Article

AIM: To compare three reaching movements made in two planes between a low-cost,
game-based virtual reality and a matched physical environment in typically
developing children and children with cerebral palsy (CP).
To determine if
differences in kinematics are related to sensory deficits. METHOD: An
observational study in which 27 children (typically developing, n=17, mean age
13y, [SD] 2y 2mo, range 9y 3mo-17y 2mo; CP, n=10, mean age 13y 8mo, [SD] 1y 8mo,
range 11y 1mo-17y 1mo, Manual Ability Classification System levels I-II)
performed 15 trials of three gestures in each of a virtual reality and a matched
physical environment. Upper-limb and trunk kinematics were recorded using an
electromagnetic system (G4, Polhemus, six markers, 120Hz). RESULTS: Compared to
the physical environment, movements in virtual reality made by typically
developing children were slower (p=0.002), and involved less trunk flexion
(p=0.002) and rotation (p=0.026). Children with CP had more curved trajectories
(p=0.005) and used less trunk flexion (p=0.003) and rotation (p=0.005). Elbow and
shoulder kinematics differed from 2.8% to 155.4% between environments in both
groups. Between groups, there were small, clinically insignificant differences
with only the vertical gesture being longer in typically developing children.
Children with CP who had greater tactile impairment used more trunk displacement.
INTERPRETATION: Clinicians and researchers need to be aware of differences in
movement variables when setting goals or designing protocols for improving
reaching in children with CP using low-cost, game-based virtual reality systems.
WHAT THIS PAPER ADDS: Upper-limb kinematics differed in each group when reaching
in physical versus virtual environments. There were small differences in
movements made by children with mild unilateral cerebral palsy (CP) compared to
typically developing children. Differences in reaching kinematics should be
considered when goal setting using virtual reality interventions for children
with mild unilateral CP.
CI - (c) 2018 Mac Keith Press.
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Langue : ANGLAIS