The influence of task paradigm on motor imagery ability in children with Developmental Coordination Disorder

•Visually Guided Pointing Task and Virtual Radial Fitts Task both measure aspects of motor imagery.•Children with DCD have difficulty enlisting motor imagery.•Virtual Radial Fitts Task is the more sensitive test for discriminating between DCD and TD children. The complex Virtual Radial Fitts Task ap...

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Veröffentlicht in:Human movement science 2015-12, Vol.44, p.81-90
Hauptverfasser: Ferguson, G.D., Wilson, P.H., Smits-Engelsman, B.C.M.
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container_title Human movement science
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creator Ferguson, G.D.
Wilson, P.H.
Smits-Engelsman, B.C.M.
description •Visually Guided Pointing Task and Virtual Radial Fitts Task both measure aspects of motor imagery.•Children with DCD have difficulty enlisting motor imagery.•Virtual Radial Fitts Task is the more sensitive test for discriminating between DCD and TD children. The complex Virtual Radial Fitts Task appears to be a more robust test. Children with Developmental Coordination Disorder (DCD) have difficulty imagining movements such that they conform to the customary temporal constraints of real performance. We examined whether this ability is influenced by the choice of task used to elicit motor imagery (MI). Performance of typically developing (TD) (n=30) and children with DCD (n=30) was compared on two tasks: the Visually Guided Pointing Task (VGPT) and the Computerized Virtual Radial Fitts Task (C-VRFT). Since the VGPT places higher demands on executive functions like working memory but requires less spatial planning, we reasoned that the C-VRFT would provide a purer measure of motor imagery (or simulation). Based on our earlier work, we predicted that imagery deficits in DCD would more likely manifest on the C-VRFT. Results showed high correlations between tasks in terms of executed and imagined movement time suggest that both tasks measure MI ability. However, group differences were more pronounced in the imagined condition of the radial Fitts’ task. Taken together, the more spatially complex C-VRFT appears to be a more sensitive measure of motor imagery, better discriminating between DCD and TD. Implications for theory and practice are discussed.
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subjects Aptitude
Biomechanical Phenomena
Child
Children
Developmental Coordination Disorder
Executive Function
Female
Fitts’ law
Humans
Imagination
Kinesthesis
Male
Mental chronometry
Motor imagery
Motor Skills
Motor Skills Disorders - diagnosis
Motor Skills Disorders - psychology
Orientation
Psychomotor Performance
User-Computer Interface
title The influence of task paradigm on motor imagery ability in children with Developmental Coordination Disorder
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