Smith Machine Hip Thrust
- Targets the gluteus maximus, with help from the hamstrings, adductors and quads
- Requires a Smith machine, a flat bench and a barbell pad
- Beginner friendly, because the bar runs on a fixed track
- Hardest at the top of the rep, which is where squats and hinges go easy
- Safety hooks let you go heavy without a spotter
How to Do a Smith Machine Hip Thrust
- Set the bench under the bar. Slide a flat bench into the machine so its long edge runs parallel to the bar, and set the bar low. Sit with your upper back against the bench edge, just under your shoulder blades, and your hip crease directly under the bar.
- Pad the bar and unhook it. Put the pad on, slide under, and rotate the bar to release the hooks. Set your feet flat and hip-width apart, far enough out that your shins are vertical at the top.
- Drive up and squeeze. Tuck your chin, push through your heels, and lift until your torso and thighs form a straight line. Hold the squeeze for a beat, then lower under control until your hips are just above the floor.
Technique Cues
Line your hips up before you unhook. The bar only travels one path, so the bench has to be right before you start.
Ribs down. At the top, your lower back will try to finish the rep for you. Keep your ribcage pulled toward your hips so the extension comes from the hips instead.
Weight through the heel, toes down. If your heels lift, your feet are too far forward.
Stop at straight. Full hip extension is a straight line from knee to shoulder. There is no bonus for going past it.
Common Mistakes
| Mistake | Fix |
|---|---|
| Bench set too far forward or back | Reset until the bar sits in your hip crease |
| Starting hooks set too high | Drop to a lower notch |
| Arching the lower back at the top | Lighter weight, ribs down |
| Knees drifting past the ankles | Move your feet further out |
| Feeling it in the hamstrings | Move your feet closer in |
| Sliding out before re-hooking | Re-hook before you slide out |
Muscles Worked
| Role | Muscles |
|---|---|
| Primary | Gluteus maximus |
| Secondary | Hamstrings, adductors, quads |
| Stabilisers | Core, obliques, gluteus medius and minimus |
Foot position shifts the emphasis a little. Closer in brings the quads into it, further out brings the hamstrings. Pick the version where you feel your glutes working and can add weight over time.
Benefits
The hip thrust loads the top of hip extension, which is the one position squats and Romanian deadlifts leave mostly untrained. The Smith machine version adds one thing: the bar cannot go anywhere except up and down. You are not balancing it, so more of your attention goes to pushing, and the hooks mean the set ends when you decide it does.
The trade-off is that the fixed path has to match your hips, not the other way around, so setup is fussier at first. Find your bench position once and use it every time. A 2023 study in Frontiers in Physiology compared nine weeks of barbell hip thrusts against back squats and found similar glute growth from both. That research used a free barbell, so read it as support for training hip extension, not for one piece of equipment over another. It is one good option for training the squeezed, shortened position, not a shortcut.
Sets and Reps
| Goal | Sets and reps |
|---|---|
| Learning the movement | 3 × 10–12, light |
| General glute growth | 3–4 × 8–12 |
| Strength focus | 3–5 × 5–8 |
| Finisher | 2–3 × 15–20 |
Once or twice a week is plenty. Leave one to three reps in the tank on most sets. A Smith bar usually weighs less than a standard barbell, and how much less varies by machine, so your numbers here will not compare cleanly to your barbell ones. Track this exercise against itself and watch it climb over a few months.
Easier and Harder Variations
| Make it easier | Make it harder |
|---|---|
| Bodyweight glute bridge | Add weight (start here) |
| Bodyweight hip thrust | Pause 2–3 seconds at the top |
| Dumbbell hip thrust | Slow the lowering to 3 seconds |
| Feet flat on the floor, no bench | Band around the knees |
| Shorter range of motion | Single-leg, with much lighter plates |
Pick one change at a time. Stacking four of them means you cannot tell which one did anything.
What to Use Instead
The barbell hip thrust is the closest swap, then the dumbbell hip thrust, a machine hip thrust, a glute bridge, or a cable pull-through. All of them load hip extension. If the substitute is the one you will actually do consistently, it is the better exercise for you — and it pairs well with one or two smaller accessory movements rather than six more glute exercises.
