Why Hip Thrusts Work for Glute Growth
Hip thrusts load the glutes through hip extension — the exact motion the muscle is built to produce — with the resistance positioned directly against that motion. Squats load the same hip through a mix of hip and knee extension, so more of the work gets shared with the quads.
What the glutes actually do
The glute maximus's primary job is hip extension — driving your hip from a bent position back to straight, the motion you use standing up from a chair or the top of a squat. A muscle grows fastest when it's asked to produce force through the range of motion it's actually built for. Building strength or muscle requires that motion to be trained with enough resistance and repeated progression over time.
A hip thrust puts the resistance — a barbell across the hips — directly against that hip-extension motion, from a dead stop at the bottom to full lockout at the top. Surface electromyography studies often measure higher glute signals during hip thrusts than squats, but a higher EMG reading does not automatically mean more long-term muscle growth. In a 2023 volume-matched training study, both exercises produced similar glute growth in untrained participants while building exercise-specific strength.
Why a squat doesn't do the same thing
A squat is a hip-and-knee movement — as you stand up, both your hips and your knees are extending at the same time, which means the quads share a large part of the workload. That's not a flaw in the squat; it's what makes it a genuinely excellent whole-leg exercise. It's also why it distributes work differently from a hip thrust — the two exercises emphasize different positions and solve different training problems.
What this means for a real program
Neither exercise replaces the other. A hip thrust is the more direct tool when the specific goal is glute size and strength; a squat builds broader lower-body strength that carries over to more of daily life and other lifts. Our strength training guide covers where the hip thrust fits alongside the other core glute exercises.
Frequently asked questions
Are hip thrusts better than squats for glutes?
Not universally. Hip thrusts emphasize loaded hip extension, while squats train the hips and knees together. A 2023 training study found similar glute growth from volume-matched hip thrust and squat programs in untrained adults, with squats producing more thigh growth. Exercise choice should match the outcome and equipment available.
Why does the top of the hip thrust feel like the hardest part?
Because that's where the glutes are working hardest — full hip extension is the exact position the exercise is built to load. A squat's hardest point is usually near the bottom, in a much more quad-dominant position, which is a big part of why the two exercises feel so different for the same lower body.
Do I need a bench for hip thrusts?
It helps but isn't required. A bench lets your torso stay roughly parallel to the floor through the full range of motion, which is closest to the studied version of the exercise. A floor bridge (see our home workouts guide) trains the same pattern with a shorter range of motion — a reasonable substitute, not a lesser exercise.
Sources
- Hip thrust and back squat training elicit similar gluteus muscle hypertrophy — Frontiers in Physiology / PubMed (accessed August 2026)
- Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults — American College of Sports Medicine / PubMed (accessed August 2026)