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  • Title: Motor behaviour in infancy is associated with neurological, cognitive, and behavioural function of children born to parents with reduced fertility.
    Author: Wu YC, Heineman KR, La Bastide-Van Gemert S, Kuiper D, Drenth Olivares M, Hadders-Algra M.
    Journal: Dev Med Child Neurol; 2020 Sep; 62(9):1089-1095. PubMed ID: 32222973.
    Abstract:
    AIM: To evaluate the associations between motor development in infancy and developmental outcomes at school age. METHOD: Participants were 195 children (99 males, 96 females; mean age [SD] 9y 3mo [3mo], range 8y 4mo-10y 11mo) born to couples whose reduced fertility was or was not treated with assisted reproductive technologies. Motor behaviour was assessed at 4, 10, and 18 months with the Infant Motor Profile (IMP). IQ, neurological optimality score (NOS), and behavioural problem scores were measured at 9 years with the Wechsler Abbreviated Scale of Intelligence, minor neurological dysfunction assessment, and the Child Behavior Checklist respectively. RESULTS: Children with a slow developmental trajectory in the IMP-domain adaptability had an IQ 12.6 points lower (95% confidence interval [CI] 4.7-20.4) and an NOS 3.4 points lower (95% CI 0.7-6.2) at 9 years of age than children with typical adaptability development. Children with a slow developmental trajectory in the IMP-domain performance had an IQ 5.0 points lower (95% CI 0.7-9.3) than children with typical performance development. A non-optimal trajectory in IMP-variation and a fluctuating trajectory in IMP-fluency were associated with higher internalizing scores of 3.6 and 5.8 points respectively, than infants with optimal IMP-domain trajectories. INTERPRETATION: In relatively low-risk children, motor behaviour in infancy was associated with neurological, cognitive, and behavioural function at school age.
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