Efficacy and causal mechanism of an online social media intervention to increase physical activity: Results of a randomized controlled trial.
Efficacy and causal mechanism of an online social media intervention to increase physical activity: Results of a randomized controlled trial.
复制标题
DOI：
10.1016/j.pmedr.2015.08.005
复制
发表时间：
2015
影响因子：
2.8
通讯作者：
Centola D
中科院分区：
文献类型：
--
作者：
Zhang J;Brackbill D;Yang S;Centola D
目的：确定社交媒体的哪些功能-促销信息或同伴网络-可以增加身体活动。方法：在宾夕法尼亚州费城的一所大型东北大学进行了为期13周的基于社交媒体的锻炼计划。在一项随机对照试验中，来自该大学的217名研究生被随机分为三组：控制条件，具有用于注册由大学的指导员领导的每周锻炼课程13周的基本在线程序，媒体条件，其用鼓励身体活动的每周在线宣传媒体消息补充基本程序，以及一种社会条件，即用由该计划的其他参与者组成的四到六个匿名同龄人的在线网络代替媒体内容，其中每个参与者都能够看到他们的同龄人在注册课程方面的进展。主要结果是参加运动班的人数，次要结果是自我报告的身体活动。数据是在2014年收集的。结果：参与者平均注册5.5个班级。与对照组相比（平均值= 4.5），促销信息适度增加了招募（平均值= 5.7，p = 0.08），而匿名社交网络显著增加了招募（平均值= 6.3，p = 0.02）。到项目结束时，与基线相比，社交条件下的参与者每周适度锻炼1.6天，这明显多于对照条件下的0.8天。结论：匿名在线同伴的社会影响比促销信息更能成功地改善身体活动。临床试验注册：ClinicalTrials.gov：NCT 02267369。我们进行了为期13周的基于社交媒体的锻炼计划。我们研究了促销信息和社会影响的因果关系。促销信息适度增加健身班的注册人数。匿名社交网络显著增加了健身班的注册人数。社会影响对于提高身体活动更有效。
Objective: To identify what features of social media – promotional messaging or peer networks – can increase physical activity. Method: A 13-week social media-based exercise program was conducted at a large Northeastern university in Philadelphia, PA. In a randomized controlled trial, 217 graduate students from the University were randomized to three conditions: a control condition with a basic online program for enrolling in weekly exercise classes led by instructors of the University for 13 weeks, a media condition that supplemented the basic program with weekly online promotional media messages that encourage physical activity, and a social condition that replaced the media content with an online network of four to six anonymous peers composed of other participants of the program, in which each participant was able to see their peers' progress in enrolling in classes. The primary outcome was the number of enrollments in exercise classes, and the secondary outcomes were self-reported physical activities. Data were collected in 2014. Results: Participants enrolled in 5.5 classes on average. Compared with enrollment in the control condition (mean = 4.5), promotional messages moderately increased enrollment (mean = 5.7, p = 0.08), while anonymous social networks significantly increased enrollment (mean = 6.3, p = 0.02). By the end of the program, participants in the social condition reported exercising moderately for an additional 1.6 days each week compared with the baseline, which was significantly more than an additional 0.8 days in the control condition. Conclusion: Social influence from anonymous online peers was more successful than promotional messages for improving physical activity. Clinical Trial Registration: ClinicalTrials.gov: NCT02267369. We conduct a 13-week social media-based exercise program. We examine the causal effects of promotional messaging and social influence. Promotional messages moderately increase enrollment in exercise classes. Anonymous social networks significantly increase enrollment in exercise classes. Social influence is more successful for improving physical activity.