%0 Journal Article
%@ 1929-0748
%I JMIR Publications
%V 14
%N 
%P e69771
%T An mHealth Intervention With Financial Incentives to Promote Smoking Cessation and Physical Activity Among Black Adults: Protocol for a Feasibility Randomized Controlled Trial
%A Alexander,Adam
%A Businelle,Michael
%A Cheney,Marshall
%A Cohn,Amy
%A McNeill,Lorna
%A Short,Kevin
%A Frank-Pearce,Summer
%A Bradley,David
%A Estrada,Kimberly
%A Flores,Iván
%A Fronheiser,Jack
%A Kendzor,Darla
%+ University of Oklahoma Health Sciences Center, 655 Research Parkway, Suite 400, Oklahoma City, OK, 73104, United States, 1 (405) 965 05, Adam-Alexander@ouhsc.edu
%K African American
%K Black
%K mobile health
%K mHealth
%K smartphone app
%K smoking cessation
%K physical activity, mobile phone
%D 2025
%7 31.1.2025
%9 Protocol
%J JMIR Res Protoc
%G English
%X Background: Black adults in the United States experience disproportionately high rates of tobacco- and obesity-related diseases, driven in part by disparities in smoking cessation and physical activity. Smartphone-based interventions with financial incentives offer a scalable solution to address these health disparities. Objective: This study aims to assess the feasibility and preliminary efficacy of a mobile health intervention that provides financial incentives for smoking cessation and physical activity among Black adults. Methods: A total of 60 Black adults who smoke (≥5 cigarettes/d) and are insufficiently physically active (engaging in <150 min of weekly moderate-intensity physical activity) will be randomly assigned to either HealthyCells intervention (incentives for smoking abstinence only) or HealthyCells+ intervention (incentives for both smoking abstinence and daily step counts). Participants will use study-provided smartphones, smartwatches, and carbon monoxide monitors for 9 weeks (1 wk prequit date through 8 wk postquit date). Feasibility will be evaluated based on recruitment rates, retention, and engagement. The primary outcomes include carbon monoxide–verified, 7-day smoking abstinence at 8 weeks postquit date and changes in average daily step count. Feasibility benchmarks include a recruitment rate of ≥5 participants per month, a retention rate of ≥75%, and a smoking abstinence rate of ≥20% at 8 weeks postquit date. Expected increases in physical activity include a net gain of 500 to 1500 steps per day compared to baseline. Results: Recruitment is expected to begin in February 2025 and conclude by September 2025, with data analysis completed by October 2025. Conclusions: This study will evaluate the feasibility of a culturally tailored mobile health intervention combining financial incentives for smoking cessation and physical activity promotion. Findings will inform the design of larger-scale trials to address health disparities through scalable, technology-based approaches. Trial Registration: ClinicalTrials.gov NCT05188287; https://clinicaltrials.gov/ct2/show/NCT05188287 International Registered Report Identifier (IRRID): PRR1-10.2196/69771 
%M 39888657
%R 10.2196/69771
%U https://www.researchprotocols.org/2025/1/e69771
%U https://doi.org/10.2196/69771
%U http://www.ncbi.nlm.nih.gov/pubmed/39888657