Influence of Vision and Attention on Gait Initiation in People with Parkinson Disease

This study investigated how vision and attention influence gait initiation in people with Parkinson disease compared to older adult controls. Sixteen participants in each group completed gait initiation under four visual conditions (unaltered input, partial occlusion, full occlusion, and additional visual stimuli) both with and without a cognitive dual task. We measured first step length, first step speed, and anticipatory postural adjustment size to assess performance across conditions. The design allowed us to examine the separate and combined effects of visual and attentional demands on gait initiation.