Control of Stance and Developmental Coordination Disorder: The Role of Visual Information

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Eryk P. Przysucha University of Alberta

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M. Jane Taylor Lakehead University

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The purpose of this study was to compare the postural sway profiles of 20 boys with and without Developmental Coordination Disorder (DCD) on two conditions of a quiet standing task: eyes open and eyes closed. Anterior-posterior (AP) sway, medio-lateral sway (LAT), area of sway, total path length, and Romberg’s quotient were analyzed. When visual information was available, there was no difference between groups in LAT sway or path length. However, boys with DCD demonstrated more AP sway (p < .01) and greater area of sway (p < .03), which resulted in pronounced excursions closer to their stability limits. Analysis of Romberg’s quotient indicated that boys with DCD did not over-rely on visual information.

Eryk Przysucha is a doctoral student with the Faculty of Physical Education and Recreation at the University of Alberta, Edmonton, Alberta, Canada T6G 2H9 E-mail: eryk@ualberta.ca. M. Jane Taylor is with the School of Kinesiology at Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1. E-mail: jane.taylor@lakeheadu.ca.

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