Publications

BACKGROUND: The COVID-19 pandemic has resulted in the closure of schools and may have inadvertently resulted in decreased physical activity for youth. Emerging evidence suggests that school closures due to the COVID-19 pandemic could have hastened the inactivity of youth, possibly due to a lack of structure outside of school and increased access to sedentary activities.

OBJECTIVE: The purpose of this study was to assess changes in physical activity from pre-school closure (before the pandemic) to post-school closure (during the pandemic) among youth in spring 2020.

METHODS: This study used a natural experimental design; youth were enrolled in a physical activity study prior to the lockdown, which was enforced due to the pandemic. The number of device-assessed steps per day and moderate-to-vigorous physical activity minutes per week were measured by using a Garmin Vivofit 4 (Garmin Ltd) accelerometer over 8 weeks. Mixed effects models were used to compare physical activity variables, which were measured before and during the COVID-19 pandemic.

RESULTS: Youth were primarily Hispanic or Latinx (8/17, 47%) and female (10/17, 59%). The number of daily steps decreased by 45.4% during the school closure, from a pre-school closure mean of 8003 steps per day to a post-school closure mean of 4366 steps per day. Daily moderate-to-vigorous physical activity decreased by 42.5%, from a pre-school closure mean of 80.18 minutes per week to a post-school closure mean of 46.13 minutes per week.

CONCLUSIONS: Youth are engaging in roughly half as much physical activity during the school closure as they were prior to the school closure. If additional evidence supports these claims, interventions are needed to support youths' engagement in physical activity in the Midwest.

Persons living with HIV (PLWH) with socio-economic vulnerabilities are especially vulnerable to HIV stigma and adverse HIV outcomes. Stigma related to HIV may intersect with marginalized socio-economic conditions to negatively affect social networks. HIV stigma may limit the ability of individuals to sustain social relationships. This study examined the potential cross-sectional and longitudinal associations between HIV stigma and the quality and quantity of social networks for PLWH. PLWH (n = 1,082) who were experiencing housing, employment, and medical care-related difficulties were recruited to participate in a one-year navigation and system coordination intervention to improve housing stability and employment. Neither stigma reduction nor social networks were the main components of the intervention. A series of latent growth curves were estimated to assess the cross-sectional and longitudinal relationships among internalized and anticipated HIV stigma and social networks. Anticipated HIV stigma predicted social networks both cross-sectionally and longitudinally. Internalized HIV stigma predicted social networks cross-sectionally but not longitudinally in this population. These data support the HIV Stigma Framework and suggest that anticipated stigma seems to have a strong association with social networks. As anticipated stigma decreases over time, social network scores increase. Interventions to decrease anticipated HIV stigma as a mechanism of improving social networks warrants further investigation.

OBJECTIVES: Community health improvement plans (CHIPs) are foundational public health practice, yet no studies have been conducted to understand implementation of these plans. This evaluation study of the Kansas City CHIP aims to 1) identify implementation strategies used in the CHIP, 2) assess changes in implementation, service, and client outcomes, 3) assess contextual factors associated with implementation, and 4) understand social networks of coalitions who implement the Kansas City CHIP.

STUDY DESIGN: This study protocol uses a unique, mixed methods approach to evaluating process and outcomes of the Kansas City CHIP. This study is supported by Proctor's Model of Implementation, RE-AIM (reach, effectiveness, adoption, implementation, maintenance), and the practical, robust implementation and sustainability model (PRISM).

METHODS: Staff and community members involved in implementing the Kansas City, Missouri CHIP will be invited to participate in an annual online survey, a series of focus groups, and quarterly implementation logs to assess implementation and sustainability.

RESULTS: RE-AIM and PRISM constructs are the primary and secondary outcomes of interest. Results of this study will be available from the first year of implementation in 2023, with future results provided annually.

CONCLUSIONS: This project will fill a much-needed gap in the literature by understanding how large-scale coalitions implement projects that aim to improve population health and health equity. CHIPs have the potential to improve population health, yet few studies have been conducted on CHIPs, with no studies to date assessing outcomes. To support effective implementation and sustainability as well as improve public health outcomes, researchers need to evaluate CHIPs and develop models of implementation that can quickly be integrated into practice to improve populations' health.

