title: The nature and control of postural adaptations of boys with and without developmental coordination disorder.
abstract: 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.
authors.affiliation: University of Alberta.
authors.forename: Eryk P
authors.initials: EP
authors.lastname: Przysucha
authors.forename: M Jane
authors.initials: MJ
authors.lastname: Taylor
authors.forename: Douglas
authors.initials: D
authors.lastname: Weber
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000367:Age Factors; D001676:Biofeedback, Psychology / Q000502:physiology; D016022:Case-Control Studies; D002648:Child; D006801:Humans; D008297:Male; D019957:Motor Skills Disorders / Q000503:physiopathology*; D004856:Postural Balance / Q000502:physiology*; D011434:Proprioception / Q000502:physiology; D013647:Task Performance and Analysis