Weight Loss Clinical Trial
— Opt-INOfficial title:
Opt-IN: Optimization of Remotely Delivered Intensive Lifestyle Treatment for Obesity
Verified date | January 2023 |
Source | Northwestern University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The overall objective of the proposed research is to use an innovative methodological framework, the Multiphase Optimization Strategy (MOST), to design, for the first time, an optimized, scalable version of a technology-supported intensive lifestyle intervention (INLI) for obesity. MOST involves highly efficient randomized experimentation to assess the effects of individual treatment components, and thereby identify which components and component levels make important contributions to the overall program effect on weight loss. This information then guides assembly of an optimized treatment package that achieves target outcomes with least resource consumption and participant burden. Because the intervention strategies being tested minimize in-person coaching and leverage technology that participants already own, the new optimized intervention, to be called Opt-IN, will be more scalable than traditional INLIs. Opt-IN will thus enjoy greatly increased reach, and enable significant progress in the fight against obesity.
Status | Completed |
Enrollment | 562 |
Est. completion date | September 20, 2017 |
Est. primary completion date | September 20, 2017 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years to 60 Years |
Eligibility | Inclusion Criteria: - 18 and 60 years old - BMI 25-40 kg/m2 - Weight stable (no loss or gain >25 lbs for the past 6 months) - Not enrolled in any formal weight loss program or taking anti-obesity medications, but interested in losing weight. - Own a Smartphone and be willing to install the Opt-IN app - Able to use the app to record dietary intake and weight onto the Smartphone "Buddy" participants must: - 18 years of age or older - Have access to a computer and internet - Be willing to undergo "Buddy Training" and participate in 4 webinars - Be willing to provide support and encouragement to the participant Exclusion Criteria: - Unstable medical conditions (uncontrolled hypertension, diabetes, unstable angina pectoris, myocardial infarction, transient ischemic attack, cancer undergoing active treatment, or cerebrovascular accident within the past six months) - History of diabetes requiring insulin supplementation, Crohn's Disease, or a diagnosis of obstructive sleep apnea requiring intervention (i.e. CPAP) - Use an assistive device for mobility (e.g., wheelchair, walker, cane) - Plantar fasciitis - Hospitalization for a psychiatric disorder within the past 5 years - At risk for adverse cardiovascular (CVD) events with moderate intensity activity - Cannot read the study questionnaires - Committed to following an incompatible dietary regimen - Not be pregnant, trying to get pregnant, or lactating - Bulimia, binge eating disorder, current substance abuse or dependence (besides nicotine dependence) or report active suicidal ideation - Low motivation to change - Cannot live with a current or past Opt-IN participant |
Country | Name | City | State |
---|---|---|---|
United States | Northwestern University | Chicago | Illinois |
Lead Sponsor | Collaborator |
---|---|
Northwestern University | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Penn State University |
United States,
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Pellegrini CA, Hoffman SA, Collins LM, Spring B. Corrigendum to "Optimization of remotely delivered intensive lifestyle treatment for obesity using the Multiphase Optimization Strategy: Opt-IN study protocol" [Contemp. Clin. Trials 38 (2014) 251-259]. Contemp Clin Trials. 2015 Nov;45(Pt B):468-469. doi: 10.1016/j.cct.2015.09.001. Epub 2015 Nov 29. No abstract available. — View Citation
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Terry PE, Brown N, Arnett DK, Cushman M, Spring B, Halpern SD, Burke LE, Grossmeier J, Goetzel R, Lang J, Calitz C, Terry PE, Sanchez E. The Art of Health Promotion ideas for improving health outcomes. Am J Health Promot. 2016 Sep;30(7):563-82. doi: 10.1177/0890117116668866. No abstract available. — View Citation
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* Note: There are 31 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Treatment Adherence | Treatment adherence is a hypothesized mediator that will be operationalized as the number of treatment sessions completed divided by the number of treatment sessions offered (12 or 24) | 6 months | |
Other | Self-monitoring Adherence | Self-monitoring is a hypothesized mediator that will be operationalized as the number of days recording weight, dietary intake, and physical activity | 6 months | |
Other | Self-efficacy | Self-efficacy is an exploratory mediator that will be assessed to examine treatment effects on confidence about performing two categories of behaviors associated with weight loss: diet and physical activity | 6 months | |
Other | Self-Regulation | Self-regulation is an exploratory mediator that will be assessed using the Three Factor Eating Questionnaire and Treatment Self-Regulation Questionnaire | 6 months | |
Other | Supportive Accountability | Supportive accountability is an exploratory mediator that will be measured by assessing two constructs that define supportive accountability: therapeutic alliance and perceived autonomy support | 6 months | |
Other | Facilitation | Facilitation is an exploratory mediator that will be measured by rating how much the tools provided by the study have changed their environment and by the Weight Management Support Inventory | 6 months | |
Primary | Weight Change (kg) From Baseline to Month 6, Main Effect of Time | Estimated mean change from Baseline to Month 6 were obtained from a linear mixed models analysis of variance to account for missing data. All randomized participants were utilized in the model (ITT analysis). | From Baseline to Month 6 | |
Primary | Weight Change (kg) From Baseline to Month 6, Time by Factor Interaction | Estimated mean change from Baseline to Month 6 were obtained from a linear mixed models analysis of variance to account for missing data. All randomized participants were utilized in the model (ITT analysis). This outcome measure is reported as an additional effect beyond that of Outcome Measure 1 (each component has it's own weight loss effect that is above and beyond the weight change calculated in the Outcome Measure 1 analyses). |
From Baseline to Month 6 | |
Secondary | Intervention for <$500 | Using the results from primary aim 1, an intervention with only active treatment components with the largest treatment effect that can be obtained for implementation costs of $500 or less was identified and built. | 6 months |
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