Targets the quadriceps.
Sit on a leg extension machine with the back pad of the seat at more than a 90 degree angle, your back making contact with the back pad of the seat and the back of your knees in front of the edge of the seat. Your ankles are below the bottom pad and your lower legs are slightly in front of the seat. Your back isn’t tilted. Your chest is up. Grip the side bars to keep your body on the seat. Straighten your legs while keeping your knees pointed straight. You can increase or decrease the distance between your thighs while keeping your knees pointed straight to avoid knee problems. Don’t move the rest of your body. Contract your quadriceps. Return to the starting position.