Effort to reduce postural sway affects both cognitive and motor performances in individuals with Parkinson's disease

摘要

Objectives: To assess the effects of voluntarily reducing postural sway on postural control and to determine the attention level needed to do so in healthy adults (n = 16, 65.9 +/- 9.7) and persons with PD (n = 25, 65.8 +/- 9.5 years). Tasks: quiet and still standing conditions with and without a category task. Cognitive performance, center of pressure (CoP) displacement variability (RMSCoP) and velocity (VCoP) were assessed in the anterior posterior (AP) and medial-lateral (ML) directions.