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

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 no...

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Main Authors: Caroline Y. Doyon, Martin Brochu, Virginie Messier, Marie-Ève Lavoie, May Faraj, Éric Doucet, Rémi Rabasa-Lhoret, Isabelle J. Dionne
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Journal of Obesity
Online Access:http://dx.doi.org/10.1155/2011/239516
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author Caroline Y. Doyon
Martin Brochu
Virginie Messier
Marie-Ève Lavoie
May Faraj
Éric Doucet
Rémi Rabasa-Lhoret
Isabelle J. Dionne
author_facet Caroline Y. Doyon
Martin Brochu
Virginie Messier
Marie-Ève Lavoie
May Faraj
Éric Doucet
Rémi Rabasa-Lhoret
Isabelle J. Dionne
author_sort Caroline Y. Doyon
collection DOAJ
description 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: r=0.87, after; r=0.87; P<.01) and, AF-DXA and VF (before: r=0.61, after; r=0.69; P<.01) are not different before and after the weight loss. Correlations between delta AF-DXA and delta ScF (r=0.72; P<.01) or delta VF (r=0.51; P<.01) were found. Conclusion. The use of AF-DXA as a surrogate for VF after weight loss is questionable, but may be interesting for ScF.
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spelling doaj-art-42662c7510bf4ec983c8ac0f61482cea2025-02-03T05:58:45ZengWileyJournal of Obesity2090-07082090-07162011-01-01201110.1155/2011/239516239516Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET StudyCaroline Y. Doyon0Martin Brochu1Virginie Messier2Marie-Ève Lavoie3May Faraj4Éric Doucet5Rémi Rabasa-Lhoret6Isabelle J. Dionne7Research Centre on Aging, University Institute of Geriatrics of Sherbrooke, 1036 Belvedere Street South, Sherbrooke, QC, J1H 4C4, CanadaResearch Centre on Aging, University Institute of Geriatrics of Sherbrooke, 1036 Belvedere Street South, Sherbrooke, QC, J1H 4C4, CanadaUnité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, 110 des Pins Avenue West, Montreal, QC, H2W 1R7, CanadaUnité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, 110 des Pins Avenue West, Montreal, QC, H2W 1R7, CanadaUnité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, 110 des Pins Avenue West, Montreal, QC, H2W 1R7, CanadaSchool of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Montpetit Hall, 125 University Avenue, Ottawa, ON, K1N 6N5, CanadaUnité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, 110 des Pins Avenue West, Montreal, QC, H2W 1R7, CanadaResearch Centre on Aging, University Institute of Geriatrics of Sherbrooke, 1036 Belvedere Street South, Sherbrooke, QC, J1H 4C4, CanadaIntroduction. 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: r=0.87, after; r=0.87; P<.01) and, AF-DXA and VF (before: r=0.61, after; r=0.69; P<.01) are not different before and after the weight loss. Correlations between delta AF-DXA and delta ScF (r=0.72; P<.01) or delta VF (r=0.51; P<.01) were found. Conclusion. The use of AF-DXA as a surrogate for VF after weight loss is questionable, but may be interesting for ScF.http://dx.doi.org/10.1155/2011/239516
spellingShingle Caroline Y. Doyon
Martin Brochu
Virginie Messier
Marie-Ève Lavoie
May Faraj
Éric Doucet
Rémi Rabasa-Lhoret
Isabelle J. Dionne
Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
Journal of Obesity
title Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
title_full Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
title_fullStr Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
title_full_unstemmed Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
title_short Association between Abdominal Fat (DXA) and Its Subcomponents (CT Scan) before and after Weight Loss in Obese Postmenopausal Women: A MONET Study
title_sort association between abdominal fat dxa and its subcomponents ct scan before and after weight loss in obese postmenopausal women a monet study
url http://dx.doi.org/10.1155/2011/239516
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