J Mot Behav
a School of Sport Science , Exercise & Health, The University of Western Australia, Crawley , Australia.
Published: September 2018
It has been hypothesized that deficits in imitation, linked to abnormal functioning of the mirror neuron system (MNS), may contribute to the motor impairments associated with developmental coordination disorder (DCD). The authors aimed to examine imitation of complex novel postures and sequences of gestures in children with and without probable DCD (pDCD), using the postural praxis and sequencing praxis subtests of the Sensory Integration and Praxis Tests (Ayres, 1989 ). Participants were 29 boys with pDCD between 6.08 and 13.33 years old, and 29 group age-matched typically developing boys between 6.08 and 13.83 years old. Responses of children with pDCD on both imitation tasks were less accurate than controls, with group differences more apparent with increasing task complexity. Furthermore, as a group, children with pDCD were slower and had a higher number of non-mirror-imitated responses. There was considerable variability within the pDCD group, with some children displaying imitation scores within the normative range. Given the importance of imitation and visual learning for motor development, the difficulties in imitation displayed by some children with pDCD have the potential to impact on movement acquisition. Interventions to target imitation may be beneficial for these children. The results show that children with pDCD had difficulty imitating complex novel postures, children with pDCD had difficulty imitating gesture sequences, children with pDCD had slower responses than controls, group differences in imitation performance increased with task complexity, and not all children with pDCD displayed imitation deficits.
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http://dx.doi.org/10.1080/00222895.2016.1219305 | DOI Listing |
Res Dev Disabil
January 2025
Department of Physical Activity, Sport and Recreation, Faculty Health Sciences, North-West University, Potchefstroom, South Africa; Department of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
Introduction: Despite the widespread use of the Movement Assessment Battery for Children, 2nd edition (MABC-2), little is known about the sensitivity or specificity of the individual items to detect probable Developmental Coordination Disorder (p-DCD). This study examined which specific MABC-2 items were most sensitive to identify children with p-DCD and which items would predict p-DCD.
Methods: Based on a large dataset including European and African children aged 3-16 years (n = 4916, typically developing (TD, 49.
Dev Med Child Neurol
December 2024
School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia.
Aim: To compare the device-measured physical activity behaviours of preschool children with typical motor development to those with probable developmental coordination disorder (pDCD) and at risk for developmental coordination disorder (DCDr).
Method: A total of 497 preschool children (4-5 years) in the Coordination and Activity Tracking in CHildren (CATCH) study completed repeated motor assessments and wore an ActiGraph GT3X on the right hip at baseline for 1 week. We calculated physical activity metrics from raw accelerometer data using a validated random forest classification machine learning model for preschool-age children.
Med Sci Sports Exerc
November 2024
Child Health & Exercise Medicine Program, Department of Pediatrics, McMaster University, Hamilton, Ontario, CANADA.
Purpose: Developmental Coordination Disorder (DCD) is a common neurodevelopmental disorder characterized by motor impairments and subsequent physical activity (PA) deficits in middle childhood. It is not well understood when this gap in PA emerges. The purpose of the current study was to examine the longitudinal trajectories of device-assessed PA in a large cohort of children with and without DCD from age 4 to 8.
View Article and Find Full Text PDFFront Hum Neurosci
July 2024
Department of Psychology, City University of London, London, United Kingdom.
Adults with Developmental Coordination Disorder (DCD), sometimes referred to as dyspraxia, experience difficulties in motor development and coordination, which impacts on all aspects of their daily lives. Surprisingly little is known about the mechanisms underlying the difficulties they experience in the motor domain. In childhood DCD, aspects of oculomotor control have been shown to be altered.
View Article and Find Full Text PDFNeurology
August 2024
From the Zickler Family Prenatal Pediatrics Institute (O.F., K. Christoffel, K. Cilli, J.L.F.), Department of Radiology (J.W.S.), Rare Disease Institute (J.L.F.), and Center for Genetic Medicine Research (J.L.F.), Children's National Hospital, Washington, DC; Departments of Neurology and Rehabilitation Medicine (K. Christoffel), Radiology (J.W.S.), and Pediatrics (J.L.F.), George Washington University School of Medicine and Health Sciences, Washington, DC; Departments of Pediatrics (A.B.S.) and Neurology (A.B.S.), University of Texas Southwestern Medical Center, Dallas; Division of Neurology (C.V.), Cincinnati Children's Hospital Medical Center; Department of Pediatrics (C.V.), University of Cincinnati College of Medicine, OH; Department of Radiology (C.A.), Boston Children's Hospital, MA; Division of Human Genetics (R.D.G.), Children's Hospital of Philadelphia; and Department of Pediatrics (R.D.G.), University of Pennsylvania Perelman School of Medicine, Philadelphia.
Background And Objectives: Pyruvate dehydrogenase complex deficiency (PDCD) is a disorder of mitochondrial metabolism that is caused by pathogenic variants in multiple genes, including . Typical neonatal brain imaging findings have been described, with a focus on malformative and encephaloclastic features. Fetal brain MRI in PDCD has not been comprehensively described.
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