Testing Just-in-Time Adaptive Interventions (JITAIs) to Prevent Goal Disengagement in Response to Weight Regain

Part of paid clinical trials in Springfield, Oregon.

Sponsor
ORI Community and Evaluation Services
Study ID
NCT07708064
Status
Recruiting
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Conditions

  • Overweight or Obesity

Eligibility Criteria

Sex
ALL
Age
18 Years - 70 Years
Healthy Volunteers
Not accepted

Interventions

  • JITAI Combined with psychological intervention — BEHAVIORAL
    For six months, participants will receive a just-in-time adaptive interventions via a smartphone app immediately after they gain weight or they skip a weigh-in (according to a specific algorithm). Interventions will engage participants in mindfulness, acceptance, and self-compassion-based (MASC) strategies through different modalities (e.g., writing exercises, videos, audio reflections). They will take approximately 1-10 minutes. Participants will also attend an introductory workshop, during which they will receive the instructions weigh daily, learn the importance of quickly responding to weight regain, and be introduced to MASC strategies. They will also attend two booster workshops during the 6-month period.
  • Active Control — BEHAVIORAL
    For six months, participants will receive weekly, automated messages via a smartphone app with reminders of standard behavioral weight control principles. Participants will attend an introductory workshop, during which they will receive instructions to weigh daily and learn the importance of responding to weight regain.

Study Details

This trial will test the effectiveness of a weight loss maintenance intervention designed to help participants respond more adaptively to weight regain. Participants will be randomly assigned to one of two conditions. In one condition, participants will receive brief exercises (e.g., written reflections, videos) sent to through a smartphone app immediately after they regain weight or miss a weigh-in. These exercises will use mindfulness, acceptance, and self-compassion strategies to help participants stay motivated for their long term goals, even when weight regain feels demoralizing. In the comparison condition, participants will receive weekly reminders of standard weight control strategies strategies.

Key Dates

First listed
Jul 16, 2026
Start date
Jul 31, 2026
Status verified
Jul 2026
Primary completion
Dec 31, 2027
Completion
Dec 31, 2027

Study Design

Enrollment
120 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: JITAI Condition
    Participants in this condition will receive a 6-month weight loss maintenance intervention that uses mindfulness, acceptance, and self-compassion strategies to respond to weight regain.
  • Active Comparator: Active Control Condition
    Participants in this condition will receive minimal intervention designed to reflect "usual care" for weight loss maintenance.

Primary Outcome Measure

State negative affect [ Time Frame: Whenever participants skip a weigh-in or regain weight during the 6 month study period ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
Oregon Research Institute Community and Evaluation ServicesSpringfieldOregon97477
Charlotte Hagerman, PhD
[email protected]
4109372035

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By research site
Oregon Research Institute Community and Evaluation Services· Springfield, OR

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