Factors related to longitudinal changes in body fat in people with HIV/AIDS
Keywords:
BODY MASS INDEX, ANTI-RETROVIRAL AGENTS/Treatment, ADIPOSITY, ACQUIRED IMMUNODEFICIENCY SYNDROME, PATIENT.Abstract
Introduction: despite antiretroviral treatment (ART) and its current wide coverage, HIV/AIDS continues as an increasing health problem, and with it, alterations in body composition.
Objective: to assess the influence of individual factors, HIV and ART, on the longitudinal changes in body fat in people with HIV/AIDS.
Methods: longitudinal-retrospective study that included the data of 159 HIV/AIDS people from Pinar del Río, Cuba, (72.3% men) with at least three determinations of body mass index, tricipital skin-fold thickness, waist and hip circumference, over a period of 1.3 years. Longitudinal models with two levels were estimated using multilevel regression for repeated measurements.
Results: only waist circumference and waist-to-hip ratio (WHR) showed significant longitudinal changes (p<0.001). Sex, time with ART and the initial WHR were the predictor variables that contributed significantly (p<0.1) to the increase of the WHR in the regression models. Male sex contributed with an increase of 4.2% to the waist-to-hip ratio (WHR). For each year with antiretroviral treatment the WHR increased by 0.63% and the WHR that the individuals had at the end of the study represented 78.1% of the initial WHR plus a constant value of 20%.
Conclusions: the indicators of the central abdominal fat were the most useful to estimate the longitudinal changes of body fat index in HIV/AIDS individuals, the initial WHR was the best predictor of this indicator at the end of the follow-up period.
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