The Over head Squat Test is just one of many in the Fit Responder Book/Program, it happens to be my favorite because of its simplicity and accuracy. The bigger question now is what do you do after pattern/movement dysfunction has been identified? Believe it or not the answer is easier and cheaper than you think, but that is for another column.
Performing the Overhead Squat Test
Preparation: Stand facing a full mirror, feet shoulder width apart, toes straight. Hold a broom stick overhead with elbows locked.
Movement: Perform a squat, just like sitting down in a chair. Avoid letting the heels come up off the floor, keep your elbows locked.
Knees: They should have remained straight ahead, no rolling in or out.
Feet: They should have stayed straight and level.
Pelvis: Should not have twisted to either side.
Torso: Should have had only a slight lean forward, with a small arch in the lower back.