Physical function.
The Timed “Up & Go” Test was used to assess functional ability.31 This test demonstrated good intratester and intertester reliability (ICC .99) for a geriatric population as well as criterion validity. Participants were instructed to rise from a standard armchair, walk to a point on the floor 3 m away, return to the chair, and sit down again while being timed with a
stopwatch. Participants performed the test only once and at their own pace.