iReach2: Internet Obesity Treatment Enhanced With Motivational Interviewing
Study Details
Study Description
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.
Condition or Disease | Intervention/Treatment | Phase |
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N/A |
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.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Active Comparator: Internet Obesity Treatment Participants will attend weekly class sessions on line and track food and exercise in an on-line journal. |
Behavioral: Internet Obesity Treatment
Participants will engage in self monitoring, will receive skills training to help cope with environmental triggers, and will receive nutrition advice.
Other Names:
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Experimental: Internet Obesity Treatment with MI 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. |
Behavioral: Internet Obesity Treatment with MI
In addition to weekly group meetings, self-monitoring through recording calorie and fat intake daily as well as exercise, participants will meet one-on-one with an MI counselor on-line in order to augment an individual's motivation to change behavior.
Other Names:
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Experimental: Contingent MI Intervention is the same as for the MI arm, however participants will only receive MI if meeting certain treatment participation conditions. |
Behavioral: Contingent MI
Participants will attend weekly behavioral internet meetings. They may or may not receive Motivational Interviewing depending on their class attendance.
Other Names:
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Outcome Measures
Primary Outcome Measures
- Change in Body Weight [6 months]
Weights will be taken in street clothes without shoes using a hospital quality digital floor model scale.
- Change in Body Weight [12 months]
- Change in Body Weight [18 months]
- Change in body weight [0]
Weights will be taken in street clothes without shoes using a hospital quality digital floor model scale. Height will be taken at baseline using a wall-mounted stadiometer and BMI will be calculated as weight (kg)/height(m2)
Secondary Outcome Measures
- Adherence to Treatment Components [6 months]
Items will include attendance at chat group meetings and completion of online food diaries and exercise records.
- Adherence to Treatment Components [12 months]
- Adherence to Treatment Components [18 months]
- Motivation Measures [0]
We will assess participant motivation for participating in a weight reduction program and adhering to the program.
- Motivation Measures [6]
- Motivation Measures [12 months]
- Motivation Measures [18 months]
Eligibility Criteria
Criteria
Inclusion Criteria:
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must be over 18
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must have a BMI between 18 and 50
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must live within 60 minutes driving distance of University of Arkansas, Little Rock, AR, or University of Vermont, Burlington, Vermont
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must be able to walk for exercise
Exclusion Criteria:
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | University of Arkansas for the Medical Sciences | Little Rock | Arkansas | United States | 72205 |
2 | Behavioral Weight Management Program/Univ of Vermont | Burlington | Vermont | United States | 05405 |
Sponsors and Collaborators
- University of Vermont
- University of Arkansas
Investigators
- Principal Investigator: Jean R Harvey Berino, PhD., University of Vermont
- Principal Investigator: Delia Smith-West, PhD., UAMS
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 10-124