Falls are a critical public health issue among older adults. One notable factor contributing to falls in older adults is a deterioration of the structures supporting balance and overall balance control. Preliminary evidence suggests older adults who ride a bicycle have better balance than those who do not. Cycling may be an effective intervention to prevent falls among older adults. This study aims to objectively measure the relationship between bicycling, physical activity, and balance for older adults. Older adult cyclists (n = 19) and non-cyclists (n = 27) were recruited to (1) complete a survey that assessed demographics; (2) wear an accelerometer for 3 weeks to objectively assess physical activity; and (3) complete balance-related tasks on force platforms. Mann-Whitney U-tests were performed to detect differences in balance and physical activity metrics between cyclists and non-cyclists. Cyclists were significantly more physically active than non-cyclists. Cyclists, compared to non-cyclists, exhibited differences in balance-related temporospatial metrics and long-range temporal correlations that suggest a more tightly regulated postural control strategy that may relate to higher stability. Cycling was observed to correlate more strongly with balance outcomes than other physical activity. Taken together, these results demonstrate the possible implications for cycling as an effective intervention to improve balance and reduce fall risk.

INTRODUCTION: Employment is particularly beneficial for persons living with HIV (PLWH). However, PLWH experiencing internalized stigma or anticipating that they may experience stigma may be less likely to seek employment due to additional barriers associated with HIV. The purpose of this study was to understand the associations between internalized and anticipated stigma and employment barriers for PLWH.

METHODS: Participants (N = 712) from 12 sites across the United States were recruited and interviewed about barriers to employment, HIV stigma, and several other factors related to health. A series of unadjusted and adjusted linear regression models were conducted using cross-sectional data.

RESULTS: Adjusted models suggest that greater anticipated stigma was related to increased employment barriers (β = 0.12, p = 0.04). Mental and physical health functioning also positively predicted employment barriers (β = -0.18, p <0.001; β = -0.40, p <0.001, respectively).

DISCUSSION: Employment among PLWH has beneficial impacts on HIV-related health outcomes. This study suggests that anticipated stigma may limit and individual's willingness to seek out employment, or may cause them to leave employment. Internalized stigma may not play as large of a role in employment as anticipated stigma for PLWH. HIV-related stigma reduction interventions focused on community-level and employers are essential to improve employment opportunities for PLWH.

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BACKGROUND: Broad networks of providers in the Ryan White system are essential to end the HIV epidemic. Yet, there is little evidence that has assessed social networks of providers within HIV care networks. The purpose of this study is to provide a cross-sectional analysis of the role medical case managers (MCM), housing providers (HP), and health department staff (HDS), play in a Ryan White-funded area.

METHODS: All MCMs, HPs, and HDS (N = 57) in a Midwest Transitional Grant Area were invited to participate in a social network survey. Social network composition scores, exponential random graph modeling and ANOVA tests were conducted using SPSS and R Studio.

RESULTS: Communication in this network was significantly more likely between SW of the same provider type (e.g. MCMs communicating with other MCMs, β = .87, p<.001). HDS reported larger overall social networks (F(2,54) = 4.59, p = <.01), larger networks with other provider types (F(2,54) = 9.23, p<.001), and higher quality of relationships with other provider types (F(2,54) = 3.90, p<.05) than MCM or HP. HDS were more likely to communicate across the system than MCMs or HPs (β = .75, p<.001).

DISCUSSION: HDS play an important role in communicating across provider types in care delivery for HIV. Our results indicate that health departments represent essential agencies for broad dissemination of resources and knowledge, and may bridge communication barriers for coordination of housing support and HIV care delivery.

Research has suggested that men in relationships are more physically active than men who are single. This study provides a weighted analysis of physical activity by coupling status for men of different sexual orientations. Aggregated data from the United States 2013-2014 National Health Interview Survey were used to conduct multivariate logistic regression analyses. Compared to straight men (n = 29,926), gay men (n = 623) were less likely to be in a relationship (AOR 0.32, CI: 0.25-0.41). Coupled gay men did more physical activity than coupled straight men and were 1.62 (CI: 1.05-2.50) times more likely to be active, 1.67 (CI: 1.10-2.51) times more likely to be high active, 1.89 (CI: 1.24-2.89) times more likely to engage in muscle-strengthening activities, and 2.00 (CI: 1.28-3.11) times more likely to meet aerobic and muscle-strengthening recommendations. Coupling facilitates physical activity for men. However, more research is needed to help explore underlying mechanisms for differences by sexuality.