BACKGROUND: Young adults (YAs) are underrepresented in behavioral health and weight loss interventions and express interest in flexible, highly tailored programs. Mobile interventions are a lower-burden, scalable approach to providing behavioral support. Just-in-time-adaptive interventions (JITAI) promise to deliver the "right" support at the "right" time using real-time data from smartphones and sensors. JITAIs hold promise for promoting behavior changes needed for weight loss (dietary intake, activity, and self-weighing)
however, there is limited evidence for selecting treatment components and levels of adaptation that are needed for success. METHODS: The AGILE (Adaptive Goals and Interventions for Lifestyle Enhancement) trial utilizes the Multiphase Optimization Strategy (MOST) framework and a 2 CONCLUSIONS: Results of this trial will be used to create an optimized JITAI for weight loss in young adults.