Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT04520256 |
Other study ID # |
R01DK117857 |
Secondary ID |
|
Status |
Completed |
Phase |
Phase 2/Phase 3
|
First received |
|
Last updated |
|
Start date |
September 22, 2020 |
Est. completion date |
May 18, 2023 |
Study information
Verified date |
March 2024 |
Source |
The Miriam Hospital |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
When delivered online, behavioral obesity treatments have the potential to reach large
numbers of individuals with overweight/obesity and produce significant improvements in health
and wellbeing. In order to maximize the public health benefit of disseminating these
treatments online, this study will use the Multiphase Optimization Strategy (MOST) framework
to most quickly and efficiently determine which, if any, of 5 innovative intervention
components, alone or in combination, increases the proportion of patients achieving a ≥5%
weight loss, and mean weight loss, after a 12-month online behavioral obesity treatment.
Description:
Decades of research have demonstrated that behavioral obesity treatments can produce
clinically significant weight losses that improve health and disease risk/severity. However,
these treatments have not been disseminated widely due to high costs and lack of qualified
providers. The investigators therefore aim to develop and test a fully automated online
obesity treatment that would produce clinically significant weight losses (i.e., ≥ 5 % of
initial body weight) when delivered online. In order to maximize the public health impact of
online obesity treatment, and advance the science of online behavioral intervention in
general, it is imperative to evaluate innovative behavioral intervention components with the
potential to optimize weight loss outcomes. Because digital health technology evolves
rapidly, this research will use the Multiphase Optimization Strategy (MOST) framework to most
quickly and efficiently determine which, if any, of 5 innovative intervention components,
alone or in combination, increases the proportion of patients achieving a ≥5% weight loss,
and mean weight loss, of the online Rx Weight loss (RxWL) program at 12- months. The 5
intervention components to be tested are: (a) Web-based virtual reality intervention for
training in basic behavioral weight loss skills; tailored interactive intervention targeting
(b) structured physical activity and (c) dysregulated eating; (d) a platform for social
interaction including opportunities for friendly competition, and (e) interactive video
feedback with content tailored to the unique needs of each participant and a focus on dietary
skills. A sample of 384 individuals with BMI ≥ 25 will be randomized to receive RxWL and 0-5
of the experimental intervention components in a full factorial experiment. This design will
allow the investigators to determine which intervention components maximize weight loss and
whether there are favorable combinations of components. In addition, by evaluating the
effects of each component on proximal outcomes (i.e., mediators) it will be possible learn
not only which components are (or are not) effective but also why or how they exert their
effects. This project advances the science of behavioral obesity treatment, and will directly
impact the care of patients receiving RxWL.