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• W2954889734 abstract "PURPOSE: People diagnosed with HIV can exhibit impaired postural control as a consequence of infection or from secondary effects of medication. Characterize the role of the vestibular and proprioceptive systems during dual postural control tasks in Individuals with HIV. We hypothesize that postural stability will decrease with the increase of task complexity. METHODS: The study was conducted in San Juan, Puerto Rico at a community-based program, La Perla de Gran Precio. 24 subjects (13 male and 11 female, age average 59.2± 1.7 years) participated in the study. Participants had to be diagnosed with HIV with a CD4 count of >200 cells/uL to enroll in the study. After signing the informed consent and collecting demographic data, a member of the research team placed a lumbar accelerometer on each subject. Each participant was instructed to quiet stand in a static bi-pedal posture on a firm surface or a thick foam pad. Each task took 15 seconds to be performed. The first task was to stand on a firm surface (baseline), the eight remaining balance tasks were performed with a thick balance foam mat (four single and four dual cognitive tasks). For the cognitive dual tasks participants were instructed to count backward 3 numbers at a time. RESULTS: Postural control was measured with Body-worn accelerometers (ACC). The two variables of interest in this study were jerk sway acceleration in an anterior-posterior (A-P) and mediolateral direction (M-L), m^2/s^5. A MANOVA analysis was used to compare the variables of interest, between baseline (BL) (firm surface eyes open) and single/double tasks. AP sway increased significantly during single (BL 0.020 ± .01 m^2/s^5 versus single task 0.20 ± 0.02 m^2/s^5 P< 0.005) and dual tasks (BL 0.020 ± .01 m^2/s^5 versus dual task 0.23 ± 0.03 m^2/s^5 P< 0.005) when visual input was canceled. CONCLUSIONS: Single and dual tasks showed a similar challenge and results regarding increased acceleration and instability. It appears that the vestibular and proprioceptive systems could be impaired in HIV diagnosed people. Because there is no fall history among the participants of this study and these findings, it seems that patients with HIV rely on the visual system to a higher degree to attain postural control." @default.
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• W2954889734 date "2019-06-01" @default.
• W2954889734 modified "2023-09-25" @default.
• W2954889734 title "Vestibular And Proprioceptive Alteration Influence Postural Instability During Dual Tasks In Adults Diagnosed With HIV" @default.
• W2954889734 doi "https://doi.org/10.1249/01.mss.0000561575.05685.c2" @default.
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