Marcus Bess H, Lewis Beth A, Williams David M, Whiteley Jessica A, Albrecht Anna E, Jakicic John M, Parisi Alfred F, Hogan Joseph W, Napolitano Melissa A, Bock Beth C
The Miriam Hospital and Brown Medical School, Providence, RI 02903, USA.
Contemp Clin Trials. 2007 Nov;28(6):737-47. doi: 10.1016/j.cct.2007.04.003. Epub 2007 May 6.
Over two-thirds of Americans access the Internet and therefore, the Internet may be an important channel for reaching the large population of sedentary individuals. The purpose of this paper is to describe the methods for a randomized controlled trial examining the efficacy of an Internet-based physical activity intervention relative to a print intervention that has been shown to be effective in previous trials. Specifically, 249 sedentary participants were randomized to receive one of three interventions: 1) Internet-based motivationally-tailored individualized feedback (Tailored Internet); 2) print-based motivationally-tailored individualized feedback (Tailored Print); or 3) physical activity websites currently available to the public (Standard Internet). Participants completed the 7-Day Physical Activity Recall interview, wore an objective physical activity monitor (i.e., ActiGraph), and participated in a treadmill fitness test at baseline, 6, and 12 months. The sample consisted of mostly women (84.2%) and Caucasian individuals (76.4%) who reported exercising an average of 21 min per week at baseline. This is the first study that we are aware of, that has examined the efficacy of a tailored Internet-based physical activity intervention. This study will have implications for the dissemination of Internet-based physical activity interventions.
超过三分之二的美国人可以访问互联网，因此，互联网可能是接触大量久坐不动人群的重要渠道。本文的目的是描述一项随机对照试验的方法，该试验旨在检验基于互联网的体育活动干预相对于印刷品干预的效果，此前的试验已证明印刷品干预是有效的。具体而言，249名久坐不动的参与者被随机分配接受三种干预措施之一：1）基于互联网的动机性个性化反馈（定制互联网）；2）基于印刷品的动机性个性化反馈（定制印刷品）；或3）目前向公众开放的体育活动网站（标准互联网）。参与者在基线、6个月和12个月时完成了7天体育活动回忆访谈，佩戴了客观的体育活动监测器（即ActiGraph），并参加了跑步机健身测试。样本主要由女性（84.2%）和白种人（76.4%）组成，他们在基线时报告平均每周锻炼21分钟。这是我们所知的第一项研究基于互联网的定制体育活动干预效果的研究。这项研究将对基于互联网的体育活动干预的传播产生影响。
