The Influence of Exercise on Cardiovascular Health in Sedentary Adults With Human Immunodeficiency Virus.

BACKGROUND: Lifestyle physical activity (ie, moderate physical activity during routine daily activities most days of the week) may benefit human immunodeficiency virus (HIV)-positive adults who are at high risk for cardiovascular disease. OBJECTIVE: The aims of this study were to describe lifestyle physical activity patterns in HIV-positive adults and to examine the influence of lifestyle physical activity on markers of cardiovascular health. Our secondary objective was to compare these relationships between HIV-positive adults and well-matched HIV-uninfected adults. METHODS: A total of 109 HIV-positive adults and 20 control participants wore an ActiGraph accelerometer, completed a maximal graded cardiopulmonary exercise test, completed a coronary computed tomography, completed anthropomorphic measures, and had lipids and measures of insulin resistance measured from peripheral blood. RESULTS: Participants (N = 129) had a mean age of 52 ± 7.3 years, 64% were male (n = 82), and 88% were African American (n = 112). On average, HIV-positive participants engaged in 33 minutes of moderate-to-vigorous physical activity per day (interquartile range, 17-55 minutes) compared with 48 minutes in controls (interquartile range, 30-62 minutes, P = .05). Human immunodeficiency virus-positive adults had poor fitness (peak oxygen uptake [VO2], 16.8 ± 5.2 mL/min per kg; and a ventilatory efficiency, 33.1 [4.6]). A marker of HIV disease (current CD4+ T cell) was associated with reduced peak VO2 (r = -0.20, P < .05) and increased insulin resistance (r = 0.25, P < .01) but not with physical activity or other markers of cardiovascular health (P ≥ 0.05). After controlling for age, gender, body mass index, and HIV status, physical activity was not significantly associated with peak VO2 or ventilatory efficiency. CONCLUSION: Human immunodeficiency virus-positive adults have poor physical activity patterns and diminished cardiovascular health. Future longitudinal studies should examine whether HIV infection blunts the beneficial effects of physical activity on cardiovascular health.

Social resources, health promotion behavior, and quality of life in adults living with HIV.

PURPOSE: To describe the associations among three social resource variables (social belonging, social support networks, and social capital) and two health promotion behaviors, HIV medication adherence and physical activity, and quality of life among persons living with HIV (PLHIV). METHOD: We conducted a cross-sectional analysis in 102 adult PLHIV. Social resource variables and quality of life were assessed using validated and widely-used instruments. Physical activity was assessed using a daily physical activity diary and medication adherence was abstracted from the participant's medical record. Spearman correlations and descriptive statistics were used to analyze associations among variables. RESULTS: Fifty-four participants (54%) were male and most were African American (84%), single (69%), and living in poverty (82%). Participants had been living with HIV for an average of 13.6 years (+/-7) and most were living with at least one non-AIDS comorbidity (80%). Social belonging was significantly associated with HIV medication adherence (ρ=0.25, p=0.02), overall functioning (ρ=0.48, p<0.01) and life satisfaction quality of life (ρ=0.50, p<0.01). Social capital was also associated with HIV medication adherence (ρ=0.17, p=0.10) and life satisfaction quality of life (ρ=0.29, p<0.01). CONCLUSIONS: We found that there are distinctions among various, widely-used social resource constructs. By describing these unique associations and distinctions, our study helps identify which social resources should be targeted in the development of interventions to improve health promotion and the quality of life of members of this marginalized population.

The Impact of Mental Wellness on HIV Self-Management.

As people living with HIV age, they face increasing self-management work related to HIV infection plus the prevention and mitigation of multiple chronic health conditions, including daily health practices (i.e., physical activity, nutrition), engaging in a supportive community, and accepting the chronicity of HIV. Our purpose was to describe the relationship between HIV self-management practices and mental wellness (depressive symptoms, perceived stress). Ninety-three adult people living with HIV on antiretroviral therapy were enrolled and completed a survey. We used descriptive statistics to summarize variables, and Spearman rank correlation and quantile regression to study associations between variables. Participants' average age was 48.6 years, 56% were male, and 87% were African American. Daily self-management practices were associated with depressive symptoms (r = -0.19; p ≤ .01) and perceived stress (r = -0.14; p = .06); engaging with a supportive community and accepting the chronicity of HIV were not associated with mental wellness (all p > .05).