Exploring the Interrelationships Between Physical Function, Functional Exercise Capacity, and Exercise Self-Efficacy in Persons Living with HIV.

PURPOSE: To determine if there were differences between the subjective and objective assessments of physical activity while controlling for sociodemographic, anthropometric, and clinical characteristics. SETTING/SAMPLE: A total of 810 participants across eight sites located in three countries. MEASURES: Subjective instruments were the two subscales of Self-efficacy for Exercise Behaviors Scale: Making Time for Exercise and Resisting Relapse and Patient-Reported Outcomes Measurement Information System, which measured physical function. The objective measure of functional exercise capacity was the 6-minute Walk Test. ANALYSIS: Both univariate and multivariant analyses were used. RESULTS: Physical function was significantly associated with Making Time for Exercise (ß = 1.76, p = .039) but not with Resisting Relapse (ß = 1.16, p = .168). Age (ß = -1.88, p = .001), being employed (ß = 16.19, p < .001) and race (ßs = 13.84-31.98, p < .001), hip-waist ratio (ß = -2.18, p < .001), and comorbidities (ß = 7.31, p < .001) were significant predictors of physical functioning. The model predicting physical function accounted for a large amount of variance (adjusted R2 = .938). The patterns of results predicting functional exercise capacity were similar. Making Time for Exercise self-efficacy scores significantly predicted functional exercise capacity (ß = 0.14, p = .029), and Resisting Relapse scores again did not (ß = -0.10, p = .120). Among the covariates, age (ß = -0.16, p < .001), gender (ß = -0.43, p < .001), education (ß = 0.08, p = .026), and hip-waist ratio (ß = 0.09, p = .034) were significant. This model did not account for much of the overall variance in the data (adjusted R2 = .081). We found a modest significant relationship between physical function and functional exercise capacity (r = 0.27). CONCLUSIONS: Making Time for Exercise Self-efficacy was more significant than Resisting Relapse for both physical function and functional exercise capacity. Interventions to promote achievement of physical activity need to use multiple measurement strategies.

Working status and seasonal meteorological conditions predict physical activity levels in people living with HIV.

Little is known about how demographic, employment and meteorological factors impact physical activity. We conducted an analysis to explore these associations from participants (N = 447) from six cities in the United States and matched their activity data with abstracted local meteorological data from National Oceanic and Atmospheric Administration (NOAA) weather reports. Participants were purposively recruited in 3-month blocks, from December 2015 to October 2017, to reflect physical activity engagement across the seasons. We calculated total physical activity (minutes/week) based on 7-day physical activity recall. Mild correlations were observed between meteorological factors and correlated with lower physical activity. Participants were least active in autumn (Median = 220 min/week) and most active in spring (Median = 375 min/week). In addition to level of education and total hours of work, maximum temperature, relative humidity, heating degree day, precipitation and sunset time together explained 17.6% of variance in total physical activity. Programs assisting in employment for PLHIV and those that promote indoor physical activity during more strenuous seasons are needed. Additional research to better understand the selection, preferences, and impact of indoor environments on physical activity is warranted.

Factors related to functional exercise capacity amongst people with HIV in Durban, South Africa.

BACKGROUND: People with HIV (PWH), who engage in regular physical activity, have improved fitness, muscular strength, body composition, health-related quality of life and mental health symptoms, but PWH have amongst the lowest physical activity levels of those with any chronic health condition. Furthermore, there is scant evidence examining these relationships in PWH in Africa. AIM: To address these critical gaps, this cross-sectional descriptive research study examined the relationships between demographic, HIV-related, anthropometric factors, neighbourhood walkability and physical activity, amongst PWH in Durban, South Africa. SETTING: Respondents (N = 100) were receiving primary healthcare in six eThekwini nurse-run municipal clinics. METHODS: Self-reported socio-demographic data were collected, and HIV-related medical data were extracted from respondent's medical charts. Height and weight were measured to calculate the body mass index (BMI, kg/m2); neighbourhood walkability was measured on the Neighbourhood Environment scale; and physical activity, specifically functional exercise capacity, was measured by the 6-min walk test (6MWT). RESULTS: On average, respondents were black African, female, approximately 38 years old and unemployed; men were of normal weight whilst women were overweight. Only 65% of the respondents reached the age- and sex-predicted distance during the 6MWT. Correlational analyses did not reveal any significant relationships between the functional exercise capacity and socio-demographic, HIV-related factors or anthropometric measures. CONCLUSION: South African PWH do not reach their predicated walking distance on the 6MWT. Engaging community agencies to promote walking as both a means of transportation and leisure physical activity may decrease the risks of a sedentary lifestyle and improve progression towards recommended physical activity targets.

Social media use as a predictor of higher body mass index in persons living with HIV.

