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Components of the diet associated with child adiposity: a cross-sectional study

Ledoux, Tracey A., Watson, Kathy, Barnett, Anthony, Nguyen, Nga T., Baranowski, Janice C. and Baranowski, Tom 2011, Components of the diet associated with child adiposity: a cross-sectional study, Journal of the American college of nutrition, vol. 30, no. 6, pp. 536-546, doi: 10.1080/07315724.2011.10720000.

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Title Components of the diet associated with child adiposity: a cross-sectional study
Author(s) Ledoux, Tracey A.
Watson, Kathy
Barnett, Anthony
Nguyen, Nga T.
Baranowski, Janice C.
Baranowski, Tom
Journal name Journal of the American college of nutrition
Volume number 30
Issue number 6
Start page 536
End page 546
Total pages 11
Publisher American College of Nutrition
Place of publication Clearwater, Florida
Publication date 2011
ISSN 0731-5724
Keyword(s) child obesity
diet
dietary intake reporting error
confounding
physical activity
Summary Objective:
This study sought to determine which components of youths' diets were related to adiposity while controlling for potential often-neglected confounders such as moderate to vigorous physical activity (MVPA) and dietary reporting error. Secondary goals of this study were to determine the extent to which MVPA confounded the associations between diet and adiposity and whether associations between diet and adiposity would differ depending on reporting error.

Methods:
An ethnically diverse urban sample of 342 children aged 9–10 years and 323 adolescents aged 17–18 years were recruited for this cross-sectional study. Body mass index (BMI) and waist circumference (WC) were measured in the school; dietary assessment included three 24-hour recalls via telephone in the evenings, and MVPA assessment included 5 days of accelerometry. Over (n = 68), under (n = 250), or plausible (n = 347) dietary intake reporters were identified with the Huang calculation method. Linear regression assessed the relationship between adiposity indicators (BMI z-score and WC) and components of the diet (energy intake, food groups, macronutrients) after controlling for reporting error, demographic variables, and MVPA.

Results:
When dietary reporting error and potential confounders such as MVPA and demographic variables were controlled, energy intake (EI), vegetables, refined grains, total fat, total protein, and total carbohydrate were positively related to BMI z-score and WC and artificially sweetened beverages to WC. MVPA was a significant confounder. For BMI z-score, but not WC, relationships and strength of these relationships differed depending on dietary reporting error group (plausible, underreporter, overreporter).

Conclusions:
Among plausible reporters, as expected, EI, refined grains, and all macronutrients were positively related to adiposity; however, artificially sweetened beverages and vegetables, which are low-energy-dense foods, were also positively related to adiposity. Reporting error interfered with associations between diet and BMI z-score but not WC, suggesting WC is a more robust measure of adiposity in relation to diet.
Language eng
DOI 10.1080/07315724.2011.10720000
Field of Research 111104 Public Nutrition Intervention
Socio Economic Objective 920411 Nutrition
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30058725

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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Created: Tue, 03 Dec 2013, 09:45:57 EST by Anthony Barnett

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