• Michelle L Vidoni, MinJae Lee, Lisa Mitchell-Bennett, and Belinda M Reininger.
• Biostatistics, Epidemiology, and Research Design (BERD) Core, Center for Clinical and Translational Sciences (CCTS), University of Texas Health Science Center at Houston, Houston, Texas.
• Am J Prev Med. 2019 Nov 1; 57 (5): 611-620.

IntroductionHispanic populations are less likely that other ethnicities to meet physical activity guidelines. Community health worker (CHW) outreach is an effective delivery method for behavior change messages owing to shared culture, language, and life experience. This study examined the efficacy of a CHW-delivered intervention, Tu Salud ¡Si Cuenta! (Your Health Matters!) at Home Intervention, to promote physical activity among Mexican Americans.Study DesignRCT.Setting And ParticipantsMexican Americans living along the Texas-Mexico border from June 2010 to April 2013.InterventionEligible adults were randomized into intervention (n=250) or standard care (n=250). Intervention participants received 6 monthly CHW visits that included education, motivation, and support for lifestyle changes. Standard care was potentially exposed to a community-wide health promotion campaign. Data were collected at baseline and 6- and 12-month follow-ups.Main Outcome MeasuresMeeting physical activity guidelines was defined as ≥600 MET-adjusted minutes of moderate and vigorous exercise.ResultsIntervention participants were more likely to meet physical activity guidelines at 6 months (AOR=2.02, 95% CI=1.25, 3.26) than standard care, but the significance was not maintained at 12 months (AOR=1.53, 95% CI=0.92, 2.53). The results were similar in the as-treated and obesity-stratified analyses. The secondary analysis corroborated the primary results.ConclusionsThis study shows increases in physical activity among those exposed to a CHW intervention, including participants with obesity. It also indicates that the removal of CHW contact tapers the effect at 12 months.Trial RegistrationNCT01168765.Copyright © 2019 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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