Set the seat and footplate, sit back against the backrest, place your feet shoulder-width on the plate, and grip the handles. Press the footplate away until your legs are almost fully extended without locking your knees, then lower it back under control and repeat.
Set the machine up first
Set the seat and footplate so you can sit all the way back with your lower back supported. If you have to curl your hips off the pad or reach for the sled, the setup is too far away; if your knees are jammed into your chest before you start, it is too close.
Place your feet and body the right way
Sit back against the backrest, set your feet shoulder-width apart, and hold the side handles for stability. Your torso should stay pinned to the seat while you press, with your heels kept on the footplate.
Drive the sled without losing your heels
Keep your heels planted and the push stays in your quads and glutes. When they lift, the pressure shifts forward, the rep gets shakier, and you lose the clean drive.
A clean rep feels smooth but heavy. The sled moves without your hips peeling off the backrest, and the pressure stays spread across the whole foot instead of running onto your toes.
If the heel starts to rise, the back of the foot goes light first and the rep usually shortens near the top.
Stop before you lock out
At the top, your legs should be nearly straight and the sled still under control, with your heels planted, back against the pad, and the handles steady. Soft knees keep the work in your quadriceps and glutes instead of dumping into a loose joint position.
You’ve gone too far if your knees snap back, your hips start to peel off the backrest, or the sled settles into a brief rest instead of staying loaded. In video, the rep should finish with clean extension, not a visible hard stop.
Lower under control
Lower the sled back to the start without collapsing the rep. Keep the return smooth enough that you can start the next rep without losing position.
Common form mistakes
Heel lift is the clearest sign your feet are losing contact with the plate. The rep starts to tip onto the toes instead of staying planted through the heel.
Shallow reps show up when the sled stops high and the knees never bend enough to give the upper legs real work. The motion looks controlled, but it stays short.
Knees collapsing inward is easy to catch from the front. They drift toward each other on the way down or drive up, and the rep loses a clean path.
Hard lockout is the other common miss. The sled bangs to the top, the knees straighten out, and the top turns from control into a rest.
Questions people have about the leg press
Yes, this is also called the 45 degree leg press or sled press, and the name usually changes with the machine, not the movement.
Corect can analyse this movement from a phone video and score its form, showing where the rep starts to break.
How Corect scores your reps
Phone video lets Corect check whether your setup and rep pattern stay consistent from rep to rep. It watches for drift in seat, footplate, and foot placement, then scores whether the movement stays controlled through the set.
If your reps change shape, it shows up in the way the sled moves, how deep you go, and whether the top position stays clean. A set that starts smooth and gets sloppy is easy to spot on video.
Leg Press: the movement, step by step
- Adjust the seat and footplate of the sled machine to a comfortable position.
- Sit on the sled machine with your back against the backrest and your feet shoulder-width apart on the footplate.
- Grip the handles on the sides of the seat for stability.
- Push the footplate away from your body by extending your legs, keeping your heels on the footplate.
- Continue pushing until your legs are almost fully extended, but without locking your knees.
- Pause for a moment at the top of the movement, then slowly lower the footplate back towards your body by bending your knees.
- Repeat for the desired number of repetitions.
Common questions
How should I set up the leg press machine?
Set the seat and footplate so you can sit all the way back with your lower back supported. If you have to curl your hips off the pad or reach for the sled, the setup is too far away; if your knees are jammed into your chest before you start, it is too close.
What should my feet and body do during the press?
Sit back against the backrest, place your feet shoulder-width apart, and hold the side handles for stability. Keep your torso pinned to the seat and your heels on the footplate as you press.
How do I know if my rep is getting sloppy?
Heel lift, shallow reps, knees collapsing inward, and hard lockout are the main mistakes to watch for. In video, the rep should stay smooth, controlled, and finish without the hips peeling off the backrest or the sled resting at the top.
What does Corect check in a leg press video?
Corect checks whether setup and rep pattern stay consistent from rep to rep. It watches for drift in seat, footplate, and foot placement, then scores whether the movement stays controlled through the set.
The hardest part of fixing any of this is that you cannot see yourself mid-rep. Corect reads your form from a phone video and shows you what actually happened on each rep of your leg press — depth, bar path, where the breakdown starts. Try it free.