05/02/2026
This has been my preferred way to do unilateral leg extensions for some time now. I’ve made a few stories about them in the past, but I thought these deserved a post. You might like these better, you might not.. but hopefully some of y’all find this helpful.
I feel less knee discomfort, it’s more stable, and it’s more comfortable. If you want to further increase stability, you can use a seatbelt to help pull the hips down. But, you should be actively pulling down with the handles anyway for the whole set. Don’t be one of those guys/gals who do their leg extensions with their hands on their head/body, you are severely limiting stability, reducing motor unit recruitment (less gains).
Other tips (can be applied to bilateral variant):
• Actively pull yourself down into the seat with the handles. It’s important to keep the working-side hip down to avoid excessive torque at the knee and hip. This will result in better stability, and will make it easier to standardize form.
• Maintain a neutral foot position with it pointed up. A common misconception is that internal/external rotation will bias different parts of the quadricep. This isn’t accurate despite electromyography (EMG) research suggesting it to be. Whereas the vastus muscles (inner & outer quads) differ in their origin, they come down together surrounding the patellar tendon at the same insertion point. EMG isn’t measuring actual mechanical tension; thus it does not always reflect the hypertrophic potential of an exercise/technique. All the rotation will do is make the mechanics worse and cause more shearing forces on the knee.
• Knee lined up with the machine’s axis of rotation (don’t sit too far forward/back). You’ll feel knee discomfort right away if your setup is off. Line it up with the pivot point to avoid unnecessary joint stress.
• Don’t force full lockout if it causes knee pain. Stop just shy of lockout if going all the way up causes you discomfort. If it doesn’t, use that end range.
For $1 a day, join my app for the best ongoing science-based hypertrophy training, coaching, and community to guarantee the fastest gains.
1:1 coaching available.
Code: