Internet Obesity Treatment Enhanced With Motivational Interviewing (iReach2)

University of Vermont

Status: Completed

Conditions: Obesity

Treatments: Behavioral: Contingent MI; Behavioral: Internet Obesity Treatment; Behavioral: Internet Obesity Treatment with MI

Study type: Interventional

Funder types: Other

Identifiers

NCT01232699

10-124

Details and patient eligibility

About

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.

Full 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.

Enrollment: 495 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion 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:

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Single Group Assignment

Masking: None (Open label)

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495 participants in 3 patient groups

Internet Obesity Treatment

Active Comparator group

Description:

Participants will attend weekly class sessions on line and track food and exercise in an on-line journal.

Treatment:

Behavioral: Internet Obesity Treatment

Internet Obesity Treatment with MI

Experimental group

Description:

Participants will attend weekly classes on line, record food and exercise in an on-line journal, and will have no more than 6 individual motivational interviewing sessions.

Treatment:

Behavioral: Internet Obesity Treatment with MI

Contingent MI

Experimental group

Description:

Intervention is the same as for the MI arm, however participants will only receive MI if meeting certain treatment participation conditions.

Treatment:

Behavioral: Contingent MI