Prevalence and associated factors related to sarcopenia in people living with HIV/AIDS.

Background: The use of antiretrovirals has increased the survival of People Living with HIV/AIDS (PLWHA), resulting in an aging population and a rise in the incidence of sarcopenia. The lack of uniformity among the prevalences found in studies may be associated with the use of different diagnostic criteria, highlighting the need for local studies to determine the prevalence of sarcopenia.

Methods: Cross-sectional study to estimate the prevalence and associated factors of sarcopenia using the revised criteria of the European Working Group on Sarcopenia in Older People (EWGSOP2). This study included PLWHA of both sexes, aged 40 years or older, who were treated at the infectious disease outpatient clinic of a tertiary hospital from 2019 to 2021. Muscle mass was quantified through electrical bioimpedance, using resistance and reactance to calculate appendicular lean mass (ALM) in kg/m². Muscle strength, measured in kg, was assessed using a manual dynamometer, and muscle function was evaluated using the gait speed test (m/s). Numerical variables were analyzed using measures of central tendency and dispersion. The chi-square test was used to assess associations in categorical variables. Odds ratios (OR) and 95% Confidence Intervals (CI) were calculated to evaluate the strength of associations.

Results: Among the 218 PLWHA, the prevalence of sarcopenia was 8.7% (95% CI: 5.6 to 13.3). The mean age of the study population was 51.8 ± 8.3 years; 53.7% were male, 72.9% were brown/Black, 97.7% reported not using illicit drugs, and 24.8% were classified as obese. Multivariate analysis showed that the time since HIV diagnosis (P = 0.022) and the use of illicit drugs were associated with the diagnosis of sarcopenia.

Conclusion: The prevalence of sarcopenia using the EWGSOP2 criteria was low. People with a longer duration of HIV infection and those using illicit drugs were more likely to develop sarcopenia.