Figure 1.

Figures A-H depict a top-down schematic view of the feet placement with respect to the forceplate location during the five tasks. The shaded foot represents the direction of maximal weight shifting during the unilateral tasks of lateral, forward, and backwards weight shifting. For the bilateral tasks, quiet standing and rising from a chair, both feet are shaded grey, as the task requires the individual to bear weight through both feet as equally as possible. The following figures depict the task and corresponding foot orientation: a) Quiet Standing, b) rising from a chair (4 legs of the chair are represented as black filled circles with subject’s feet on F2 and F3), c) lateral weight shift to the left foot, d) lateral weight shift to the right foot, e) forward weight shift to the right foot, f) backwards weight shift to the left foot, g) forwards weight shift to the left foot, and h) backwards weight shift to the right foot.