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Physical activity is associated with adiposity in older adults with HIV in the modern HIV era.

AIDS 2023 June 29
OBJECTIVES: People with HIV (PWH) are aging and are experiencing higher rates of abdominal adiposity. Physical activity is an effective non-pharmacological strategy to reduce adiposity in the general aging population. Yet, the relationship between physical activity and adiposity in people with well-controlled HIV is unclear. Our objective was to describe the association between objectively-measured physical activity and abdominal adiposity in PWH.

METHODS: As part of the multisite, observational PROSPER-HIV study, virologically suppressed, adult PWH wore an Actigraph accelerometer for 7-10 days and completed duplicate waist and hip circumference measures. Demographic and medical characteristics were abstracted from the CFAR Network of Integrated Clinical Systems dataset. Descriptive statistics and multiple linear regressions were used to analyze the data.

RESULTS: On average, our 419 PWH were 58 years of age (IQR: 50, 64), male (77%), Black (54%), and currently taking an integrase inhibitor (78%). PWH completed a mean of 7.06 (±2.74) days of total actigraphy wear time. They took an average of 4,905 (3233, 7140) steps per day and engaged in 5.4 hours of sedentary time per day. Controlling for age, sex, employment and integrase inhibitor use, the number of steps taken per day was associated with reduced abdominal adiposity (F = 3.27; p < 0.001) and the hours of daily sedentary time was associated with increased abdominal adiposity (F = 3.24; p < 0.001).

CONCLUSIONS: Greater physical activity is associated with reduced abdominal adiposity in aging PWH. Future work should investigate how to tailor the amount, type and intensity of physical activity needed to reduce adiposity in PWH taking contemporary HIV medication.

REGISTRATION NUMBER: NCT03790501.

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