Participant Recruitment and Eligibility
RECRUITMENT
Spanish-speaking staff used a variety of active and passive recruitment methods in the New England area (Rhode Island, Connecticut, and Massachusetts) and nationally. In the New England area, staff actively recruited at businesses, local libraries, churches, and colleges. In addition, staff conducted outreach to men’s groups, worksites, and community organizations. They also posted flyers and completed interviews and paid radio advertisements on Spanish-language radio. Although these efforts resulted in high reach among Latino men locally, study enrollment lagged. As such, we expanded study recruitment beyond New England by posting paid advertisements on social media sites (eg, Facebook), with specific focus on recruiting Latino men from the East Coast of the United States.Staff determined the initial study eligibility via a phone screening with men interested in learning more about the study. To be eligible, potential participants had to self-report being a Latino man aged between 18 and 65 years. As the intervention was primarily internet-based and SMS text message–based, potential participants also had to own a mobile phone with SMS texting capabilities and have regular internet access via a smartphone, tablet, or computer. Potential participants had to agree to be randomized to either the intervention or attention-matched control arm. As part of the preliminary eligibility screening, participants answered questions about medical conditions to identify conditions that might increase the health risks of engaging in unsupervised MVPA. Additional exclusion criteria included BMI≥45 kg/m