Latinos experience a disproportionate burden of hypokinetic-related chronic diseases, threatening the future health of the nation's fastest-growing population. Physical inactivity has been linked to increased risk of obesity, type 2 diabetes, and various cancers. Latinos are more likely than non-Hispanic whites to fail to meet physical activity (PA) recommendations, and Latino women are less physically active than Latino men. The goal of the proposed ENLACE research project is to design, implement and evaluate a promotora-led PA intervention that takes a comprehensive, multi- level, community-based approach to promoting moderate-to-vigorous physical activity (MVPA) among a particularly underserved segment of Latinas. The intervention approach, based on the social ecological model, focuses on individual attitudes and skills, socio-cultural factors and environmental influences to behavior change. The proposed group- randomized controlled trial builds on formative and pilot research (funded by a National Heart, Lung and Blood Institute R21, HL087765) by a team of academic investigators and community partners with extensive experience working together to conduct behavioral interventions and outreach with Latino and disadvantaged populations. Eight community resource centers (CRCs) in four predominantly Latino counties in South Texas'Lower Rio Grande Valley will be randomly assigned to either the Enlace PA Intervention (4 CRCs) or an attention-control condition (4 CRCs). We will recruit 704 Latinas ages 18-64 who do not meet national PA guidelines from colonias (unincorporated, impoverished, underserved Latino settlements) in the CRC service areas. Participants from CRCs randomized to the Enlace PA Intervention (N = 352;88 women per CRC) will receive 16 weekly promotora-led group sessions followed by 24 weeks of a maintenance intervention (monthly promotora-delivered newsletters and telephone counseling). The group sessions'behavioral goal is for Latinas to engage in 30 minutes per day of MVPA on 5 or more days per week. The attention- control group (N = 352;88 women per CRC) will receive 16 weekly promotora-led group sessions on home safety/first aid and monthly generic health education materials and informational telephone calls during the maintenance intervention period. The primary outcome is minutes per week of MVPA (measured with accelerometers). Secondary outcomes are physical fitness and weight maintenance. We also will evaluate self-efficacy, social support, decisional balance, and collective efficacy as mediators of MVPA changes. Standardized measurement of primary and secondary outcomes will occur at baseline, immediate (16 weeks) and delayed post-intervention (40 weeks). We hypothesize that Latinas in the ENLACE PA Intervention will significantly increase their MVPA levels as a result of addressing their specific individual, socio-cultural and environmental barriers and enhancing their social support and collective efficacy, compared to attention-control Latinas.
Increasing Latinas'ability to gain the benefits of regular moderate-to-vigorous physical activity (MVPA) is a key strategy for addressing Latino health disparities. Enlace was developed in partnership with community members, to enhance Latina's behavioral skills, promote social support and collective efficacy, and enhance access to culturally appropriate, economical PA resources in their communities. Research results will provide scientific knowledge about effective community-based intervention methods with potential for replication in underserved areas across the nation and will contribute further evidence regarding the critical role of community-wide participation in research to bolster efforts to eliminate health disparities.
|Salinas, Jennifer J; McDaniel, Marisol; Parra-Medina, Deborah (2018) The Role of Social Support and the Neighborhood Environment on Physical Activity in Low-income, Mexican-American Women in South Texas. J Prev Med Public Health 51:234-241|
|Hilfinger Messias, DeAnne K; Sharpe, Patricia A; Del Castillo-González, Lourdes et al. (2017) Living in Limbo: Latinas' Assessment of Lower Rio Grande Valley Colonias Communities. Public Health Nurs 34:267-275|
|Salinas, Jennifer J; Shropshire, William; Nino, Ana et al. (2016) Food Insecurity, Not Stress is Associated with Three Measures of Obesity in Low-Income, Mexican-American Women in South Texas. Food Public Health 6:149-156|
|Maloney, Ann E; Mellecker, Robin; Buday, Richard et al. (2015) Fun, Flow, and Fitness: Opinions for Making More Effective Active Videogames. Games Health J 4:53-7|
|Salinas, Jennifer J; Hilfinger Messias, DeAnne K; Morales-Campos, Daisy et al. (2014) English language proficiency and physical activity among Mexican-origin women in South Texas and South Carolina. J Health Care Poor Underserved 25:357-75|
|Messias, DeAnne K Hilfinger; Parra-Medina, Deborah; Sharpe, Patricia A et al. (2013) Promotoras de Salud: roles, responsibilities, and contributions in a multisite community-based randomized controlled trial. Hisp Health Care Int 11:62-71|
|Parra-Medina, Deborah; Hilfinger Messias, Deanne K (2011) Promotion of Physical Activity Among Mexican-Origin Women in Texas and South Carolina: An Examination of Social, Cultural, Economic, and Environmental Factors. Quest 63:100-117|