Sled 45 degrees One Leg Press

How to do the Sled 45 degrees One Leg Press

1. 1Sit in the 45-degree sled machine and press your lower back, hips, and head firmly against the pad.
2. 2Place one foot flat in the center of the platform at roughly hip width, with your toes angled slightly outward; rest the other foot on the frame or floor.
3. 3Grip the handles at your sides to anchor your upper body and brace your core.
4. 4Disengage the safety stops and hold the sled with your working leg extended, stopping just short of full knee lockout.
5. 5Inhale and lower the sled under control by bending your working knee, keeping your heel flat on the platform and your knee tracking in line with your toes.
6. 6Continue the descent until your thigh reaches roughly parallel to the platform or your lower back just begins to lift off the pad — whichever comes first.
7. 7Exhale and drive evenly through your full foot to press the sled back up, extending your knee and hip simultaneously, and stop just short of full lockout.
8. 8Complete all reps on that leg, then re-engage the safety stops fully before removing your foot and switching to the other leg.
9. 9When finished with both legs, lock the safety stops securely before exiting the machine.

Form tips

• Position your foot so your knee tracks directly over your second and third toe throughout the descent and press — this protects the knee joint and ensures the gluteus maximus and quadriceps share the load evenly.
• Keep your lower back pressed firmly against the pad for the entire set; if it lifts away, reduce the range of motion until hip mobility improves.
• Control the descent over two to three seconds rather than letting the sled drop — the working muscles stay loaded longer and the risk of knee strain is reduced.
• Match the rep count and range of motion on both legs before adding weight, since the purpose of the unilateral variation is to correct imbalances rather than let the stronger side set the standard.
• Engage the safety stops every time you switch legs, even mid-workout, so the sled cannot descend uncontrolled while you reposition.

Common mistakes

• Letting the heel rise off the platform at the bottom of the rep, which transfers load away from the gluteus maximus and quadriceps and onto the knee — keep the entire foot flat throughout the movement.
• Allowing the knee to cave inward during the press, which places harmful valgus stress on the knee joint — actively drive your knee outward in line with your foot on every rep.
• Locking the knee out fully at the top, which shifts load from the muscles to the joint and reduces time under tension — stop just short of full extension.
• Using a range of motion so deep that the lower back rounds off the pad, which compresses the lumbar spine under load — shorten the range until hip mobility improves.
• Skipping the safety stops when switching legs or finishing the set, which risks the sled descending uncontrolled — always engage the stops before repositioning or exiting the machine.

Frequently asked questions