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Antivir Ther. 2017;22(7):577-586. doi: 10.3851/IMP3148. Epub 2017 Mar 1.

Changes in abdominal fat following antiretroviral therapy initiation in HIV-infected individuals correlate with waist circumference and self-reported changes.

Author information

1
Present address: Center for HIV Identification, Prevention, and Treatment Services (CHIPTS), University of California, Los Angeles, Los Angeles, CA, USA.
2
Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA.
3
Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.
4
Departments of Pediatrics and Medicine, Case Western University, Cleveland, OH, USA.
5
Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
6
Center for Biostatistics in AIDS Research, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
7
Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA.
8
Department of Medicine, School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.

Abstract

BACKGROUND:

We examined whether waist circumference (WC) and self-reported abdominal size changes can estimate visceral adipose tissue (VAT) changes for those initiating antiretroviral therapy (ART).

METHODS:

Prospectively collected data from ACTG A5257 and its metabolic substudy, A5260s, were used for this analysis. ART-naive HIV-infected participants were randomized to one of three contemporary ART regimens. Changes in abdominal CT-measured VAT and total adipose tissue (TAT) and DXA-measured trunk fat were tested for association with WC changes (by Pearson correlation) and categories of self-reported abdominal size changes (by ANOVA) between entry and week 96. Linear models compared WC and self-reported changes.

RESULTS:

The study population (n=328) was predominantly male (90%) and White non-Hispanic (44%) with a baseline median age of 36 years and body mass index of 25 kg/m2. At week 96, median WC change was +2.8 cm. Of those reporting at week 96, 53% indicated 'no change/lost', 39% 'gained some/somewhat larger' and 8% 'gained a lot/much larger' as their self-reported changes. Trunk fat, VAT and TAT changes differed across self-reported groups (ANOVA P<0.0001 for all), and the group ordering was as expected. WC changes were strongly correlated with CT and DXA changes (trunk fat: ρ=0.72, p<0.0001; VAT: ρ=0.52, p<0.0001; TAT: ρ=0.62, p<0.0001). While WC changes explained a greater proportion of VAT, TAT and trunk fat variation, self-reported changes remained a significant predictor after controlling for WC (p<0.05).

CONCLUSIONS:

WC and self-reported abdominal changes each correlated directly with imaging-derived abdominal fat measures, and can be used as reliable, affordable tools for central adiposity assessment.

PMID:
28248190
PMCID:
PMC5610106
DOI:
10.3851/IMP3148
[Indexed for MEDLINE]
Free PMC Article

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