• Media type: E-Article
  • Title: Timing of Excess Weight Gain in the Avon Longitudinal Study of Parents and Children (ALSPAC)
  • Contributor: Hughes, Adrienne R.; Sherriff, Andrea; Lawlor, Debbie A.; Ness, Andrew R.; Reilly, John J.
  • Published: American Academy of Pediatrics (AAP), 2011
  • Published in: Pediatrics, 127 (2011) 3, Seite e730-e736
  • Language: English
  • DOI: 10.1542/peds.2010-0959
  • ISSN: 0031-4005; 1098-4275
  • Origination:
  • Footnote:
  • Description: OBJECTIVES: To test the hypothesis that most excess weight gain occurs by school entry in a large sample of English children, and to determine when the greatest gain in excess weight occurred between birth and 15 years. METHODS: Longitudinal data were collected annually from birth to 15 years in 625 children. Weight and BMI at each time point were expressed relative to UK 1990 growth reference as z scores. Excess weight gain was calculated as the group increase in weight and BMI z scores between specific time periods. RESULTS: Weight z score did not increase from birth to 5 years (mean difference: 0.04 [95% confidence interval (CI): −0.03–0.12] P = .30) but increased from 5 to 9 years (mean difference: 0.19 [95% CI: 0.14–0.23] P < .001). BMI z score increased from 7 to 9 years (mean difference: 0.22 [95% CI: 0.18–0.26] P < .001), with no evidence of a large increase before 7 years and after 9 years. CONCLUSIONS: Our results do not support the hypothesis that most excess weight gain occurs in early childhood in contemporary English children. Excess weight gain was substantial in mid-childhood, with more gradual increases in early childhood and adolescence, which indicates that interventions to prevent excess weight should focus on school-aged children and adolescents as well as the preschool years.