What is Hip Thrust?

What is Hip Thrust?

The hip thrust is a barbell exercise in which you sit on the ground with your upper back braced against a bench, roll a loaded bar into the crease of your hips, and drive your hips upward into full extension until your torso is parallel with the floor and forms a straight line from shoulder to knee. Bret Contreras, the strength coach and researcher who spent more than a decade studying the movement through EMG testing and biomechanical analysis, popularized it as one of the highest-yield exercises for building the gluteus maximus.

Unlike a squat or deadlift, where your spine and hips both travel through space while you balance a bar, the hip thrust pins your upper back against a stable surface, so the hip joint does almost all the meaningful work. That isolation is the point: it lets you load hip extension specifically, with far less involvement from the quadriceps and spinal stabilizers than a standing lift asks for.

People often confuse the hip thrust with the glute bridge, which is a related but distinct pattern performed with your shoulders on the floor, through a shorter range of motion, and with far less external load. Coaches program the hip thrust for physique goals such as glute hypertrophy, for powerlifters chasing a stronger lockout on the squat and deadlift, and for sprinters and jumpers training raw hip-extension power, because the supported position lets a beginner and an elite athlete alike load the pattern heavily and safely from the very first session.

How it works

Mechanically, the hip thrust starts with your hips flexed and your glutes just above the floor, then drives through hip extension until your thighs and torso line up in one straight plane from shoulder to knee. A 2021 biomechanical analysis by Brazil and colleagues, published in PLOS ONE, found that peak hip-extensor moment occurs early in the lift, around 83 degrees of hip flexion, and that although the moment falls by roughly two-thirds by the top of the rep, it stays meaningfully high near full extension, unlike a deadlift or squat, where hip-extensor torque collapses toward zero at lockout.

That resistance profile matches how the gluteus maximus is built to work: the muscle produces its highest force output near full hip extension, so the hip thrust keeps real tension on it exactly where it is strongest, rather than only at the bottom of the rep. Because your upper back is fixed against the bench, you don't need to brace against tipping forward or backward the way a standing squat or deadlift demands, so almost all the muscular effort routes into the hip extensors rather than into balance and spinal stabilization; ankle-joint contribution during the lift is negligible.

The gluteus maximus, both its upper and lower fibers, is the prime mover, and Contreras's 2015 EMG study found it reaches a peak of roughly 172% MVIC in the upper fibers and 216% MVIC in the lower fibers during a heavy set, well above the 84.9% and 130% MVIC the same muscle regions hit during a back squat. The hamstrings assist but produce comparatively less force here than in a hip hinge, because their length barely changes when the hip and knee both stay roughly fixed in flexion through the lift. The posterior fibers of adductor magnus, a genuine hip extensor as well as an adductor, add real force alongside the glutes, and the gluteus medius stabilizes the pelvis so it doesn't tip sideways under a heavy bar.

The formula

Estimated 1RM = hip thrust weight × (1 + reps ÷ 30)

Test a clean set of 5 to 10 reps rather than a single true max; a heavy bar balanced across your hip crease gets uncomfortable and technically risky right at failure. Plug that set into the Epley formula above, then set your training percentages off the estimate rather than guessing.

How to apply it

• Set the bench height: Rest your shoulder blades on the edge of a flat bench roughly knee height off the floor. Too low and you can't reach full hip extension; too high and you lose leverage and the top position feels unstable.
• Roll the bar into the hip crease: Position the bar in the natural crease where your thigh meets your pelvis, never on the soft stomach or low on the thighs. Use a thick bar pad every session; the crease is the one spot that transmits force without pain.
• Set your feet under your knees: Start with feet flat, hip-width apart, shins roughly vertical at lockout so your shins point straight up when your hips are fully extended. Heels slightly closer to your glutes than a squat stance biases more glute and less quad.
• Drive through the heels, not the toes: Push the floor away through your heels to extend the hip, and finish with a posterior pelvic tilt, a hard glute squeeze, and your ribs pulled down, not a lower-back arch.
• Control the full range: Lower until your glutes lightly graze the floor each rep, then drive back up to a straight line from shoulder to knee at the top. Cutting the bottom short shortcuts the exact range where the glute is loaded hardest.
• Brace before you drive: Take a breath and brace your core the way you would under a squat before every rep. A braced trunk keeps force traveling into hip extension instead of leaking into unwanted lumbar movement.

Types

Worked example

An 8-week loading progression for a lifter with an estimated hip thrust 1RM of about 100 kg. Load climbs in small jumps while reps taper down, and only one variable changes at a time so form stays clean at every step.

Add small jumps in load every one to two weeks while reps stay crisp and the lockout stays a true hip extension, not a back arch. If you can't finish the top set that way, hold the weight steady another week rather than force it.

Hip thrust vs back squat

The numbers come from Contreras and colleagues' 2015 EMG study and a 2023 training trial that equated volume between the two lifts. Neither replaces the other: the hip thrust isolates the glute at the joint angle where it's strongest, while the squat trains the quads and overall leg mass the hip thrust barely touches.

By goal

• Bodybuilding / physique: Make the hip thrust your main vertical glute lift. Run 3 to 4 sets of 8 to 15 reps, twice a week, and pair it with a hip-abduction or lateral-band movement so the gluteus medius grows alongside the maximus.
• Powerlifting / general strength: Use it as a heavy accessory, not a competition lift. 3 to 5 sets of 5 to 8 reps at 80 to 90% of your estimated 1RM builds hip-extension strength that carries over to a stronger squat and deadlift lockout.
• Sprinting and jumping: Systematic-review data show lighter, submaximal loads, roughly 30 to 60% of 1RM, moved explosively transfer better to sprint acceleration than sets of 6 to 12RM. Program hip thrusts for speed as a power movement, not a max-effort strength lift.

