The Nature and Control of Postural Adaptations of Boys with and Without Developmental Coordination Disorder
in Adapted Physical Activity QuarterlyBy purchasing this content you agree and accept the terms and conditions
This study compared the nature of postural adaptations and control tendencies, between 7 (n = 9) and 11-year-old boys (n = 10) with Developmental Coordination Disorder (DCD) and age-matched, younger (n = 10) and older (n = 9) peers in a leaning task. Examination of anterior-posterior, medio-lateral, maximum and mean area of sway, and path length revealed one significant interaction as older, unaffected boys swayed more than all other groups (p < .01). As a group, boys with DCD displayed smaller anterior-posterior (p < .01) and area of sway (p < .01). Analysis of relative time spent in the corrective phase (p < .002) revealed that boys with DCD spent 54% under feedback control while boys without DCD spent 78%. This was attributed to reduced proprioceptive sensitivity, as confirmed by significant differences between the groups (p < .009) in spectral analysis of peak frequency of sway.
Eryk P. Przysucha is now with the School of Kinesiology, Lakehead University, Thunder Bay, Ontario. E-mail: eprzysuc@lakehead.edu. M. Jane Taylor is with the School of Kinesiology at Lakehead University in Thunder Bay, Ontario, Canada. E-mail: jane.taylor@lakeheadu.ca. Douglas Weber is with the Department of Physical Medicine & Rehabilitation at the University of Pittsburgh, Pittsburgh, PA. E-mail: djw50@pitt.edu.
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