floors alike.
How to do the single-arm dumbbell row
- Place your right hand and right knee on a flat bench so your torso is roughly parallel to the floor and your back is flat, not rounded. Plant your left foot on the ground for a stable base.
- Hold the dumbbell in your left hand with a neutral grip, arm hanging straight down and your shoulder reaching toward the floor to feel a stretch across your lat.
- Brace your core and set your back flat, keeping your neck in line with your spine by looking slightly down and ahead.
- Initiate the pull by driving your elbow up and back toward your hip, leading with the elbow rather than the hand, and keeping it tucked fairly close to your side.
- Pull until the dumbbell reaches the side of your torso near your hip and your shoulder blade has retracted toward your spine. Pause and squeeze for a beat at the top.
- Lower the dumbbell slowly under control, letting your shoulder blade protract and your arm reach back into a full stretch at the bottom.
- Complete all reps on one side, then switch your hand and knee placement to train the other arm with the same range and tempo.
Muscles worked
The primary muscle worked is the lats (latissimus dorsi), the large fan-shaped muscle that runs from your upper arm down the sides of your back and is responsible for pulling the elbow down and back toward the hip. Because you row toward the hip rather than the chest, the movement biases the lat through its lengthened range, making it excellent for back width. The upper back acts as the key secondary contributor, with the rhomboids and mid and lower trapezius retracting the shoulder blade at the top of each rep. The posterior deltoid assists in driving the elbow back, while the biceps, brachialis, and forearm flexors work to bend the elbow and maintain grip. The core and obliques fire isometrically to resist torso rotation.
Benefits
- Builds lat width and upper-back thickness using just one dumbbell and a bench
- Trains each side independently, exposing and correcting left-to-right strength imbalances
- Allows a long range of motion from deep stretch to full contraction for strong muscle growth
- Supporting the torso on a bench protects the lower back, making it safe for beginners
- Easy to learn and load progressively, so you can add weight steadily as you get stronger
Common mistakes
- Twisting the torso to lift: keep your shoulders and hips square to the bench and let the lat move the weight instead of swinging your body up.
- Rowing with momentum: pause briefly at the bottom and pull deliberately rather than jerking the dumbbell off the stretch.
- Shrugging the shoulder toward your ear: keep the shoulder down and drive the elbow back so the lat does the work, not the upper trap.
- Cutting the range of motion short: let the arm fully extend and the shoulder reach toward the floor at the bottom of every rep.
- Flaring the elbow wide: keep the elbow tucked toward your side so you pull toward the hip and bias the lats.
- Rounding the back: maintain a flat, neutral spine throughout instead of letting the chest cave toward the bench.
Form tips
- Think about pulling with your elbow, not your hand, to take the biceps out of the lift and target the lat.
- Lead the bottom of each rep with a deliberate stretch, reaching the shoulder down before you pull.
- Pull the dumbbell toward your hip, not your chest, to keep tension on the lats.
- Keep your non-working hand and knee firmly planted so your torso stays a stable, locked platform.
- Use a slow two- to three-second lowering phase to maximize the stretch and control.
Sets & reps
For most lifters, 3 to 4 sets of 10 to 12 reps per arm with around 75 seconds of rest is the sweet spot and matches this movement's strength as a controlled, range-of-motion exercise. For hypertrophy, stay in the 8 to 12 rep range with a weight that makes the last rep or two genuinely hard, emphasizing the stretch and squeeze. For pure strength, drop to 5 to 8 heavier reps with longer rest, though the row rewards quality over maximal loading. For muscular endurance, use lighter dumbbells for 12 to 20 reps. Always match reps on both sides to your weaker arm.
Frequently asked questions
What muscle does the single-arm dumbbell row work?
The single-arm dumbbell row primarily targets the lats (latissimus dorsi), the large muscle that gives your back its width. It also heavily works the upper back, including the rhomboids and traps, plus the rear deltoids and biceps as secondary movers, while the core resists rotation.
Should I row toward my chest or my hip?
Pull the dumbbell toward your hip rather than your chest. Rowing toward the hip keeps your elbow tucked and biases the lats through a longer range, which is the main goal of this exercise. Rowing high toward the chest with a flared elbow shifts more work to the upper traps and rear delts.
Is the single-arm dumbbell row good for beginners?
Yes. It is one of the best beginner back exercises because bracing your torso on a bench protects the lower back, the movement is easy to learn, and training one arm at a time helps you feel the lat working and fix side-to-side imbalances early in your training.
How heavy should I go on single-arm dumbbell rows?
Choose a weight you can control for 10 to 12 clean reps without twisting your torso or yanking the dumbbell up. If you have to swing your body to move it, the weight is too heavy. Prioritize a full stretch and a controlled squeeze, then add load gradually as your form holds.
What is the difference between a single-arm dumbbell row and a bent-over row?
A single-arm dumbbell row supports your torso on a bench and works one side at a time, sparing the lower back and allowing a long, focused range of motion. A bent-over barbell or dumbbell row is unsupported, trains both sides at once, and demands more from the lower back and core to hold position.
How do I stop twisting my torso during the row?
Keep your shoulders and hips square to the bench and brace your core hard before each rep. Lighten the weight if needed, pull with your elbow rather than your hand, and avoid rotating your shoulder up to meet the dumbbell. The torso should stay still while only the arm and shoulder blade move.