1
Sit on the leg extension machine with your back firmly against the backrest and upper legs parallel to the ground. Position your feet under the ankle pad with knees bent at approximately 90 degrees. Grip the handles on the sides of the seat for stability.
2
Adjust the machine so the pivot point aligns with your knee joint. Place the tops of your feet under the padded lever arm. Ensure your back remains flat against the backrest throughout the movement with core engaged.
3
Slowly lower the weight by bending your knees, allowing the lever arm to descend in a controlled manner. Lower until your knees reach approximately 90 degrees of flexion or slightly less, maintaining tension in the quadriceps without allowing the weight stack to touch down.
4
Drive through your front foot and extend your legs upward by contracting your quadriceps, pressing the lever arm away from your body. Extend until your knees reach near-full extension (stop just short of locking out the knees). Pause briefly at the top, then control the descent back to starting position.