• Rodney P Joseph, Barbara E Ainsworth, Sonia Vega-López, Marc A Adams, Kevin Hollingshead, Steven P Hooker, Michael Todd, Glenn A Gaesser, and Colleen Keller.
• Center for Health Promotion and Disease Prevention, College of Nursing and Health Innovation, Arizona State University, 500 N 3rd St, Phoenix, AZ 85004, USA. Electronic address: rodney.joseph@asu.edu.
• Contemp Clin Trials. 2019 Feb 1; 77: 46-60.

BackgroundAfrican American (AA) women perform low levels of physical activity (PA) and are disproportionally burdened by cardiometabolic disease conditions when compared to White women and the U.S. population as a whole. These disparities emphasize the need for innovative and effective interventions to increase PA and reduce cardiometabolic disease risk among AA women. Recent evidence suggests that mobile health (mHealth) interventions have the potential to increase PA and reduce cardiometabolic disease risk factors. Few studies have examined the efficacy of mHealth PA interventions among racial/ethnic minorities, including AA women. This represents a missed opportunity given the reported success of technology-delivered PA interventions in predominately White populations and the high use of technology among AA women.ObjectiveTo describe the design, theoretical rationale, and cultural relevance of Smart Walk, a culturally sensitive smartphone-delivered PA intervention for AA women.Design And MethodsSmart Walk is an 8-month, randomized controlled pilot trial designed to increase PA and reduce cardiometabolic disease risk among AA women. Sixty physically inactive AA women with obesity will be assigned to receive either a culturally relevant intervention designed to increase PA (by targeting leisure-time, household chore/task-related, and occupational PA) or a culturally relevant wellness attention-matched control condition. Outcomes will be assessed at baseline, 4 months, and 8 months, and include feasibility and acceptability of the PA intervention and evaluation of effects on PA and cardiometabolic risk factors.SummarySmart Walk represents a culturally relevant, theory-based approach to promote PA and reduce cardiometabolic disease risk in AA women.Copyright © 2018 Elsevier Inc. All rights reserved.

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