671261.fig.001a
(a)
671261.fig.001b
(b)
671261.fig.001c
(c)
Figure 1: Gait speed (a), response latency (b), and response accuracy (c) for all groups in the single-task (ST; for reference) and both dual-task conditions. Red squares show data for healthy young adults. Orange triangles show data for healthy older adults. Purple circles show data for people with PD. Symbols represent means and bars show standard errors.