Gait speed-dependent foot placement control in persons with chronic stroke and controls

Foot placement control exhibits a curvilinear relationship with gait speed in PwCS and controls, with less control at slow speeds in both groups. While PwCS show consistent foot placement control impairments compared to controls across all speeds, paretic impairments increase at higher speeds. These speed-sensitive paretic impairments likely reflect the inability to adapt to increased sensorimotor demands during faster gait.