Abstract:
AIM:Brain systems supporting higher cognitive and motor control develop in a parallel manner, dependent on functional integrity and maturation of related regions, suggesting neighbouring neural circuitry. Concurrent examination of motor and cognitive control can provide a window into neurological development. However, identification of performance-based measures that do not correlate with IQ has been a challenge. Method Timed motor performance from the Physical and Neurological Examination of Subtle Signs and IQ were analysed in 136 children aged 6 to 16 (mean age 10y 2.6mo, SD 2y 6.4mo; 98 female, 38 male) attending an outpatient neuropsychology clinic and 136 right-handed comparison individuals aged 6 to 16 (mean age 10y 3.1mo, SD 2y 6.1mo; 98 female, 38 male). Timed activities--three repetitive movements (toe tapping, hand patting, finger tapping) and three sequenced movements (heel-toe tap, hand pronate/supinate, finger sequencing) each performed on the right and left--were included in exploratory factor analyses. Results Among comparison individuals, factor analysis yielded two factors--repetitive and sequenced movements--with the sequenced factor significantly predictive of Verbal IQ (VIQ) (DeltaR(2)=0.018, p=0.019), but not the repetitive factor (DeltaR(2)=0.004, p=0.39). Factor analysis within the clinical group yielded two similar factors (repetitive and sequenced), both significantly predictive of VIQ, (DeltaR(2)=0.028, p=0.015; DeltaR(2)=0.046, p=0.002 respectively). Interpretation Among typical children, repetitive timed tasks may be independent of IQ; however, sequenced tasks share more variance, implying shared neural substrates. Among neurologically vulnerable populations, however, both sequenced and repetitive movements covary with IQ, suggesting that repetitive speed is more indicative of underlying neurological integrity.
journal_name
Dev Med Child Neuroljournal_title
Developmental medicine and child neurologyauthors
Martin R,Tigera C,Denckla MB,Mahone EMdoi
10.1111/j.1469-8749.2010.03670.xsubject
Has Abstractpub_date
2010-08-01 00:00:00pages
e188-94issue
8eissn
0012-1622issn
1469-8749pii
DMCN3670journal_volume
52pub_type
杂志文章abstract:AIM:The aim of this study was to review systematically evidence about the efficacy of motor interventions for children with developmental coordination disorder (DCD), and to quantify treatment effects using meta-analysis. METHOD:Included were all studies published between 1995 and 2011 that described a systematic revi...
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