Weight change in a commercial web-based weight loss program and its association with website use: cohort study.
Weight change in a commercial web-based weight loss program and its association with website use: cohort study.
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DOI：
10.2196/jmir.1756
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发表时间：
2011-10-12
影响因子：
7.4
通讯作者：
Collins CE
中科院分区：
文献类型：
--
作者：
Neve M;Morgan PJ;Collins CE
科学文献中关于商业减肥计划的有效性的信息很少，包括基于网络的计划。基于网络的减肥计划的潜力已经得到承认，但它们实现显著减肥的能力尚未得到证实。研究的目的是评估一大批参加了为期12周或52周的商业网络减肥计划的人的体重变化，并描述参与者对该计划的使用与体重变化的关系。参与者参加了2007年8月15日至2008年5月31日期间的澳大利亚商业网络减肥计划。使用自我报告的每周体重记录来确定订阅12周和52周后的体重变化。初步分析使用广义线性混合模型(GLMM)估计了订阅12周的所有参与者和订阅52周的参与者的体重变化。采用最后一次观察结转(LOCF)方法进行敏感性分析。从计划注册到12周和52周描述网站使用(即，参与者登录、在基于网络的日记中做出食物或锻炼条目或发布到讨论论坛的天数)，并使用Kruskal-Wallis检验来检验按体重变化百分比类别的网站使用的差异。参与者(n=9599)的平均年龄(标准差[SD])为35.7(9.5)岁，主要为女性(86%或8279/9599)和肥胖(61%或5866/9599)。包括所有参与者在内的初步GLMM分析结果发现，12周订阅者(n=6943)和52周订阅者(n=2656)的平均体重变化百分比为−6.2%和−6.9%。用LOCF法进行敏感性分析，12周和52周后−平均重量变化3.0%，−平均重量变化3.5%。随着权重变化百分比的提高，所有网站功能的使用显著增加(P<；.01)。商业网络减肥计划的12周和52周订阅者的减肥效果很可能在初步和敏感性分析结果的范围内。虽然这表明，平均而言，可以实现临床上重要的减肥，但还需要进一步的研究，以使用客观的测量方法前瞻性地评估这一基于网络的商业减肥计划的有效性。更多的网站使用和更多的减肥之间的潜在联系也需要进一步的评估，因为可能需要制定策略来改善参与者对基于网络的计划功能的使用。
There is a paucity of information in the scientific literature on the effectiveness of commercial weight loss programs, including Web-based programs. The potential of Web-based weight loss programs has been acknowledged, but their ability to achieve significant weight loss has not been proven. The objectives were to evaluate the weight change achieved within a large cohort of individuals enrolled in a commercial Web-based weight loss program for 12 or 52 weeks and to describe participants’ program use in relation to weight change. Participants enrolled in an Australian commercial Web-based weight loss program from August 15, 2007, through May 31, 2008. Self-reported weekly weight records were used to determine weight change after 12- and 52-week subscriptions. The primary analysis estimated weight change using generalized linear mixed models (GLMMs) for all participants who subscribed for 12 weeks and also for those who subscribed for 52 weeks. A sensitivity analysis was conducted using the last observation carried forward (LOCF) method. Website use (ie, the number of days participants logged on, made food or exercise entries to the Web-based diary, or posted to the discussion forum) was described from program enrollment to 12 and 52 weeks, and differences in website use by percentage weight change category were tested using Kruskal-Wallis test for equality of populations. Participants (n = 9599) had a mean (standard deviation [SD]) age of 35.7 (9.5) years and were predominantly female (86% or 8279/9599) and obese (61% or 5866/9599). Results from the primary GLMM analysis including all enrollees found the mean percentage weight change was −6.2% among 12-week subscribers (n = 6943) and −6.9% among 52-week subscribers (n = 2656). Sensitivity analysis using LOCF revealed an average weight change of −3.0% and −3.5% after 12 and 52 weeks respectively. The use of all website features increased significantly (P < .01) as percentage weight change improved. The weight loss achieved by 12- and 52-week subscribers of a commercial Web-based weight loss program is likely to be in the range of the primary and sensitivity analysis results. While this suggests that, on average, clinically important weight loss may be achieved, further research is required to evaluate the efficacy of this commercial Web-based weight loss program prospectively using objective measures. The potential association between greater website use and increased weight loss also requires further evaluation, as strategies to improve participants’ use of Web-based program features may be required.
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影响因子：
158.5
作者：
Knowler, WC;Barrett-Connor, E;Nathan, DM
通讯作者：
Nathan, DM
影响因子：
--
作者：
Andreyeva, Tatiana;Long, Michael W.;Grode, Gabrielle M.
通讯作者：
Grode, Gabrielle M.
影响因子：
4.7
作者：
Harvey-Berino, Jean;Krukowski, Rebecca A.;West, Delia S.
通讯作者：
West, Delia S.
对成人基于网络的减肥干预措施的评论。
DOI：
10.1111/j.1467-789x.2010.00787.x
发表时间：
2011-05
期刊：
Obesity reviews : an official journal of the International Association for the Study of Obesity
影响因子：
--
作者：
Arem H;Irwin M
通讯作者：
Irwin M
影响因子：
3.4
作者：
Jonasson, J.;Linne, Y.;Rossner, S.
通讯作者：
Rossner, S.