Genetic and Environmental Influences on Developmental Milestones and Movement: Results from the Gemini Cohort study

Smith, Lee and van Jaarsveld, Cornelia H. M. and Llewellyn, Clare H. and Fildes, Alison and López Sánchez, Guillermo Felipe and Wardle, Jane and Fisher, Abigail (2017) Genetic and Environmental Influences on Developmental Milestones and Movement: Results from the Gemini Cohort study. Research Quarterly for Exercise and Sport, 88. pp. 401-407. ISSN 2168-3824

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Official URL: http://dx.doi.org/10.1080/02701367.2017.1373268

Abstract

Purpose: Variability in the timing of infant developmental milestones is poorly understood. We used a twin analysis to estimate genetic and environmental influences on motor development and activity levels in infancy. Method: Data were from the Gemini study, a twin birth cohort of 2402 families with twins born in the UK in 2007. Parents reported motor activity level for each of the twins at age 3 months using the Revised Infant Behavior Rating Scale (IBQ-R), and also reported the age at which they first sat unsupported, crawled, and walked unaided. Results: Activity level at 3 months, and age of first sitting and crawling were about equally influenced by the shared family environment (45%-54%) and genes (45%-48%). Genetic influences dominated for the age of taking first independent steps (84%). Conclusion: Aspects of the shared family environment appear to be important influences on motor activity levels and early milestones, although the timing of walking may have a stronger genetic influence. Further research to identify the specific environmental and genetic factors that promote early activity may be important for longer-term health outcomes.

Item Type: Journal Article
Keywords: Activity, Child, Motor, Twin
Faculty: ARCHIVED Faculty of Science & Technology (until September 2018)
Depositing User: Lee Smith
Date Deposited: 19 Sep 2017 15:23
Last Modified: 23 Apr 2019 16:15
URI: http://arro.anglia.ac.uk/id/eprint/702130

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