Digital Weight Loss Intervention for Obesity
(Nudge Trial)
What You Need to Know Before You Apply
What is the purpose of this trial?
The purpose of this micro-randomized trial is to evaluate the effects of 7 types of intervention messages targeting specific behavior change techniques (i.e., BCT messages) delivered in "just-in-time" (JIT) moments on daily achievement of weight-related behavioral goals among n=201 young adults with overweight and obesity, participating in a digital, mobile comprehensive lifestyle intervention. "Just-in-time adaptive interventions" (JITAIs) are an alternative to the "one size fits all" approach of mobile intervention development that can provide tailored, real-time messaging and support for young adults.
Who Is on the Research Team?
Carmina G. Valle, PhD, MPH
Principal Investigator
Assistant Professor
Are You a Good Fit for This Trial?
This trial is for young adults with a BMI of 25-45 who speak English and have a smartphone. They should be physically inactive, not doing more than 210 minutes of exercise per week. People can't join if they're in another similar study, have certain mental health issues, are using appetite-affecting drugs (except stable SSRIs), or have serious health conditions that affect weight or physical activity.Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Treatment
Participants receive a 6-month behavioral weight loss intervention using the Nudge mobile app, including daily BCT messages, self-monitoring, and tailored feedback
Follow-up
Participants are monitored for adherence to weight loss behaviors and effectiveness of intervention messages
What Are the Treatments Tested in This Trial?
Interventions
- Behavior Change Technique 1 Message (Action Planning)
- Behavior Change Technique 2 Message (Discrepancy between Current Behavior and Goal)
- Behavior Change Technique 3 Message (Feedback on Outcome of Behavior)
- Behavior Change Technique 4 Message (Social Support)
- Behavior Change Technique 5 Message (Social Comparison)
- Behavior Change Technique 6 Message (Social Reward)
- Behavior Change Technique 7 Message (Focus on Past Success)
- Core Behavioral Weight Loss (BWL) Intervention
Find a Clinic Near You
Who Is Running the Clinical Trial?
University of North Carolina, Chapel Hill
Lead Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
Collaborator