Adaptive Goals and Interventions for Lifestyle Enhancement

Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.

Standard monitoring using smartphone tracking of all calorie intake.

Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.

Physical activity goals that adapt once each day using the participants' data derived from activity tracker.

Physical activity goals that adapt once each week using the participants' data derived from activity tracker.

Message timing is fixed and evaluated at specific times each day to determine message eligibility.

Message timing is adaptive and derived from individual user data to determine message eligibility.

Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.

Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.

Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision

Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.