- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06174389
ADAPT Study: Assessing Diet, Appetite and Physiology Throughout Weight Loss Study)
December 7, 2023 updated by: Ellen Schur, MD, MS, University of Washington
Physiological Changes Underlying the Weight Loss Plateau in Human
Behavioral weight loss programs for obesity can result in weight loss and health benefits.
However, behavioral weight loss often stops despite efforts to continue losing weight, this can be called an involuntarily weight loss plateau.
This study investigates changes in metabolism and/or the brain that contribute to the occurrence of an involuntary weight loss plateau.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Detailed Description
Participants will be asked to enroll for 18-months.
Each participant will complete 3 in-person study visits, then participate an a 6-month weight loss program delivered remotely.
Some participants may be invited to complete 3 additional in-person visits.
Study Visit activities include questionnaires, blood draws, brain MRIs, body measurement and dual energy x-ray absorptiometry (DXA) scan for body composition measurement, a breathing test, and biopsies of muscle and fat tissue.
Each participant will be provided a fitness tracker and body weight scale to use throughout the study.
Study Type
Interventional
Enrollment (Estimated)
90
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Mary Webb
- Phone Number: 206-616-6360
- Email: uwadaptstudy@uw.edu
Study Contact Backup
- Name: Roz De Leon
- Phone Number: 206-685-1532
- Email: uwadaptstudy@uw.edu
Study Locations
-
-
Washington
-
Seattle, Washington, United States, 98109
- Recruiting
- University of Washington - South Lake Union
-
Contact:
- Mary Webb
- Email: uwadaptstudy@uw.edu
-
Seattle, Washington, United States, 98109
- Not yet recruiting
- Fred Hutch Cancer Center
-
Contact:
- Diana Lowry
- Email: dlowry@fredhutch.org
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Adult
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- BMI 30.0 - 50.0 kg/m2
- Able to attend study intervention classes and study visits/assessments
- Independently living with access to food preparation facilities
Exclusion Criteria:
- Current smoker or regular use of nicotine containing products and/or cannabis
- Heavy alcohol use (≥2 drinks/d for females, ≥3 drinks/d for males) or drug use
- Known cognitive impairments or h/o stroke
- Type 2 diabetes (known diagnosis or by screening A1c (≥6.5%))
- Medical conditions (chronic diseases, cancer, MS) or labs limiting ability to participate
- Females: currently pregnant (or 6-months postpartum of full-term pregnancy) and/or current breastfeeding
- Use of medications with significant effects on appetite (e.g., weight loss medications, atypical antipsychotics, stimulants) and/or chronic use of anticoagulants
- History of bariatric surgery
- History of eating disorder
- Current participation in a formal weight loss program
- Prior or current participation in a research study involving weight loss
- Weight-reduced by >10% within past year
- Weight > 330 pounds (MRI limit)
- Allergy or intolerance to or unwillingness to consume study foods provided at visit
- MRI contraindication (e.g., implanted metal, claustrophobia)
- Do not have a phone compatible with activity tracker or access to videoconferencing platform that will be used for the dietary intervention or other appropriate technology needed to complete study procedures
- Any condition(s) found by the study team and confirmed with the PI(s) that make it unsafe to participate
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Behavioral Weight Loss
Participants will undergo a behavioral weight loss program.
|
Behavioral Weight Loss Program is a modified version of the Diabetes Prevention Program.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in maximal respiratory capacity (oxygen consumption rate) in peripheral blood mononuclear cells
Time Frame: From baseline to active weight loss (at least 21 days of weight loss equivalent or greater than 0.5 pounds per week) and from baseline to weight loss plateau (after active weight loss, at least 21 days of halted weight loss, or +/- 0.25 pounds/week).
|
Mitochondrial maximal respiratory capacity will be measured in fasting samples from peripheral blood mononuclear cells.
|
From baseline to active weight loss (at least 21 days of weight loss equivalent or greater than 0.5 pounds per week) and from baseline to weight loss plateau (after active weight loss, at least 21 days of halted weight loss, or +/- 0.25 pounds/week).
|
Change in fMRI BOLD signal
Time Frame: From baseline to a weight loss plateau (after active weight loss, at least 21 days of halted weight loss, or +/- 0.25 pounds/week).
|
fMRI BOLD signal to visual food cues within a priori brain regions of interest pre and post consuming a standardized meal.
Meal-induced change will be calculated by post-pre meal BOLD signal.
|
From baseline to a weight loss plateau (after active weight loss, at least 21 days of halted weight loss, or +/- 0.25 pounds/week).
|
Entry into involuntary weight loss plateau
Time Frame: throughout 18-month enrollment
|
binary outcome (Y/N) and time from baseline
|
throughout 18-month enrollment
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Ellen Schur, MD, MS, University of Washington
- Principal Investigator: Marian Neuhouser, PhD, RD, Fred Hutch Cancer Center
- Principal Investigator: Jenny Tong, MD, University of Washington/VA Puget Sound
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
November 29, 2023
Primary Completion (Estimated)
July 31, 2027
Study Completion (Estimated)
July 31, 2027
Study Registration Dates
First Submitted
November 13, 2023
First Submitted That Met QC Criteria
December 7, 2023
First Posted (Estimated)
December 18, 2023
Study Record Updates
Last Update Posted (Estimated)
December 18, 2023
Last Update Submitted That Met QC Criteria
December 7, 2023
Last Verified
December 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- STUDY00017667
- R01DK134417 (U.S. NIH Grant/Contract)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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