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Walking velocity (A), stride length (B), swing percent (C), stance percent (D), cadence (E), base of support (F) functional ambulation profile scores (G) and gait asymmetry (H) of individuals with PD (light gray bars), and Controls (black bars) in forward walking (FW), backward walking (BW), dual task forward walking (DT), and dual task backward walking (DTB). Values are means +/− SDs. *significant 3-way interaction among group, task and direction.
