Poster Topical Area: Nutritional Epidemiology
Location: Hall D
Poster Board Number: 756
Objectives: Abdominal obesity is a strong predictor of metabolic dysfunction, but it remains unclear whether overall diet pattern influences this body composition phenotype, especially in children. In this study, we examined associations of diet pattern with abdominal-to-peripheral body fat ratio (APR) in US children and adolescents.
Methods: Data from n=9,130 children (8-18 yrs) in the National Health and Nutrition Examination Survey 1999-2006 were used. Body composition was assessed by dual-energy x-ray absorptiometry and an APR (%) was calculated by dividing grams of trunk fat mass by the sum of arm and leg fat mass. Healthy Eating Index (HEI)-2015 total and component scores were calculated from 24-hour dietary recall data. Survey-weighted linear regression was used to assess associations of HEI scores with APR. Effect modification by sex and race was assessed and stratified if significant. Models were also adjusted for age, income level, total energy intake, and BMI percentile.
Results: Overall, the mean (± SE) for HEI total score was 42.6 (± 0.2) and for APR was 71.6% (± 0.3%). We found a significant association between higher HEI score and lower (more favorable) APR [β= -0.04 (95% CI: -0.08, -0.003)]. However, this association was modified by race, such that in stratified analyses the association of HEI with APR was only significant among non-Hispanic white children. For individual HEI components, after controlling for HEI total score, total and whole fruit scores were significantly inversely associated with APR among non-Hispanic white children only (p<0.01 for both), and fatty acid ratio [(MUFA+PUFA)/saturated fat] score was significantly positively associated with APR among children of "other" race/ethnicity only (p<0.05).
Conclusions: These findings suggest that, among US children and adolescents, the relationship between overall diet pattern, assessed in relation to the Dietary Guidelines for Americans, and APR appears to be moderated by race, as the association was only significant among non-Hispanic white children. More research is warranted on factors contributing to abdominal obesity in other racial/ethnic subgroups<./p>