Clinical trial NCT01232699: Internet Obesity Treatment Enhanced With Motivational Interviewing
Official title: Internet Obesity Treatment Enhanced With Motivational Interviewing
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Obesity
Keywords: obesity
weight loss
internet treatment
motivational interviewing
Lead sponsor: University of Vermont
Sponsor class: OTHER
Collaborators: name: University of Arkansas
First posted: 2010-11-02
Enrollment: 495
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: Internet-based weight control programs have been shown effective in producing weight loss, but in-person delivery of behavioral weight control produces significantly greater weight loss than on-line delivery of the same program. Motivational Interviewing has been shown to increase weight loss when delivered as an adjunct to in-person weight loss programs but has not been examined in conjunction with web-based obesity treatment. Therefore, the overall goal of this project is to determine if the addition of on-line Motivational Interviewing to a web-based group behavioral obesity treatment program will augment weight loss outcomes.

Detailed description: This randomized controlled trial is designed to determine whether weight losses in a group behavioral weight loss intervention conducted over the Internet are increased with the inclusion of individual, online MI sessions. All participants will receive the same online 6-month group-based behavioral weight loss program followed by 12 months of weight maintenance. Overweight and obese adults at two study sties (N=426) will be randomized to (1) Internet intervention; or 2) Internet intervention with individual MI sessions occurring at three month intervals on a fixed schedule (Internet+MI-Fixed). Assessments will be conducted every six months and will include measures of body weight and height, diet and exercise behaviors, Quality of Life, adherence measures (eg., attendance, compliance with self-monitoring), social influence components, motivation, treatment satisfaction, demographic data and descriptive information regarding use of website components. A third arm was added for the final 3 intervention cohorts. All participants received the program as described above with the addition of motivational interviewing contingent on participants' attendance in classes.

Eligibility criteria: Inclusion Criteria:

* must be over 18
* must have a BMI between 18 and 50
* must live within 60 minutes driving distance of University of Arkansas, Little Rock, AR, or University of Vermont, Burlington, Vermont
* must be able to walk for exercise

Exclusion Criteria:

Primary outcomes:
measure: Change in Body Weight
timeFrame: 6 months
measure: Change in Body Weight
timeFrame: 12 months
measure: Change in Body Weight
timeFrame: 18 months
measure: Change in body weight
timeFrame: 0
Secondary outcomes:
measure: Adherence to Treatment Components
timeFrame: 6 months
measure: Adherence to Treatment Components
timeFrame: 12 months
measure: Adherence to Treatment Components
timeFrame: 18 months
measure: Motivation Measures
timeFrame: 0
measure: Motivation Measures
timeFrame: 6
measure: Motivation Measures
timeFrame: 12 months
measure: Motivation Measures
timeFrame: 18 months
Other outcomes:
Locations:
city: Little Rock
country: United States
facility: University of Arkansas for the Medical Sciences
state: Arkansas
city: Burlington
country: United States
facility: Behavioral Weight Management Program/Univ of Vermont
state: Vermont
Study officials:
affiliation: University of Vermont
name: Jean R Harvey Berino, PhD.
role: PRINCIPAL_INVESTIGATOR
affiliation: UAMS
name: Delia Smith-West, PhD.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Harvey J, Krukowski R, Priest J, West D. Log Often, Lose More: Electronic Dietary Self-Monitoring for Weight Loss. Obesity (Silver Spring). 2019 Mar;27(3):380-384. doi: 10.1002/oby.22382.
citation: West DS, Harvey JR, Krukowski RA, Prewitt TE, Priest J, Ashikaga T. Do individual, online motivational interviewing chat sessions enhance weight loss in a group-based, online weight control program? Obesity (Silver Spring). 2016 Nov;24(11):2334-2340. doi: 10.1002/oby.21645. Epub 2016 Sep 12.
citation: Krukowski RA, DiLillo V, Ingle K, Harvey JR, West DS. Design and Methods of a Synchronous Online Motivational Interviewing Intervention for Weight Management. JMIR Res Protoc. 2016 Apr 19;5(2):e69. doi: 10.2196/resprot.5382.