Evaluating the Feasibility, Acceptability, and Engagement of an mHealth Physical Activity Intervention for Adults...

The purpose of this study was to test a partnered, self-determination theory-informed mobile health intervention called SCI Step Together, using an 8-week randomized controlled trial design. The aim of SCI Step Together is to increase the quantity and quality of physical activity (PA) among adults with spinal cord injury (SCI) who walk. The SCI Step Together program provides PA modules and PA self-monitoring tools and facilitates peer and health coach support. Process, resource, management, and scientific feasibility were assessed, and participants completed questionnaires at baseline, mid-, and postintervention to assess determinants and outcomes of PA. Interviews were conducted to evaluate acceptability. Results suggest that the program demonstrated good feasibility, acceptability, and engagement. The intervention group (n = 11) had greater fulfillment of basic psychological needs and knowledge (p = .05) than the control group (n = 9). There were no significant interaction effects for other outcomes. The SCI Step Together program is feasible and acceptable and efficacious for improving some psychosocial variables. Results may inform SCI mobile health programs.