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Journal of Obesity
Volume 2011, Article ID 239516, 6 pages
http://dx.doi.org/10.1155/2011/239516
Research Article

Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study

1Research Centre on Aging, University Institute of Geriatrics of Sherbrooke, 1036 Belvedere Street South, Sherbrooke, QC, Canada J1H 4C4
2Faculté d’Éducation Physique et Sportive, Université de Sherbrooke, 2500 de l’Université Boulevard, Sherbrooke, QC, Canada J1K 2R1
3Unité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, 110 des Pins Avenue West, Montreal, QC, Canada H2W 1R7
4Département de Nutrition, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada H3C 3J7
5School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Montpetit Hall, 125 University Avenue, Ottawa, ON, Canada K1N 6N5
6Behavioral and Metabolic Research Unit, Montfort Hospital, 713 Montreal Road, Ottawa, ON, Canada K1K 0T2

Received 29 October 2010; Revised 11 January 2011; Accepted 20 January 2011

Academic Editor: Renato Pasquali

Copyright © 2011 Caroline Y. Doyon et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. Subcutaneous fat (ScF) and visceral fat (VF) measurements using CT scan are expensive and may imply significant radiation doses. Cross-sectional studies using CT scan showed that ScF and VF are significantly correlated with abdominal fat measured by DXA (AF-DXA). The association has not been studied after a weight loss. Objective. To determine (1) the associations between AF-DXA and ScF and VF before and after weight loss and (2) the associations between their changes. Methods. 137 overweight/obese postmenopausal women were divided in two groups (1-caloric restriction or 2-caloric restriction + resistance training). AF was assessed using DXA and CT scan. Results. Correlations between AF-DXA and ScF (before: , after; ; ) and, AF-DXA and VF (before: , after; ; ) are not different before and after the weight loss. Correlations between delta AF-DXA and delta ScF ( ; ) or delta VF ( ; ) were found. Conclusion. The use of AF-DXA as a surrogate for VF after weight loss is questionable, but may be interesting for ScF.