Seated, locked in, and ready to push serious weight.
Don't slam your knees into full lockout. Keep tension and let your back stay glued to the pad.
The horizontal leg press seats you upright and sends the platform straight out, letting the quads work through a deep knee bend with the glutes driving from the bottom, all while the back pad takes your spine out of the equation entirely. With no balance demand and no bar to control, effort translates directly into leg drive, which makes it ideal for pushing sets close to failure. It earns its place as the safest way to load the quads heavy, whether you are new to training or finishing a brutal leg day.
The seated horizontal version tends to feel gentler and more accessible, you sit into it rather than climbing under a sled, and the load path is level rather than angled above you. The muscles trained are the same, quads leading with glutes assisting.
Mid-platform and shoulder-width is the balanced default. Lower foot placement biases the quads harder, higher placement shifts work toward the glutes. Whatever you choose, keep your heels down through every rep.
As deep as you can go while your back and hips stay glued to the pad. The moment your hips start rolling under, you have passed your useful range, that curl is your depth limit, not a target to push through.
