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Age of Achievement of Gross Motor Milestones in Infancy and Adiposity at Age 3 Years

Abstract  

Early life physical activity may help prevent obesity but is difficult to measure. The purpose of this study was to examine
associations of age of achievement of gross motor milestones in infancy with adiposity at age 3 years. Seven forty one mother/infant
dyads participated in a longitudinal study in Massachusetts. Exposures were age of attainment of 4 gross motor milestones—rolling
over, sitting up, crawling, and walking. Outcomes were 3-year sum of subscapular and triceps skinfold thickness (SS + TR)
for overall adiposity, their ratio (SS:TR) for central adiposity, and body mass index (BMI) z-score. We used linear regression
models adjusted for confounders to examine motor milestone achievement and later adiposity. Rolling over (0.04, 95% CI: 0.008,
0.07) and sitting up (0.02, 95% CI: 0.001, 0.05) at ≥6 months were associated with increased SS:TR compared with attainment
before 6 months. Walking at ≥15 months was associated with 0.98 mm higher SS + TR (95% CI: 0.05, 1.91) compared with walking
before 12 months. Age at crawling was not associated with the outcomes. None of the milestones were associated with BMI z-score.
Age of motor milestone achievement was only a modest predictor of adiposity. Later rolling over and sitting up were associated
with greater central adiposity, and later age at walking was associated with greater overall adiposity at age 3 years. Although
we controlled for birth weight and 6-month weight-for-length in our models, more detailed assessment of early adiposity prior
to achievement of motor milestones is needed to help determine causality.

  • Content Type Journal Article
  • Pages 1-6
  • DOI 10.1007/s10995-011-0828-3
  • Authors
    • Sara E. Benjamin Neelon, Department of Community and Family Medicine, Duke University Medical Center and Duke Global Health Institute, Durham, NC, USA
    • Emily Oken, Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA, USA
    • Elsie M. Taveras, Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA, USA
    • Sheryl L. Rifas-Shiman, Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA, USA
    • Matthew W. Gillman, Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA, USA
    • Journal Maternal and Child Health Journal
    • Online ISSN 1573-6628
    • Print ISSN 1092-7875
Posted in: Journal Article Abstracts on 06/09/2011 | Link to this post on IFP |
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