Poor performance signifies postural hypotension or vestibular dysfunction. Stand, with eyes closed, arms at sides, and feet about 3 inches apart. Watch for ability to stand without support and without sway or balance loss. Poor performance signifies proprioceptive loss. Normal reaction is to stretch out arms forward and away from body and to take a step or two backward to regain balance.
Poor performance signifies postural instability.
Bend down and reach, as if to pick up an object. Watch for ability to maintain balance. Watch for ability to walk and turn around without hesitation, excessive deviation from side to side, or feet scraping the floor. Get up from floor. Watch for ability to get up either unassisted or with the help of a chair for support.