School of Health Sciences, Faculty of Health, The University of Newcastle, Newcastle, NSW, Australia.
Obes Rev. 2010 Apr;11(4):306-21. doi: 10.1111/j.1467-789X.2009.00646.x. Epub 2009 Sep 14.
The objectives of this systematic review are to evaluate the effectiveness of web-based interventions on weight loss and maintenance and identify which components of web-based interventions are associated with greater weight change and low attrition rates. A literature search from 1995 to April 2008 was conducted. Studies were eligible for inclusion if: participants were aged >or=18 years with a body mass index >or=25, at least one study arm involved a web-based intervention with the primary aim of weight loss or maintenance, and reported weight-related outcomes. Eighteen studies met the inclusion criteria. Thirteen studies aimed to achieve weight loss, and five focused on weight maintenance. Heterogeneity was evident among the studies with seven research questions examined across interventions of varying intensity. Seven studies were assessed for effectiveness based on percentage weight change, with four studies deemed effective. Although the four meta-analyses suggest meaningful weight change, it is not possible to determine the effectiveness of web-based interventions in achieving weight loss or maintenance due to heterogeneity of designs and thus the small number of comparable studies. Higher usage of website features may be associated with positive weight change, but we do not know what features improve this effect or reduce attrition.
本系统评价的目的在于评估基于网络的干预措施在减肥和维持体重方面的效果，并确定哪些网络干预措施的组成部分与更大的体重变化和低流失率相关。对 1995 年至 2008 年 4 月期间的文献进行了检索。如果符合以下标准，则研究可以被纳入：参与者年龄大于等于 18 岁，体重指数大于等于 25，至少有一个研究组涉及以减肥或维持体重为主要目标的基于网络的干预措施，并报告了与体重相关的结果。有 18 项研究符合纳入标准。13 项研究旨在实现减肥，5 项研究关注体重维持。各研究之间存在明显的异质性，涉及不同强度干预措施的 7 个研究问题。根据体重百分比变化评估了 7 项研究的效果，其中 4 项研究被认为是有效的。虽然四项荟萃分析表明体重有明显变化，但由于设计的异质性，以及可比较研究的数量较少，因此无法确定基于网络的干预措施在实现减肥或维持体重方面的有效性。更多地使用网站功能可能与积极的体重变化相关，但我们不知道哪些功能可以改善这种效果或减少流失。
