Exploring the Optimal Duration of a Group-based Online Behavioral Weight Loss Program
調査の概要
状態
条件
詳細な説明
Obesity presents a vexing public health challenge. Effective behavioral weight control treatments are available, loss, and projections show these interventions could have a significant impact on overall population health if the interventions were more broadly available. Internet delivery of behavioral lifestyle interventions has potential for broad reach and is thus an attractive option, although average weight losses tend to be lower than in a comparable behavioral program delivered in-person. Nonetheless, internet-delivered group behavioral weight control programs which incorporate synchronous chat "group sessions" can produce an average of 5% weight loss, with almost a quarter of participants losing at least 10% of their body weight at 6-months, and thus offer weight losses which are clinically significant. Online programs are more cost effective than in-person delivery of the same program, but efforts to optimize the delivery of online programs to achieve the best weight outcomes balanced against delivery cost are in their infancy. The current feasibility study seeks to explore critical elements to allow testing of whether a moderate dose program (16 online weekly video chat sessions) can produce weight losses comparable to the higher dose (24 weekly video chat sessions) internet-delivered behavioral weight loss program which is the established standard which we have demonstrated effective in the past. This pilot study will provide proof-of-concept to determine whether the approach is promising and if it is feasible to conduct. The pilot will explore the feasibility of recruiting individuals to weight loss programs of varying duration (4 months vs. 6 months), refine our ability to deliver the 16-session program, compare 6-month weight losses between the two programs of shorter and longer duration, respectively, and obtain data to characterize weight maintenance experiences and retention over the 12-month study period.
Up to 80 individuals will be randomized into an online behavioral weight loss program lasting 4 months or 6 months. Individuals will meet weekly for one hour in a synchronous chat session with an experienced behavioral weight control counselor. Participants will be followed over 12 months from study start.
研究の種類
段階
- 適用できない
連絡先と場所
研究場所
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South Carolina
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Columbia、South Carolina、アメリカ、29208
- University of South Carolina
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Vermont
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Burlington、Vermont、アメリカ、05405
- Behavioral Weight Management Program/Univ of Vermont
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- female
- BMI between 25-55
- free of medical problems that might contraindicate participation in a behavioral weight reduction program containing an exercise component
- not currently on medication that might affect weight loss
- not currently pregnant or pregnant in the previous 6 months or currently breastfeeding
- not enrolled in another weight reduction program
- must have a computer (at home or work) with access to the Internet and a video camera
- must have a smart phone (to allow use of step counting and dietary intake self-monitoring apps)
- Only one member of a household will be eligible to participate
- must successfully complete a self-monitoring diary of foods consumed for a week during screening for study eligibility
- demonstrate the ability to access the website successfully (practice chat)
- agree to be randomized to either group
- must be willing to share access to self-monitoring information collected via the app MyFitnessPal, and Fitbit.com weight data collected via the digital smart scale (scale will be provided)
Exclusion Criteria:
- have had a heart attack or a stroke in the past 6 months,
- have ever had weight loss surgery,
- have lost more than 10 pounds in the previous 6 months,
- are currently taking medications for weight loss,
- are required by their doctor to follow a special diet (other than a low fat diet)
- have plans to move from the area in the upcoming 12 months
- who have schedules that will make it likely that they will have difficulty attending the scheduled "chat" groups
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：Four Month Duration
Participants will meet weekly online via video chat with an experienced behavioral weight loss counselor in a synchronous 1-hour chat session for 16 weeks in a well-established behavioral weight loss program.
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Participants meet weekly on line with other group participants for 16 weeks.
The group-based online behavioral weight control program incorporates the elements of current thinking and empirical data on successful weight loss programs, including restricted calorie intake and increased physical activity.
Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted, and reinforced throughout the program.
Weekly "group meetings" in a video chat forum led by an experienced group weight control counselor are the venue for the group process, and extensive web-based resources to support behavior changes are offered.
The online groups are "closed" such that those individuals who start the group remain in that group for the duration of their participation.
Weight loss counselor will provide feedback and encouragement to participants after reviewing food diaries via weekly emails.
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アクティブコンパレータ：Six Month Duration
Participants will meet weekly online via video chat with an experienced behavioral weight loss counselor in a synchronous 1-hour chat session for 24 weeks in a well-established behavioral weight loss program.
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Participants meet weekly on line with other group participants for 24 weeks.
The group-based online behavioral weight control program incorporates the elements of current thinking and empirical data on successful weight loss programs, including restricted calorie intake and increased physical activity.
Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted, and reinforced throughout the program.
Weekly "group meetings" in a video chat forum led by an experienced group weight control counselor are the venue for the group process, and extensive web-based resources to support behavior changes are offered.
The online groups are "closed" such that those individuals who start the group remain in that group for the duration of their participation.
Weight loss counselor will provide feedback and encouragement to participants after reviewing food diaries via weekly emails.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in Weight from baseline to 2, 4, 6 and 12 months
時間枠：2 months, 4 months, 6 months, 12 months
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Weight loss at each follow-up will be calculated as % kg lost from baseline.
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2 months, 4 months, 6 months, 12 months
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Process measures: Attendance by subjects at weekly online meetings
時間枠：2,4,6 months
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The group facilitator will take attendance at weekly online class meetings.
Attendance at on-line meetings will be calculated as % of meetings actually attended out of 16 or 24 meetings that were scheduled according to condition assignment
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2,4,6 months
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Process measures: Completion of weekly online treatment modules by subjects
時間枠：2, 4, 6 months
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Completion of online treatment modules by each subject by condition will be calculated as % modules completed out of 16 or 24 modules scheduled according to condition assignment.
Module completion is defined as viewing the module and completing the online activity questions associated with each respective module.
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2, 4, 6 months
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協力者と研究者
スポンサー
捜査官
- 主任研究者：Delia Smith West, PhD、University of South Carolina
- 主任研究者：Jean R Harvey, PhD、University of Vermont
研究記録日
主要日程の研究
研究開始 (予想される)
一次修了 (予想される)
研究の完了 (予想される)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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