Optimizing Self-Monitoring Feedback Delivery for the Treatment of Overweight and Obesity

NCT ID: NCT07227051

Last Updated: 2025-11-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-02-01

Study Completion Date

2028-02-28

Brief Summary

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The purpose of this research study is to learn how to best provide weekly feedback on individual progress toward intervention goals during a weight loss program.

Detailed Description

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The goal of this micro-randomized factorial trial is to learn how to best deliver self-monitoring feedback during a behavioral weight management intervention. All study participants will be provided with a "Weight Loss 101" session that provides weight loss education and behavioral skills training. At this meeting, participants will be taught how to use study-provided tools to self-monitor their dietary intake, physical activity, and weight. At the end of each week of the intervention, participants will receive an interventionist-composed feedback message based on their self-monitoring data. Every message will contain feedback about how often the participant self-monitored their dietary intake, physical activity, and weight (that is, the number of days each week that the participant monitored each) along with a message about their weight trajectory. Participants will be randomized each week to receive (or not receive) four additional feedback components each week.

The main questions that this study aims to answer are:

* which of the four additional feedback components improve adherence to self-monitoring, intervention goals, and weight loss the week after they are received?
* are there any differences in message impact depending on the person receiving the message (for example, do some messages work better for younger versus older participants) or their context (for example, are certain messages more or less helpful depending on how well the person is doing in the program)?

Conditions

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Obesity & Overweight Obesity (Disorder)

Keywords

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weight loss self-monitoring smartphone app lifestyle intervention digital health mHealth physical activity dietary change e-scale wearables activity monitor

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Micro-randomized Factorial. Under a 2x2x2x2 factorial design, participants will be randomized each week for 16 weeks to one of 16 conditions
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Self Monitoring Feedback

Participants enrolled in the Feedback Optimization trial will be asked to complete a 60-minute Weight Loss 101 session and to track their dietary intake, physical activity, and weight each day using study-provided tools. After the first week of self-monitoring (used as a run-in), participants will be provided with weekly feedback messages. The focus and content of these messages will vary, based on a 2x2x2x2 factorial design.

Group Type EXPERIMENTAL

Feedback on Calorie Goal Attainment

Intervention Type BEHAVIORAL

Feedback composed by a study interventionist that focuses on the participant's progress toward meeting their caloric intake goal.

Feedback on Dietary Quality

Intervention Type BEHAVIORAL

Feedback composed by a study interventionist that provides comments on specific dietary choices that may impact weight loss success.

Feedback on Physical Activity Goal Attainment

Intervention Type BEHAVIORAL

Feedback composed by a study interventionist that focuses on the participant's progress toward meeting their physical activity goal.

Goal Setting Prompt

Intervention Type BEHAVIORAL

An open-text goal setting prompt, composed by the study interventionist, that encourages the participant to set a behavioral goal for the following week.

Interventions

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Feedback on Calorie Goal Attainment

Feedback composed by a study interventionist that focuses on the participant's progress toward meeting their caloric intake goal.

Intervention Type BEHAVIORAL

Feedback on Dietary Quality

Feedback composed by a study interventionist that provides comments on specific dietary choices that may impact weight loss success.

Intervention Type BEHAVIORAL

Feedback on Physical Activity Goal Attainment

Feedback composed by a study interventionist that focuses on the participant's progress toward meeting their physical activity goal.

Intervention Type BEHAVIORAL

Goal Setting Prompt

An open-text goal setting prompt, composed by the study interventionist, that encourages the participant to set a behavioral goal for the following week.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Age greater than or equal to 18 years
* BMI greater than or equal to 25.0 kg/m2
* Weight less than or equal to 175 kg (due to scale limit)
* Own a smartphone compatible with Fitbit (e.g., an Apple iPhone running iOS 16.4 or higher or Android smartphone running Android 11 or higher) with a cellular and data plan

Exclusion Criteria

* Weight greater than 175 kg (due to a weight limit of the study-provided scale)
* Smartphone device owned deemed incompatible with the Fitbit App
* History of bariatric surgery or plans to obtain bariatric surgery during the study period
* Current use of weight loss medications, or use of weight loss medications in the 6 months prior to initial pre-screening
* Currently participating in a weight-loss program
* Weight loss of greater than or equal to 10 lbs in the 6 months prior to initial pre-screening
* Physical limitations that prevent walking at a brisk pace for at least 10 minutes without stopping
* Use of a pacemaker or other implanted medical device
* Currently pregnant
* Currently breastfeeding
* Less than 1-year post-partum
* Plans to become pregnant within the study period
* Lack of written confirmation that the potential participant has discussed study participation with their physician if they have been diagnosed with diabetes, hypertension, or has have a history of coronary heart disease
* One or more study participants living in the household (enrollment limited to one participant per household)
* Medical conditions that contraindicate weight loss or prevent completion of the study (e.g., current diagnosis of cancer or terminal illness, dementia, etc.)
* Recent (in the past 6 months) changes in medications that affect weight
* Self-reported eating disorder within past 5 years
* Unable to complete the 17-week study (due to plans to relocate during the study period, etc.)
* Unable or unwilling to provide informed consent
* Unable to read English at the 5th grade level
* Unwilling to accept random assignment
* Unable or unwilling to download the study smartphone application, wear the physical activity monitor, or use the study e-scale
* Failure to complete baseline assessment measures
* Failure to complete at least 4 out of 6 days of self-monitoring dietary and weight self-monitoring during the behavioral run-in period
* Any other condition(s) which, in the opinion of the Principal Investigator, would adversely affect participation in the study
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role collaborator

University of Virginia

OTHER

Sponsor Role collaborator

University of Florida

OTHER

Sponsor Role collaborator

Wake Forest University Health Sciences

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Kathryn M. Ross, Ph.D., M.P.H.

Role: PRINCIPAL_INVESTIGATOR

Aurora Research Institute LLC

Rebecca A. Krukowski, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Virginia

Locations

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Advocate Aurora Research Institute

Milwaukee, Wisconsin, United States

Site Status

Countries

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United States

Central Contacts

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Ramona Donovan, M.S.

Role: CONTACT

Phone: 847-723-7157

Email: [email protected]

Teace Markwalter, M.P.H., CHES

Role: CONTACT

Phone: 866-271-7217

Email: [email protected]

Facility Contacts

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Ramona Donovan, M.S.

Role: primary

Other Identifiers

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R01DK140099

Identifier Type: NIH

Identifier Source: secondary_id

View Link

IRB00135066

Identifier Type: -

Identifier Source: org_study_id