Disseminating Effective Habits for Long-Term Weight Loss
研究概览
地位
详细说明
Overweight and obesity are serious threats to public health. Over the last 20 years, the percentage of overweight and obese Americans, as well as the rate of diabetes, have grown tremendously (Cowie, Rust et al. 2006).
Few individuals are successful at long-term weight loss. Long-term weight loss is an elusive, yet sought after goal for many Americans (2000). Fewer than 5% of adults are successful in maintaining a 20 pound weight loss for at least 2 years (Klem, Wing et al. 1997). While medications can be effective, they produce only small amounts of weight loss, carry a significant cost and appear to be effective only while being taken (2000). Surgery is an effective option, though the procedure has tremendous costs and potential complications (2000). This points to the need for innovative and effective treatments that helps individuals over the longer-term.
Some, but not all, web-based treatments for weight loss have been shown to be effective. A recent study by Tate and colleagues showed that individuals who received counseling emails from a human or automated emails from a computer lost more weight than individuals who received neither(7.3 kg lost v. 4.9 kg and 2.6 kg, respectively) (Tate, Jackvony et al. 2006) (Tate, Jackvony et al. 2003). The feedback in the emails was based on diet and physical activity information that the individuals entered online. Dr. Harvey-Berino and colleagues has shown that social support delivered via the Internet can help weight loss efforts to the same degree as in person support (Harvey-Berino, Pintauro et al. 2004). Other studies have been mixed in their effects (Williamson, Walden et al. 2006) (Gold, Burke et al. 2007) (Wing, Tate et al. 2006), though there has generally been an effect from human feedback delivered via a computer. Other than the recent study by Tate and colleagues, no fully automated website has been effective at producing weight loss. It is our belief that fully automated systems are needed to meet the needs, in a cost-effective manner, of the 80 million overweight Americans who will need life-long help in losing weight and in maintaining their weight loss.
During an earlier phase of the study, 50 in-depth interviews were conducted with individuals who have been successful at losing weight and keeping it off. These individuals were asked specifically about which habits they use to maintain their weight loss, how these habits are implemented and how barriers to using these habits are overcome. These interviews were transcribed and the data entered into a website, to be used as part of the intervention to be tested in this clinical trial.
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Pennsylvania
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Hershey、Pennsylvania、美国、17033
- Penn State College of Medicine General Clinical Research Center
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Age 21-65
- BMI 27-40 kg/m2
- Fluently speaks and reads English
- Access to the Internet at home or at work
- Valid email address
- Access to a scale for weekly weigh-ins
- Agree not to seek additional weight loss treatment
- Agree to come back regardless of amount of weight lost
- Participant in NCT00377208
Exclusion Criteria:
- Current, planned, or previous pregnancy within 12 months
- Planned or past weight loss surgery
- Recent weight loss of >= 15 lbs in the past 6 months
History of:
- Myocardial infarction
- Stroke
- Type 1 and Type 2 diabetes
- Unstable angina
- Congestive heart failure
- Inability to exercise due to severe arthritis or other musculoskeletal problems
- Cancer (except non-melanoma skin cancer)
- Evidence of severe cognitive impairment or major psychiatric illness
- Plans to move in the next 6 months
- Answering yes to any question on the Physical Activity Readiness Questionnaire (PAR-Q)
学习计划
研究是如何设计的?
设计细节
- 主要用途:治疗
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:三倍
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的:1
Participants in the intervention condition are encouraged to access the Achieve Together website at least once each week. During each login, the following activities will occur:
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Comparison of weight change among those participants in the weight loss intervention (immediate access to the weight loss website) and those participants in the control group (delayed access to the weight loss website).
access to the Achieve Together website immediately (Arm 1) or delayed (Arm 2)
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无干预:2
Participants in the control condition will have to wait 12 weeks before accessing the Achieve Together website.
These participants will be a given a log where they can document weekly weight measurements (this part did not happen).
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Body weight
大体时间:3 months
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Weight will be measured using a calibrated, digital scale
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3 months
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Blood Pressure Control
大体时间:3-Months
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3-Months
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Physical Activity, using the International Physical Activity Questionnaire
大体时间:3 months
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Results are still being analyzed
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3 months
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Block 2005 FFQ for assessment of diet and physical activity
大体时间:3 Months
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3 Months
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IWQOL-Lite, a validated, 31-item, self-report measure of obesity-specific
大体时间:3 Months
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3 Months
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合作者和调查者
调查人员
- 首席研究员:Christopher N Sciamanna, M.D., MPH、Penn State College of Medicine
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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