Exercise execution guide
Standing in the "hack squat" machine, trapezes under the pads, feet on the footrest, shoulder-width apart.
Release the manual safety catch and slowly bend the knees. When your knees are at a 90° angle, pause for a moment and then slowly raise the load. Keep your back firmly against the backrest.
To protect your knees, in the high position, stop the movement just before your legs are fully extended.