TY -的AU -理查森,卡罗琳R盟——中方,洛林R AU -詹尼,艾德丽安W非盟-古德里奇,大卫·E盟——森Ananda AU -赫斯,迈克尔·L AU - Mehari Kathleen S AU - Fortlage劳里盟——雷斯尼克,保罗J盟——Zikmund-Fisher布莱恩J盟——说明,维克多J AU -移液管,约翰D PY - 2010 DA - 2010/12/17 TI -一个在线社区提高依从性在一个Internet-Mediated走程序。第1部分:随机对照试验的结果JO - J Med Internet Res SP - e71 VL - 12 IS - 4kw -互联网KW -步行KW -社会支持KW -慢性疾病管理KW -坚持KW -磨损KW -保留KW -参与KW -在线社区KW -锻炼AB背景:大约一半的美国成年人没有达到推荐的身体活动指南。面对面的生活方式干预措施可以改善健康结果，但不太可能改善人口水平，因为它们可能难以传播，维持费用昂贵，而且对接受者不方便。相比之下，基于互联网的行为改变干预措施可以以较低的成本广泛传播。然而，一些以互联网为媒介的课程的影响受到了高流失率的限制。在线社区允许参与者通过发布和阅读消息相互交流，这可能会减少参与者的流失。目的:我们的目标是测量在以互联网为媒介的步行项目中添加在线社区功能对参与者损耗和平均每日步数的影响。方法:这项随机对照试验包括久坐不动、经常使用电子邮件且至少有以下症状之一的成年人:超重(体重指数(BMI)≥25)、2型糖尿病或冠状动脉疾病。所有参与者(n = 324)在16周的干预期间佩戴增强型计步器，并将步数数据上传到研究服务器。参与者可以登录研究网站，查看他们的步行进度图表、个人定制的激励信息和每周计算的目标。 Participants were randomized to 1 of 2 versions of a Web-based walking program. Those randomized to the “online community” arm could post and read messages with other participants while those randomized to the “no online community" arm could not read or post messages. The main outcome measures were participant attrition and average daily step counts over 16 weeks. Multiple regression analyses assessed the effect of the online community access controlling for age, sex, disease status, BMI, and baseline step counts. Results: Both arms significantly increased their average daily steps between baseline and the end of the intervention period, but there were no significant differences in increase in step counts between arms using either intention-to-treat or completers analysis. In the intention-to-treat analysis, the average step count increase across both arms was 1888 ± 2400 steps. The percentage of completers was 13% higher in the online community arm than the no online community arm (online community arm, 79%, no online community arm, 66%, P = .02). In addition, online community arm participants remained engaged in the program longer than no online community arm participants (hazard ratio = 0.47, 95% CI = 0.25 - 0.90, P = .02). Participants with lower baseline social support posted more messages to the online community (P < .001) and viewed more posts (P < .001) than participants with higher baseline social support. Conclusion: Adding online community features to an Internet-mediated walking program did not increase average daily step counts but did reduce participant attrition. Participants with low baseline social support used the online community features more than those with high baseline social support. Thus, online communities may be a promising approach to reducing attrition from online health behavior change interventions, particularly in populations with low social support. Trial Registration: NCT00729040; http://clinicaltrials.gov/ct2/show/NCT00729040 (Archived by WebCite at http://www.webcitation.org/5v1VH3n0A) SN - 1438-8871 UR - //www.mybigtv.com/2010/4/e71/ UR - https://doi.org/10.2196/jmir.1338 UR - http://www.ncbi.nlm.nih.gov/pubmed/21169160 DO - 10.2196/jmir.1338 ID - info:doi/10.2196/jmir.1338 ER -