What muscles does the sumo deadlift work?

The glutes drive it by extending your hips, with the inner thighs and quads taking a much bigger share than they do on a conventional pull. Your lower back, lats and traps hold your position. Measured in 13 college footballers against conventional, sumo produced substantially more activity in both quadriceps muscles tested.

Is sumo deadlifting cheating?

No, though the shorter range is real. The bar travels about 20 percent less distance and the total mechanical work is lower. The same research found roughly three times the knee moment off the floor and far more quad involvement. It is a different lift, not a discounted one.

How wide should your sumo stance be?

As wide as your hips let you sit while your shins stay vertical when viewed from the front. Past that you lose the ability to push. Stance width is decided by your hip anatomy, so copying someone else at the gym is the wrong method.

Why can I not get the sumo deadlift off the floor?

The two usual reasons are hips set too low, so your first movement is your body correcting itself, and knees pointing forward instead of out over the toes. Both leave you in a position you cannot push from. Fix the setup before you touch the weight.

Is sumo easier on your back than conventional?

The back extensor moment at the lower spine measures lower in sumo, which is genuine. But studies of muscle activity in the lower back disagree with each other, and none of them tested injury, so nobody can honestly call it the safe version.

Should I pull sumo or conventional?

Whichever your hips let you set a strong position in. Try both for several weeks each rather than choosing on theory. If a wide stance feels like it jams at the hip rather than stretches, that is anatomy and conventional is your lift.

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Barbell · intermediate · back

Barbell deadlift sumo

Also called Sumo deadlift, Wide stance deadlift, Sumo pull, Sumo barbell deadlift.

The short answer

The sumo deadlift takes a wide stance with the hands gripping inside the knees, which lets you sit closer to the bar and keep your torso more upright. It is your glutes that extend your hips and stand the weight up. What separates it from the conventional pull has been measured: the bar travels about 20 percent less distance, and your quads do a great deal more.

How to do it

Step oneStand with feet wider than shoulder-width apart with toes pointed outward, and a barbell over your mid-foot.
Step twoGrip the bar with hands inside your legs using an overhand or mixed grip.
Step threeBrace your core and keep your chest up, then push your knees out in line with your toes.
Step fourDrive through your heels to lift the bar, extending your hips and knees at the same rate.
Step fiveStand fully upright at the top, then lower the bar back to the floor in a controlled manner.

What usually goes wrong

Each starts with what you would notice.

Your hips shoot up the instant you start the pull.

WhyYou set up squatting far lower than the position you can actually pull from, so the first thing that happens is your body correcting itself, and it loses all its tightness doing it.

FixSet your hips above your knees, not level with them. Sumo is not a squat with a bar in your hands. If the setup looks like a frog, the pull is going to start by fixing the setup.

Your hips pinch at the front and the bar will not come off the floor.

WhyThe knees are pointing forward rather than out over your toes, so your hips are being asked to work in a position they are jammed in.

FixPush the knees out toward your little toes before you pull and keep pushing them out through the whole lift. This is the habit conventional pullers carry over and it stops sumo working entirely.

The wide stance feels unstable and you cannot get tight.

WhyThe stance is wider than your hips have range for, so nothing about the position is one you can push from.

FixLook at your shins from the front. If they are angled out rather than vertical when you are set, come in until they are. Stance width is set by your hips, and other people at your gym are not a reference.

The bar swings out away from your legs on the way up.

WhyThe lats are not holding it in, so the weight moves out to where your back has to hold a longer lever than the wide stance was supposed to save you.

FixPull your armpits down toward your hips before the bar moves and drag it up your shins. The whole point of the wide stance is a shorter, closer path, and a drifting bar throws that away.

Sumo or conventional, by the numbers

The two styles have been filmed side by side at a championship, one group of lifters pulling each, and the differences are specific rather than vague. Conventional moves the bar roughly a quarter to two-fifths further, sets the hips into more flexion, and produces a higher back extensor moment at the lower spine. Conventional does significantly more mechanical work because the bar simply travels further.

The other half is the part people leave out. In a separate lab study on 13 college footballers, sumo produced substantially more quadriceps activity in both of the thigh muscles measured, and the competition footage put around three times the knee moment on it at the instant the bar leaves the floor. It is a far more leg-driven pull than it looks.

So they are not the same lift with different feet. Conventional asks more of the hinge and the back extensors. Sumo asks more of the knees, the quads and your hips ability to sit in a wide stance at all.

Which one should you pull

Hip anatomy decides more of this than preference does. Sumo needs you to sit into a wide stance with the knees pushed out, and some hips simply do not go there. If it feels like something is jamming rather than stretching, that is structural and no amount of practice moves it.

Height and proportions matter too, though less predictably than the internet claims. Long arms shorten any deadlift. What actually settles it is trying both properly for a few weeks each rather than picking on a theory.

And you do not have to choose forever. Plenty of people pull one style heavy and use the other as an accessory, which gets you the quad work from one and the hinge work from the other.

Shorter is not easier

Sumo is called cheating often enough that it is worth answering with the measurements. Yes, the bar path is shorter, by about a fifth, and yes the total mechanical work is lower. That much is true and it is why sumo records tend to run higher.

What that leaves out is that the same comparison found around three times the knee moment off the floor and a great deal more quadriceps work. The lift moves the bar a shorter way and asks a completely different set of joints to do it. Anyone who has watched a sumo pull die two inches off the ground knows that shorter is not the same as easier.

It is also not the safe deadlift. The back extensor moment at the lower spine does come out lower, which is a real finding worth knowing, but the muscle activity studies contradict each other and none of them measured injuries. If something hurts and keeps hurting, that is a question for a physiotherapist.

What it is for

The sumo barbell deadlift is a hip hinge pulled from a wide stance with the hands inside the legs, targeting the glutes. The wide stance shortens the distance the bar travels and keeps the torso more upright, so it asks less of the lower back to hold position than a conventional pull.

Questions people ask

What muscles does the sumo deadlift work?: The glutes drive it by extending your hips, with the inner thighs and quads taking a much bigger share than they do on a conventional pull. Your lower back, lats and traps hold your position. Measured in 13 college footballers against conventional, sumo produced substantially more activity in both quadriceps muscles tested.
Is sumo deadlifting cheating?: No, though the shorter range is real. The bar travels about 20 percent less distance and the total mechanical work is lower. The same research found roughly three times the knee moment off the floor and far more quad involvement. It is a different lift, not a discounted one.
How wide should your sumo stance be?: As wide as your hips let you sit while your shins stay vertical when viewed from the front. Past that you lose the ability to push. Stance width is decided by your hip anatomy, so copying someone else at the gym is the wrong method.
Why can I not get the sumo deadlift off the floor?: The two usual reasons are hips set too low, so your first movement is your body correcting itself, and knees pointing forward instead of out over the toes. Both leave you in a position you cannot push from. Fix the setup before you touch the weight.
Is sumo easier on your back than conventional?: The back extensor moment at the lower spine measures lower in sumo, which is genuine. But studies of muscle activity in the lower back disagree with each other, and none of them tested injury, so nobody can honestly call it the safe version.
Should I pull sumo or conventional?: Whichever your hips let you set a strong position in. Try both for several weeks each rather than choosing on theory. If a wide stance feels like it jams at the hip rather than stretches, that is anatomy and conventional is your lift.