Minority Health Archive

Inverse relation between dietary fiber intake and visceral adiposity in overweight Latino youth

Davis, J. N and Alexander, K. E and Ventura, E. E and Toledo-Corral, C. M and Goran, M. I (2009) Inverse relation between dietary fiber intake and visceral adiposity in overweight Latino youth. American Journal of Clinical Nutrition, 90 (5). pp. 1160-1166. ISSN 0002-9165

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BACKGROUND: To date, no studies have assessed the longitudinal changes of dietary intake on metabolic risk factors in Latino youth. OBJECTIVE: We assessed the relation between changes in dietary intake, specifically sugar and fiber intakes, with changes in adiposity and risk factors for type 2 diabetes in a longitudinal analysis of overweight Latino youth. DESIGN: Overweight Latino youth (n = 85; aged 11-17 y) underwent the following measures over 2 y [mean (+/-SD) time difference was 1.5 +/- 0.5 y]: dietary intake by 2-d diet recalls, body composition by dual-energy X-ray absorptiometry and magnetic resonance imaging, and glucose and insulin indexes by oral- and intravenous-glucose-tolerance tests. Partial correlations and repeated-measures analysis of covariance assessed the relation between changes in dietary intake with changes in adiposity and glucose and insulin indexes, independent of the following a priori covariates: sex, Tanner stage, time between visits, and baseline dietary and metabolic variables of interest. RESULTS: Increases in total dietary fiber (g/1000 kcal) and insoluble fiber (g/1000 kcal) were associated with decreases in visceral adipose tissue (VAT) (r = -0.29, P = 0.02, and r = -0.27, P = 0.03, for total dietary and insoluble fiber, respectively), independent of baseline covariates and change in subcutaneous abdominal adipose tissue. Participants who had decreased total dietary fiber (mean decrease of 3 g . 1000 kcal(-1) x d(-1)) had significant increases in VAT compared with participants who had increased total dietary fiber (21% compared with -4%; P = 0.02). No other changes in dietary variables were related to changes in adiposity or metabolic variables. CONCLUSION: Small reductions in dietary fiber intake over 1-2 y can have profound effects on increasing visceral adiposity in a high-risk Latino youth population.

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Item Type: Article
Uncontrolled Keywords: metabolic risk factors, Latino youth, dietary intake, fiber intakes, visceral adiposity
Subjects: Health > Nutrition
Health > Prenatal & Pediatric Health
Health > Public Health > Chronic Illness & Diseases > Obesity
Research > studies
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Depositing User: Users 141 not found.
Date Deposited: 31 May 2011 11:23
Last Modified: 31 May 2011 11:23
Link to this item (URI): http://health-equity.lib.umd.edu/id/eprint/2541

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