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Associations between a priori-defined dietary patterns and longitudinal changes in bone mineral density in adolescents.
MedLine Citation:
PMID:  23149164     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To quantify short- and long-term associations between dietary patterns defined a priori and bone mineral density (BMD) during adolescence. DESIGN: Dietary patterns were defined at 13 years old using a Mediterranean diet (MD) quality index, the Dietary Approaches to Stop Hypertension (DASH) diet index and the Oslo Health Study (OHS) dietary index. Linear regression coefficients were used to estimate associations between dietary patterns and forearm BMD at 13 and 17 years, measured by dual-energy X-ray absorptiometry. SETTING: Public and private schools of Porto, Portugal. SUBJECTS: The EPITeen cohort comprising 1180 adolescents born in 1990, recruited at schools during the 2003/2004 school year and re-evaluated in 2007/2008. RESULTS: In girls, at 13 years, mean BMD (g/cm2) in the first and third tertiles was 0·369 and 0·368 for the MD pattern, 0·368 and 0·369 for the DASH diet, and 0·370 and 0·363 for the OHS index. In boys, mean BMD (g/cm2) in the first and third tertiles was 0·338 and 0·347 for the MD pattern, 0·342 and 0·346 for the DASH diet, and 0·344 and 0·342 for the OHS index. None of these differences were significant. Mean BMD at 17 years and prospective variation were also not significantly different between tertiles of adherence to each score. However, a trend of increased BMD at 13 years with greater adherence to the MD pattern was observed in boys (adjusted coefficient = 0·248; 95 % CI 0·052, 0·444). CONCLUSIONS: The selected dietary patterns may not capture truly important dietary differences in determining BMD or diet may not be, beyond nutrient adequacy, a limiting determinant of BMD.
Authors:
Teresa Monjardino; Raquel Lucas; Elisabete Ramos; Henrique Barros
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  Public health nutrition     Volume:  -     ISSN:  1475-2727     ISO Abbreviation:  Public Health Nutr     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9808463     Medline TA:  Public Health Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-11     Citation Subset:  -    
Affiliation:
1 Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Al Prof Hernâni Monteiro, 4200-319 Porto, Portugal.
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