Document Detail

Predictors of body mass index change from 11 to 15 years of age: the 1993 Pelotas (Brazil) birth cohort study.
MedLine Citation:
PMID:  23283164     Owner:  NLM     Status:  MEDLINE    
PURPOSE: We explored predictors of nutritional status change from 11 to 15 years of age by analyzing prospective data.
METHODS: We collected data at 11 and 15 years of age from individuals born in 1993 in Pelotas, Brazil. We assessed nutritional status using body mass index (BMI) for age in z-score according to the World Health Organization 2007 standards. Independent variables collected at 11 years of age were socioeconomic position, adolescent's perception of own weight, body dissatisfaction, and weight loss dieting.
RESULTS: Of the 4,032 adolescents whose nutritional status could be evaluated in the two follow-ups, 93% maintained their nutritional status classification from 11 to 15 years. A total of 102 (2.8%) became obese and 181 (4.5%) ceased to be obese in the 4-year period. The prevalence of obesity decreased from 11 to 15 years of age in both boys and girls. Low-income girls were more likely to become obese from 11 to 15 years of age compared with high-income ones. Among boys, those with high income were more likely to cease being obese compared those with low income. Those who perceived themselves to be obese, who wished to have a smaller silhouette, and who were on diets to lose weight were more likely to become obese or to achieve a normal BMI category at 15 years of age.
CONCLUSIONS: BMI tracks strongly in early adolescence. This finding suggests that interventions to more effectively change nutritional status should be implemented in childhood and should consider emotional aspects as well as social and biological ones.
Maria Cecília F Assunção; Ludmila C Muniz; Samuel C Dumith; Valerie L Clark; Cora L P Araújo; Helen Gonçalves; Ana M B Menezes; Pedro C Hallal
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-11-10
Journal Detail:
Title:  The Journal of adolescent health : official publication of the Society for Adolescent Medicine     Volume:  51     ISSN:  1879-1972     ISO Abbreviation:  J Adolesc Health     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2013-01-03     Completed Date:  2013-03-04     Revised Date:  2014-05-20    
Medline Journal Info:
Nlm Unique ID:  9102136     Medline TA:  J Adolesc Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S65-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
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MeSH Terms
Body Image
Body Mass Index*
Brazil / epidemiology
Cohort Studies
Diet, Reducing
Nutritional Status*
Obesity / epidemiology*
Social Class
Weight Loss
Grant Support
//Wellcome Trust

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