Leg press: depth, foot position and the lockout question
Feet mid-platform at shoulder width, lower until your knees reach about 90° or just before your lower back leaves the pad, then press back without slamming into a locked knee. The limit on depth is your pelvis staying against the seat, not the machine's range.
Where it fits
The leg press is a machine that lets you load the quads heavily with minimal spinal load and low skill demand. That combination makes it genuinely useful rather than a lesser substitute:
- Low spinal load. Useful if your lower back is the limiting factor on squats, or on a day when it is already fatigued from deadlifts.
- Easy to push near failure safely. No balance requirement and no risk of being stuck under a bar.
- Low skill requirement. Beginners can train hard on it in week one.
- Easy to progress in small increments.
What it does not do: train the trunk, teach a movement pattern you use in life, or develop balance. That is a reason to squat as well, not a reason to skip the leg press — see free weights versus machines.
Setup and execution
- Sit fully back with your whole back and hips against the pad. This is the position you must maintain.
- Feet mid-platform, about shoulder width, toes slightly out.
- Adjust the seat so that at the bottom your knees reach roughly 90° without your hips rolling off the pad.
- Whole foot in contact with the platform. Heels must not lift.
- Press up, release the safety catches.
- Lower under control — two to three seconds — until your knees are around 90° or just before your lower back starts to lift.
- Press back through the whole foot without letting the knees collapse inward.
- Stop just short of a locked knee. Keep a small bend.
Do not slam into lockout. Driving hard into a fully locked knee under heavy load is the most common source of leg press knee complaints, and it also gives the quads a rest at the top. Stop just short and keep tension.
Foot position
| Foot position | Emphasis | Note |
|---|---|---|
| Mid-platform, shoulder width | Balanced quad and glute | The default. |
| High on the platform | More glute and hamstring | Longer hip range, shorter knee range. |
| Low on the platform | More quad | Watch for heels lifting. |
| Wide stance, toes out | More adductor and glute | Comfortable for many people. |
| Narrow stance | More outer quad | Can be harder on the knees. |
All of these are legitimate. Pick one and be consistent within a training block, so your numbers remain comparable — see tracking strength progress over months.
Faults and fixes
- Lower back lifting off the pad. The most important fault, and the true limit on your depth. Going deeper by letting the pelvis tuck loads the lumbar spine under a very heavy machine. Reduce range or adjust the seat.
- Heels lifting. Move the feet higher on the platform or reduce depth.
- Quarter reps. Extremely common on this machine, because the plate stack is flattering. Full controlled range at less weight beats a huge load moved 15 cm.
- Hands pushing on the knees. Hold the handles.
- Knees collapsing inward. Reduce the weight; push the knees out slightly.
- Slamming the lockout. Stop just short.
- Bouncing at the bottom. Control the transition.
Programming and variations
- Hypertrophy: 3–4 sets of 8–15, controlled descent. The leg press tolerates higher reps well.
- Strength: 3–4 sets of 5–8, though barbell work transfers better to strength goals.
- Good for pushing close to failure, since the risk is low — see reps in reserve and failure.
- Useful as a second quad exercise after squats, or as the primary one if squatting is not available to you.
- Progress in small increments, and note that plate loading differs between machines — leg press numbers are not comparable across gyms.
Related machines:
- Hack squat. More squat-like position, excellent quad builder.
- Pendulum squat. Where available, one of the best quad machines there is.
- Single-leg leg press. Addresses side differences; use much less weight.
- Smith machine squat. Fixed bar path, a reasonable middle ground.
Common questions
How deep should I go?
Until your knees are around 90°, or just before your lower back leaves the pad — whichever comes first.
Should I lock out my knees?
No. Stop just short and keep tension.
Where should my feet go?
Mid-platform at shoulder width as a default. Higher for more glute, lower for more quad.
Is the leg press as good as squats?
For quad hypertrophy, close. For trunk strength, balance and general athleticism, no.
Why does my lower back round at the bottom?
Too much depth for your current hip mobility. Reduce the range.
Why do my knees hurt on this?
Usually slamming the lockout, or a very narrow stance with heavy load.
Can I compare my leg press between gyms?
No. Machine angles and leverages differ substantially.
The practical version
- Whole back and hips against the pad, and keep them there.
- Feet mid-platform at shoulder width, whole foot in contact.
- Depth is limited by your lower back staying on the pad, not by the machine.
- Stop just short of a locked knee — do not slam into lockout.
- Control the descent over two to three seconds; avoid quarter reps.
- Leg press loads are not comparable between machines or gyms.
Key takeaways
- Depth is limited by your lower back staying against the pad, not by the machine's range.
- Feet mid-platform at shoulder width is the default; higher for glutes, lower for quads.
- Stop just short of a locked knee — slamming lockout causes most leg press knee complaints.
- Quarter reps are the standard fault here because the plate stack is flattering.
- The low risk makes it a good place to train close to failure.
- Leg press numbers are not comparable between machines or gyms.
Related reading
General information, not medical or individualised advice. Speak to a doctor before starting a new programme, especially if you have a medical condition, are pregnant, or are returning from injury. If you train with a coach, their guidance takes precedence.
Track it, or none of this applies
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