The Leg Press

The leg press is a great compound movement meant to strengthen and build the front thighs. Standing movements such as the squat, puts a tremendous amount of pressure on the lower back. This exercise takes that pressure off, making it an ideal exercise for those of you who have problems with your lower back.

Primary muscle goups include the front thighs. Secondary muscle groups are the glutes (butt), and hamstrings. 
Position for the leg press

1. While seated on a leg press, place your feet about 1 feet (30 cm) apart under the leg press plate. Your buttocks should be supported on the seat and your back pressed firmly against back rest.

2. Your head should be straight and slightly angle your toes outward.

3. Grasp the handles and unhook the weight making sure your legs are ready to perform the lift.

Execution of the leg press 
1. Slowly bend your legs, allowing your knees to travel towards your chest.
2. Once your knees are at roughly 90 degrees, press your legs upwards until they are straightened