Associations between a priori- defined dietary patterns and longitudinal changes in bone mineral density in adolescents

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Monjardino, T (Author) Other; Lucas, R (Author) FMUP; Ramos E (Author) FMUP; Barros H (Author) FMUP

Journal

Title: Public Health Nutrition

Vol. 17 No. 6

Pages: 195-205

ISSN: 1368-9800

Publisher: Cambridge University Press

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 23 Citations

Other information

Authenticus ID: P-008-JBJ

DOI: 10.1017/s1368980012004879

Abstract (EN): 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/cm(2)) in the first and third tertiles was 0369 and 0368 for the MD pattern, 0368 and 0369 for the DASH diet, and 0370 and 0363 for the OHS index. In boys, mean BMD (g/cm(2)) in the first and third tertiles was 0338 and 0347 for the MD pattern, 0342 and 0346 for the DASH diet, and 0344 and 0342 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 = 0248; 95 % CI 0052, 0444). 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11