Common misconceptions

• "Hip thrusts are just a glute isolation move, not a real strength exercise." The hip thrust produces the highest gluteus maximus EMG of any commonly studied lift, a peak lower-glute activity of 216% MVIC versus 130% in the back squat, and lifters load it in a genuine 3-to-8-rep strength range just like a squat or deadlift. It belongs in a strength program, not just as a finisher.
• "A hip thrust and a glute bridge are the same exercise." A glute bridge is performed with your shoulders on the floor through a shorter range of motion, usually with your own bodyweight or a light load resting on the hips. A hip thrust rests your upper back on a bench, extends the range of hip flexion at the bottom, and lets you load a full barbell, which is why it builds far more strength and size over time.
• "Heavier is always better on a hip thrust." Once the bar gets heavy enough that you can only finish the rep by arching your lower back instead of extending your hip, you've stopped training the glutes and started loading your lumbar spine. Cap the weight at whatever you can lock out with a posterior pelvic tilt and a hard glute squeeze, not a back arch.
• "You should arch your back hard at the top to really feel it." The correct lockout is a straight line from shoulder to knee with your pelvis tucked under in a posterior tilt, not a lumbar arch. Arching the low back at the top is hyperextension, not hip extension, and it's the most common cause of low-back soreness after hip thrust day.

Related terms

Hip Thrust FAQ

What muscles does the hip thrust work?

The hip thrust is a gluteus-maximus-dominant exercise: the glute is the prime mover through both its upper and lower fibers. The hamstrings, the posterior fibers of adductor magnus, and the gluteus medius all assist, while the quadriceps do comparatively little work versus a squat.

Is the hip thrust better than the squat for glutes?

For pure gluteus maximus EMG activation, yes, the hip thrust produces roughly 70 to 90% higher peak activity than the back squat. For overall muscle growth the two are closer: a controlled 9-week trial found comparable glute hypertrophy between them, with the squat adding more quad and thigh size.

How much weight should I hip thrust?

Start with just the bar or light plates and master a full lockout with a posterior pelvic tilt before adding load. Strength-focused lifters typically work 3 to 5 sets of 5 to 8 reps at 80 to 90% of their estimated 1RM; hypertrophy work sits at 8 to 15 reps.

What is a good hip thrust weight for my bodyweight?

Based on lifter data, a novice man hip thrusts around bodyweight for a single rep, an intermediate about 1.75 times bodyweight, and an advanced lifter around 2.5 times bodyweight. Women's standards run slightly lower at the top end, roughly 1.5 to 2.25 times bodyweight from novice through advanced.

Why does my lower back hurt during hip thrusts?

Almost always because you're finishing the rep by arching the lumbar spine instead of extending the hip and tucking the pelvis. Lower the weight, cue a posterior pelvic tilt and a hard glute squeeze at lockout, and stop the set the moment you can't reach that position without arching.

What is the difference between a hip thrust and a glute bridge?

A glute bridge keeps your shoulders on the floor and moves through a shorter range, usually with bodyweight or a light load. A hip thrust rests your upper back on a bench, which lets your hips travel through a longer range and lets you load a full barbell, producing a much bigger training stimulus.

How many sets and reps should I do for hip thrust hypertrophy?

Most lifters build glute size well with 3 to 4 sets of 8 to 15 reps, twice a week, at roughly 65 to 80% of their estimated 1RM. Stop each set one or two reps before you'd need to arch your back to finish, since that's where the true glute stimulus ends.

Can hip thrusts make me run faster or jump higher?

Studies show hip thrusts acutely improve sprint acceleration over the first 10 meters, and lighter, explosive loads around 30 to 60% of 1RM transfer to sprinting better across a training block than very heavy 6-to-12RM sets. Treat them as a power exercise for athletes, not only a size builder.

What bench height should I use for a hip thrust?

Use a flat bench roughly knee height, with your shoulder blades resting on the edge. If the bench is too low you can't reach full hip extension; if it's too high you lose stability and leverage at lockout. Most standard gym benches, about 17 to 19 inches, work for average-height lifters.

Do I need a pad for barbell hip thrusts?

Yes, almost everyone does. The bar sits directly across the crease of your hips, a spot with very little natural padding, and even moderate loads become painful without one. A thick foam or Airex-style hip-thrust pad lets you focus on driving through the glutes instead of the bar.

References

1. Contreras B, Vigotsky AD, Schoenfeld BJ, Beardsley C, Cronin J. A Comparison of Gluteus Maximus, Biceps Femoris, and Vastus Lateralis Electromyographic Activity in the Back Squat and Barbell Hip Thrust Exercises. J Appl Biomech, 2015;31(6):452-458. PubMed 26214739
2. Plotkin DL, et al. Hip thrust and back squat training elicit similar gluteus muscle hypertrophy and transfer similarly to the deadlift. Front Physiol, 2023;14:1279170
3. Brazil A, Needham L, Palmer JL, Bezodis IN. A comprehensive biomechanical analysis of the barbell hip thrust. PLOS ONE, 2021;16(3):e0249307
4. Krause Neto W, Vieira TL, Gama EF. Barbell Hip Thrust, Muscular Activation and Performance: A Systematic Review. J Sports Sci Med, 2019;18(2):198-206. PMC6544005
5. Anatomy, Bony Pelvis and Lower Limb, Gluteus Maximus Muscle. StatPearls, NCBI Bookshelf
6. Anatomy, Bony Pelvis and Lower Limb, Hamstring Muscle. StatPearls, NCBI Bookshelf
7. Hip Thrust Standards for Men and Women (kg). Strength Level
8. Understanding the Barbell Hip Thrust. ACE Fitness, Certified, November 2019