Study Results
Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.
View full resultsBasic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
COMPLETED
NA
468 participants
INTERVENTIONAL
2015-05-31
2019-06-30
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
1. Whether a weight loss counselor should decide if the traditional weight loss therapy is working either after 3 or 7 weekly sessions of therapy and
2. For those who haven't lost the expected amount of weight, whether it is more effective to add packaged meals to the traditional weight loss therapy or to change to an enhanced version of behavioral weight loss therapy.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Keywords
Explore important study keywords that can help with search, categorization, and topic discovery.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
RANDOMIZED
SEQUENTIAL
TREATMENT
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
Behavioral weight loss therapy
Emphasizes 1) identifying behaviors in need of change, 2) setting goals for change, 3) monitoring progress, 4) modifying environmental cues to facilitate change, and 5) modifying consequences to motivate change.
Behavioral weight loss therapy
All participants start with behavioral weight loss therapy which consists of 20 weekly meetings wtih a weight loss coach. Session components will include weekly weigh-in, discussion of progress and challenges and discussion of scheduled session topic. Dietary goals and physical activity goals are set. After their first session, participants are randomized to have their weight assessed at either their 3rd session or their 7th session. Both the participant and their coach are blinded to the randomization. If the participant has lost the expected amount of weight, they continue with behavioral weight loss therapy for the full 20 session.
Portion-controlled meals
Fifty percent of participants who have not lost the expected amount of weight will be re-randomized to receive portion-controlled meals in addition to standard behavioral weight loss therapy.
Portion-controlled meals
Participants continue with behavioral weight loss therapy, but this is augmented with portion-controlled meals (PCM). Adherence to energy intake goals is facilitated by consuming pre-prepared meals specifically designed to meet caloric intake guidelines. PCMs reduce individuals' motivationally- and self-regulatory-dependent planning and decision making around eating. PCMs also serve as a "teaching tool" regarding the amount and type of food people should eat in order to produce weight loss.
Acceptance-based treatment
Fifty percent of participants who have not lost the expected amount of weight will be re-randomized to receive an enhanced version of behavioral weight loss therapy teaching acceptance-based behavioral skills.
Acceptance-based treatment
Switching the therapeutic approach to an enhanced behavioral weight loss therapy teaching acceptance-based behavioral skills theoretically addresses the root problem of many weight loss challenges and boosts long-term capacity for self-regulation. Acceptance based strategies are designed to help participants identify and internalize values and lasting commitment to behavior consistent with these values. The strategies focus on increasing people's ability to forgo more pleasurable options (e.g., hedonic pleasure of food) in favor of behavior that is distinctly less pleasurable or even aversive (remaining hungry, anxious, bored). The inability to tolerate such distress is directly associated with failure of self-regulation.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Behavioral weight loss therapy
All participants start with behavioral weight loss therapy which consists of 20 weekly meetings wtih a weight loss coach. Session components will include weekly weigh-in, discussion of progress and challenges and discussion of scheduled session topic. Dietary goals and physical activity goals are set. After their first session, participants are randomized to have their weight assessed at either their 3rd session or their 7th session. Both the participant and their coach are blinded to the randomization. If the participant has lost the expected amount of weight, they continue with behavioral weight loss therapy for the full 20 session.
Portion-controlled meals
Participants continue with behavioral weight loss therapy, but this is augmented with portion-controlled meals (PCM). Adherence to energy intake goals is facilitated by consuming pre-prepared meals specifically designed to meet caloric intake guidelines. PCMs reduce individuals' motivationally- and self-regulatory-dependent planning and decision making around eating. PCMs also serve as a "teaching tool" regarding the amount and type of food people should eat in order to produce weight loss.
Acceptance-based treatment
Switching the therapeutic approach to an enhanced behavioral weight loss therapy teaching acceptance-based behavioral skills theoretically addresses the root problem of many weight loss challenges and boosts long-term capacity for self-regulation. Acceptance based strategies are designed to help participants identify and internalize values and lasting commitment to behavior consistent with these values. The strategies focus on increasing people's ability to forgo more pleasurable options (e.g., hedonic pleasure of food) in favor of behavior that is distinctly less pleasurable or even aversive (remaining hungry, anxious, bored). The inability to tolerate such distress is directly associated with failure of self-regulation.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* BMI between 30 - 45 kg/m2
* Able to walk 2 blocks without stopping
* Able to attend measurement and intervention activities in the Twin Cities area in person for 18 months
Exclusion Criteria
* History of bariatric surgery
* Current or previous diagnosis of anorexia nervosa or bulimia nervosa
* Food allergies, intolerances
21 Years
70 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Drexel University
OTHER
University of Michigan
OTHER
University of Minnesota
OTHER
University of Washington
OTHER
National Cancer Institute (NCI)
NIH
HealthPartners Institute
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Nancy E Sherwood, PhD
Role: PRINCIPAL_INVESTIGATOR
University of Minnesota
A. Lauren Crain, PhD
Role: PRINCIPAL_INVESTIGATOR
HealthPartners Institute
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
HealthPartners Institute
Bloomington, Minnesota, United States
Countries
Review the countries where the study has at least one active or historical site.
