[header] How to measure lower body strength [title] Stand with your back flat against a wall. [step] Keep your feet about a foot away from the wall and shoulder width apart. [title] Bend your knees and slide down the wall until you are in a squat position. 
[step] Be sure to keep the small of your back pressed firmly against the wall with no arching. Pay careful attention to your knees to make sure they are aligned properly over your toes.