Social media tools have been touted as an approach to bring more democratic communication to health care. We conducted a multi-site cross-sectional study among persons living with HIV (PLWH) to desrcibe technology use among PLWH in the US and the association between social media use and body-mass index (BMI). Our primary predictor variable was social media use. Our primary outcome was BMI measured through height and weight. Descriptive statistics were used to describe the demographic profiles of the study participants and linear regression models were used to analyze associations between the outcome and predictor variables controlling for demographic characteristics. Study participants (N = 606) across 6 study sites in the United States were predominately 50-74 years old (67%). Thirty-three percent of study participants had a normal weight (BMI 18.5-25), 33% were overweight (BMI 25-30), and 32% were obese (BMI > 30). Participants used several social media sites with Facebook (45.6%) predominating. Social media use was associated with higher BMI in study participants (p < .001) and this effect persisted, although not as strongly, when limiting the analysis to those who only those who used Facebook (p = .03). Further consideration of social factors that can be ameliorated to improve health outcomes is timely and needed.

If I was more informed about what exactly they do: perceptions of Botswana district hospital healthcare providers about World Spine Care.

Background: In 2011, World Spine Care (WSC) opened their pilot clinic at the Botswana Mahalapye District Hospital (MDH) aiming to develop a low-cost model of evidence-based spine care for underserved communities. Providing sustainable, integrated, evidence-based care will require buy-in from local healthcare providers (HCPs) and the communities served. The purpose of this project was to understand how MDH HCPs perceive WSC. Methods: We used a qualitative descriptive methodology to conduct individual, semi-structured interviews with MDH HCPs who had some familiarity about WSC services. Interviews were conducted in English, audio-recorded, and transcribed verbatim. We used an iterative coding process for thematic content analysis and interpretations were regularly reviewed by all co-authors. Results: In March 2017, interviews with 20 HCPs, from diverse disciplines with a range in years' experience at MDH, revealed three overlapping themes: knowledge about WSC and spinal related disorders, perceived role of WSC, and challenges for WSC integration. Participants who attended WSC conferences or self-referred for care were more informed and, generally, held positive perceptions. Participants lacked knowledge about managing spinal-related disorders, asserted hospital protocols did not meet patient needs, and perceived WSC is 'filling a gap' to manage these conditions. There were mixed perceptions about care received as WSC patients; some ultimately obtained relief, while others reported the treatment painful and unfamiliar, discharging themselves from care. Challenges to integrate WSC into the healthcare system were: lack of knowledge about scope of practice and unclear referral pathways; reversing the isolated care WSC provides by increasing collaboration between WSC and hospital staff; and, high turnover of WSC clinicians that undermines program sustainability. Conclusions: MDH healthcare providers had adequate general knowledge about World Spine Care and spinal-related disorders, but did not understand the WSC scope of practice nor referral pathways to and from providers. Participants advocated for greater collaboration between WSC and hospital staff to increase acceptance and integration to deliver spine care services and foster wider adoption of the WSC model, particularly if WSC expands services across Botswana. Future efforts that incorporate interviews with patients and government officials also can provide valuable perspectives to achieve sustainable, integrated, evidence-based spine care.

The Relationship Between Physical Activity and Cardiorespiratory Fitness Among People Living With Human Immunodeficiency Virus Throughout the Life Span.

BACKGROUND: People living with human immunodeficiency virus (PLHIV) are at an increased risk for developing cardiovascular disease (CVD). Physical activity and cardiorespiratory fitness in PLHIV are poorly understood. OBJECTIVE: The aims of this study were to describe physical activity and cardiorespiratory fitness by sex and age and to examine the association between physical activity and cardiorespiratory fitness in PLHIV, controlling for covariates. METHODS: Seven hundred two PLHIV participated in a cross-sectional study and completed validated measures of self-reported physical activity (7-day Physical Activity Recall) and cardiorespiratory fitness (6-minute walk test). Participants were recruited from 7 diverse sites in the United States and Thailand, and data were analyzed using descriptive statistics and multiple regression to examine the relationship between physical activity and cardiorespiratory fitness. RESULTS: On average, participants self-reported engaging in 115 minutes of, mostly light (75%), physical activity. Men reported twice the amount of physical activity as women (155 vs 73 minutes, P = .01). Participants' ability to achieve their predicted 6-minute walk test distances was similar between men (68%) and women (69%) (P > .01). For women, vigorous physical activity was associated with a 6.6% increase in cardiorespiratory fitness and being temporarily unemployed was associated with an 18% decline in cardiorespiratory fitness. Cardiorespiratory fitness increased with age (P < .01). CONCLUSIONS: Weekly physical activity of people living with human immunodeficiency virus averaged 85 minutes of mostly light activity, well below the recommended 150 minutes of moderate activity. Vigorous physical activity was associated with improved cardiorespiratory fitness in women, but not men. Although PLHIV would benefit from interventions to increase physical activity, our data suggest a need to develop sex-specific physical activity strategies.