References
Explore related publications, articles, or registry entries linked to this study.
Carels RA, Darby L, Cacciapaglia HM, Douglass OM, Harper J, Kaplar ME, Konrad K, Rydin S, Tonkin K. Applying a stepped-care approach to the treatment of obesity. J Psychosom Res. 2005 Dec;59(6):375-83. doi: 10.1016/j.jpsychores.2005.06.060.
Lei H, Nahum-Shani I, Lynch K, Oslin D, Murphy SA. A "SMART" design for building individualized treatment sequences. Annu Rev Clin Psychol. 2012;8:21-48. doi: 10.1146/annurev-clinpsy-032511-143152. Epub 2011 Dec 12.
Collins LM, Murphy SA, Strecher V. The multiphase optimization strategy (MOST) and the sequential multiple assignment randomized trial (SMART): new methods for more potent eHealth interventions. Am J Prev Med. 2007 May;32(5 Suppl):S112-8. doi: 10.1016/j.amepre.2007.01.022.
Butryn ML, Webb V, Wadden TA. Behavioral treatment of obesity. Psychiatr Clin North Am. 2011 Dec;34(4):841-59. doi: 10.1016/j.psc.2011.08.006.
Rock CL, Flatt SW, Sherwood NE, Karanja N, Pakiz B, Thomson CA. Effect of a free prepared meal and incentivized weight loss program on weight loss and weight loss maintenance in obese and overweight women: a randomized controlled trial. JAMA. 2010 Oct 27;304(16):1803-10. doi: 10.1001/jama.2010.1503. Epub 2010 Oct 9.
Heymsfield SB, van Mierlo CA, van der Knaap HC, Heo M, Frier HI. Weight management using a meal replacement strategy: meta and pooling analysis from six studies. Int J Obes Relat Metab Disord. 2003 May;27(5):537-49. doi: 10.1038/sj.ijo.0802258.
Forman EM, Hoffman KL, McGrath KB, Herbert JD, Brandsma LL, Lowe MR. A comparison of acceptance- and control-based strategies for coping with food cravings: an analog study. Behav Res Ther. 2007 Oct;45(10):2372-86. doi: 10.1016/j.brat.2007.04.004. Epub 2007 Apr 18.
Sherwood NE, Butryn ML, Forman EM, Almirall D, Seburg EM, Lauren Crain A, Kunin-Batson AS, Hayes MG, Levy RL, Jeffery RW. The BestFIT trial: A SMART approach to developing individualized weight loss treatments. Contemp Clin Trials. 2016 Mar;47:209-16. doi: 10.1016/j.cct.2016.01.011. Epub 2016 Jan 26.
Emery Tavernier RL, Mason SM, Levy RL, Seburg EM, Sherwood NE. Association of childhood abuse with behavioral weight-loss outcomes: Examining the mediating effect of binge eating severity. Obesity (Silver Spring). 2022 Jan;30(1):96-105. doi: 10.1002/oby.23320.
Sherwood NE, Crain AL, Seburg EM, Butryn ML, Forman EM, Crane MM, Levy RL, Kunin-Batson AS, Jeffery RW. BestFIT Sequential Multiple Assignment Randomized Trial Results: A SMART Approach to Developing Individualized Weight Loss Treatment Sequences. Ann Behav Med. 2022 Mar 1;56(3):291-304. doi: 10.1093/abm/kaab061.
Crane MM, Seburg EM, Levy RL, Jeffery RW, Sherwood NE. Using targeting to recruit men and women of color into a behavioral weight loss trial. Trials. 2020 Jun 16;21(1):537. doi: 10.1186/s13063-020-04500-1.
Provided Documents
Download supplemental materials such as informed consent forms, study protocols, or participant manuals.