Leg Extension: How to Do It, Muscles Worked and Benefits
How to do the leg extension with perfect form. The muscles it works, the benefits, common mistakes to fix, home alternatives without a machine, and a simple sets and reps plan.
By Nadia Popescu, Strength & Conditioning Writer · Updated 10 July 2026
The upright row is a vertical pull where you lift a bar, dumbbells or a cable straight up the front of your body to around chest height, leading with your elbows. It is a genuinely effective way to build the side and rear shoulders and the upper traps at the same time, which is why it has been a bodybuilding staple for decades. It also has a reputation as a shoulder-wrecker, and that reputation is half deserved: done badly it can pinch the shoulder, but done with a sensible grip and a limited range it is a useful and safe lift for most people. Here is how to do it right, what it works, and when to pick something else.
You can use a barbell, an EZ bar, dumbbells or a cable. Dumbbells and cables tend to be gentler on the shoulders, so start there if you are new to the move.
Elbows to shoulder height, no higher
Almost every upright row problem comes from pulling too high with too narrow a grip. Keep your hands at least shoulder-width apart and stop the pull the moment your elbows reach shoulder level. That single limit keeps the work on your delts and traps and keeps your shoulder joint out of the pinch position that causes trouble.
The upright row is a compound shoulder pull that hits the delts and the upper back together.
Because it drives the upper arm upward and inward, the upright row is one of the moves most often flagged for people prone to shoulder impingement, where overactive upper trapezius and altered shoulder mechanics play a role (systematic review of shoulder muscle activity in subacromial impingement). A wider grip and a shorter range go a long way to keeping it comfortable.
Pulling too high. Yanking the bar all the way to the chin forces the shoulder into internal rotation at the top and is the classic cause of impingement pain. Stop at shoulder height.
Grip too narrow. A very close grip pins your elbows in and drives the joint into the pinch position. Go shoulder-width or wider, which spreads the work to the delts and eases the shoulder.
Using momentum. Heaving the weight up with a hip and knee bounce turns it into a swing rather than a shoulder exercise. Keep your torso still and let the elbows do the lifting.
Leading with the hands. If your wrists curl up and your hands rise before your elbows, you turn it into an awkward curl. Drive the elbows up first and keep them above the hands throughout.
Going too heavy. This is not a lift to test your ego on. Excess weight forces every one of the mistakes above. Pick a load you can control for 10 to 15 clean reps.
If the upright row bothers your shoulders, or you just want variety, these cover the same muscles with less strain.
The upright row is best trained with control and moderate weight rather than heavy singles:
Only add weight once your form holds up for every rep. If it ever pinches, widen your grip, lower the range, or swap to lateral raises and face pulls, which give you most of the benefit with none of the risk.
The upright row mainly works the side and rear deltoids (shoulders) and the upper trapezius, with help from the biceps, forearms and the other scapular muscles that pull your shoulder blades up and together. A wider grip shifts more work onto the delts, while a narrow grip loads the traps more heavily. It is one of the few moves that trains the shoulders and upper traps together in one pull.
It can be for some people. Pulling the bar high with a narrow grip drives the upper arm into internal rotation near the top, which can pinch the tissues in the shoulder for those prone to impingement. You reduce the risk a lot by using a wider grip and stopping the pull when your elbows reach shoulder height rather than yanking the bar up to your chin. If you have a history of shoulder pain, use dumbbells or swap to lateral raises and face pulls instead.
Stop when your upper arms are roughly parallel to the floor, meaning your elbows reach about shoulder height. Pulling higher than that, up towards the chin, is where the shoulder joint gets squeezed into an awkward position. Keeping the elbows at or below shoulder level keeps the tension on the delts and traps and off the joint.
Dumbbells and cables are usually kinder to the shoulders than a fixed barbell, because your wrists and arms can find a more natural path rather than being locked to a straight bar. A cable gives smooth, constant tension and is easy to load, dumbbells allow the most freedom, and a barbell or EZ bar lets you go heaviest. If a straight bar bothers your wrists or shoulders, switch to dumbbells or a wide cable rope.
Lateral raises are the best swap for the side delts, and face pulls are excellent for the rear delts and upper back without the impingement risk. High pulls and wide-grip cable upright rows are close cousins that many people tolerate better. Shrugs cover the upper traps directly. Between lateral raises and face pulls you get almost everything the upright row offers with far less strain on the joint.
For shoulders and traps, 3 to 4 sets of 10 to 15 reps with a moderate weight works well. This is not a lift to max out on, so leave the ego at the door, keep the reps controlled and the elbows at shoulder height. Rest 60 to 90 seconds between sets and only add weight once your form stays clean for every rep.
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