Legs · Hip extension

Smith Machine Hip Thrust

The Smith machine hip thrust is a glute exercise where your upper back rests on a bench and the Smith bar sits across your hips as you drive them up. The rails keep the bar steady, so you can load the glutes heavily without balancing a free barbell, and the safety hooks make setup and bail-out easier.

Also known as: Smith hip thrust, Hip thrust on Smith machine, Guided barbell hip thrust

Muscle group: Legs
Movement pattern: Hip extension
Type: Compound
Equipment: Smith machine, Bench, Bar pad
Difficulty: Beginner

What muscles does the smith machine hip thrust work?

Primary movers

Gluteus maximus

Assisting muscles

Hamstrings
Quadriceps
Adductors
Erector spinae

The glutes extend the hip, driving your pelvis up against the bar. In a hip thrust, they are strongest at the top where the hips are fully extended.

A Smith machine fixes the bar path, so you can focus on pushing through your heels and squeezing the glutes without balancing the bar on your hips.

The hamstrings and quads help, and the position of your feet changes how much each contributes. Feet closer to the hips shift work to the quads, and feet further out emphasise the hamstrings.

The bar is on your pelvis, so a thick pad is essential. A Smith machine bar can hurt at heavier loads without padding.

How to do the smith machine hip thrust

Setup

1
Set the Smith bar to a low height and place a bench behind it.
2
Sit on the floor with your upper back against the bench and roll the bar over your hips, with a pad.
3
Plant your feet flat, about hip-width apart.
4
Unhook the bar and brace your core.

Execution

1
Drive through your heels to lift your hips up.
2
Extend until your body forms a straight line from knees to shoulders.
3
Squeeze your glutes at the top.
4
Tuck your chin and keep your ribs down.
5
Lower slowly until your hips are just above the floor.
6
Re-hook the bar when finished.

Common smith machine hip thrust mistakes

No padding

A bare bar on the hips is painful and limits the load.

The fix: Use a thick bar pad or wrap a mat around the bar.

Overarching the back

Flaring the ribs at the top shifts work to the lower back.

The fix: Tuck your chin, keep your ribs down and stop when your hips are in line with your body.

Feet too far away

Placing your feet too far out loads the hamstrings.

The fix: Place your feet so your shins are vertical at the top.

Bench too high or low

A bench at the wrong height changes the range.

The fix: Use a bench that sits at the bottom of your shoulder blades.

How many sets and reps?

Goal	Sets	Reps	Load	Rest
Hypertrophy	3–4	8–12	Moderate to heavy	90 s
Strength	3–4	5–8	Heavy	2 min
Beginner	2–3	10–12	Light	60–90 s

A good option when you want to lift heavy for glutes without a free barbell. Use a pad, a pause at the top and a consistent foot position. Progress in small plate steps.

Running the smith machine hip thrust in your next block? Hercules logs every set, shows last session's numbers before you lift, and suggests when to add weight.

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