Figure 2. The reach area (RA) task is a unilateral task that measures the total area encompassed while reaching in lateral, forward, and contralateral directions. (a) Subjects reached in a random order as far as possible without losing their balance in 4 directions and the maximum distance reached was recorded. (b) The measurements defined as RA. During reach, subjects placed the contralateral hand on the umbilicus to negate UE compensatory stabilization.