Upright rows do work the side delts, and grip width is the biggest factor in how much. A wide grip (roughly twice your shoulder width) significantly increases lateral deltoid activation compared to a narrow grip, making it a legitimate side delt exercise when performed correctly. A narrow grip shifts more work to the biceps and upper traps, turning it into more of a shrug-and-curl hybrid than a true shoulder builder.
What the Research Shows About Grip Width
A study published in the Journal of Strength and Conditioning Research tested three grip widths on sixteen weight-trained men: narrow (half shoulder width), medium (shoulder width), and wide (double shoulder width). Lateral deltoid activity increased significantly with each jump in grip width, with large-to-very-large effect sizes across both the lifting and lowering phases. The posterior deltoid followed the same pattern. Meanwhile, biceps activity dropped as grip width increased, confirming that a wider grip shifts the demand from the arms to the shoulders.
The takeaway is straightforward: if your goal is side delt growth, grip the bar at about twice your shoulder width. A narrow or shoulder-width grip recruits more biceps and less lateral deltoid, which defeats the purpose if side delts are what you’re after.
How Upright Rows Compare to Lateral Raises
Lateral raises are often considered the gold standard for isolating the side delts, and the research backs that up. In a study comparing several common shoulder exercises, lateral raises produced the highest medial deltoid activation at about 30% of maximum voluntary contraction. The shoulder press came in close at 28%, while pressing movements like the bench press and dumbbell fly barely registered (5% and 3.4%, respectively).
That particular study didn’t test the upright row directly, but the exercise occupies a middle ground. With a wide grip, it strongly activates the lateral deltoid while also loading the upper traps and posterior delts. It’s a compound movement, meaning multiple muscle groups share the work. You won’t get the same isolation as a lateral raise, but you can use heavier loads and train the side delts alongside the traps and rear delts in a single movement. For many lifters, that tradeoff is worth it, especially as a complement to isolation work rather than a replacement for it.
The Shoulder Impingement Concern
Upright rows have a reputation for causing shoulder problems, and the concern isn’t unfounded. The movement combines two things that reduce space in the shoulder joint: lifting your arms upward and rotating them inward. Everyone has a bony bump on the outside of the upper arm bone, and when you internally rotate while raising the arm, that bump moves into the narrow gap beneath the acromion (the bony roof of the shoulder). Anything running through that gap, including rotator cuff tendons and the bursa, can get pinched.
This doesn’t mean the exercise is inherently dangerous, but it does mean technique matters more than with most movements. Two variables control your risk: grip width and pull height.
How to Perform Upright Rows Safely
The wide grip that maximizes side delt activation also happens to be the safer option. A wider grip naturally limits how much the shoulder internally rotates at the top of the movement, reducing the pinching effect in the joint. A narrow grip forces the shoulder into a more extreme internal rotation, which is where impingement risk climbs.
Pull height is the other critical factor. Pulling the bar up to your chin or lifting your elbows above shoulder level compresses the subacromial space further. The safer guideline is to stop the bar at your lower ribs, with your elbows rising no higher than shoulder level. This keeps the side delts under tension through the range of motion that matters while avoiding the range where the joint gets compressed.
If you already have shoulder pain or a history of impingement, you’ll likely feel it immediately with this exercise. Pain during the movement is a clear signal to stop and use an alternative.
Getting the Most Side Delt Work
A few practical adjustments can shift even more tension onto the lateral deltoid during upright rows:
- Use a cable or dumbbells instead of a barbell. A barbell locks your hands into a fixed path. Dumbbells and cables let your wrists rotate slightly as you pull, which can reduce joint stress and let you focus on driving the elbows outward rather than just pulling straight up.
- Think “elbows out,” not “hands up.” The side delts work hardest when your elbows move away from your body. Cueing yourself to lead with the elbows keeps the focus on shoulder abduction rather than arm flexion.
- Control the lowering phase. The research on grip width found significant lateral deltoid activation during the eccentric (lowering) portion. Dropping the weight quickly wastes half the exercise’s potential.
- Pair with lateral raises. Since lateral raises produce the highest isolated side delt activation and upright rows allow heavier loading, using both in a shoulder workout covers both ends of the stimulus spectrum.
Wide-grip upright rows are a solid side delt exercise when performed with controlled pull height and deliberate tempo. They won’t replace lateral raises for pure isolation, but they offer something lateral raises can’t: the ability to load the side delts with more weight in a compound pattern that also builds the traps and rear delts.