Click "like" to change your behavior: a mixed methods study of college students' exposure to and engagement with Facebook content designed for weight loss.
Click "like" to change your behavior: a mixed methods study of college students' exposure to and engagement with Facebook content designed for weight loss.
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DOI：
10.2196/jmir.3267
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发表时间：
2014-06-24
影响因子：
7.4
通讯作者：
Marshall S
中科院分区：
文献类型：
--
作者：
Merchant G;Weibel N;Patrick K;Fowler JH;Norman GJ;Gupta A;Servetas C;Calfas K;Raste K;Pina L;Donohue M;Griswold WG;Marshall S
超重或肥胖在大学生中很普遍，许多人在这段时间里体重增加。传统的面对面减肥干预在这一人群中效果不佳。Facebook是为大学生提供减肥干预措施的一个有吸引力的工具，因为它很受欢迎，有潜力提供成功的减肥干预措施中的策略，并且能够支持干预内容的持续调整。这项研究的目的是描述参与者在减肥随机对照试验(N=404)中对Facebook页面的暴露情况，该页面旨在向超重/肥胖的大学生提供内容，并检查参与者对通过Facebook发布的减肥行为改变运动的参与度。干预活动模型的基础是5种自我调节技术：意图形成、行动计划、反馈、目标回顾和自我监控。参与者被鼓励利用他们现有的社交网络来实现他们的减肥目标。一名健康教练根据使用模式和用户反馈对页面进行了审核并修改了内容。量化分析是在Facebook的帖子和参与者层面上进行的。参与者的参与度通过Facebook帖子类型(例如，状态更新)和互动(例如，喜欢)进行量化，并根据减肥活动(顺序与非顺序)进行分层。一部分参与者接受了采访，以评估被动在线参与或“潜伏”的存在。这位健康教练在21个月的时间里在研究的Facebook页面上发布了1816条独特的消息，平均每天发布3.45条消息(SD 1.96，范围1-13)。总体而言，72.96%(第1325/1816)的帖子至少有一次互动(如点赞)。在这些帖子中，大约24.75%(328/第1325)有1-2次互动，23.39%(310/第1325)有3-5次互动，25.13%(333/第1325)有6-8次互动，41个帖子有20次或更多互动(3.09%，41/第1325)。可量化(即可见)的参与度之间存在显著差异。在最终干预样本的199名参与者中，32名(16.1%)是高度活跃的用户，62名(31.2%)从未在Facebook上明显参与过干预。投票是最受欢迎的帖子类型，其次是照片，97.5%(79/81)和80.3%(386/481)的人至少有一次互动。随着时间的推移，参与者对帖子的参与度明显减少(部分r=-.33；P<；.001)。约40%的受访者(12/29，41%)报告说，他们通过阅读Facebook帖子而不是明显地与之互动，从而被动地参与其中。在健康教练的帮助下，Facebook可以被用来远程向大学生提供减肥干预内容，健康教练可以反复定制内容并与参与者互动。然而，这项研究的Facebook页面的可见参与度变化很大，随着时间的推移，参与度会下降。观察到的参与程度是否在影响体重行为和结果的变化方面有意义，将在整体研究完成时进行评估。
Overweight or obesity is prevalent among college students and many gain weight during this time. Traditional face-to-face weight loss interventions have not worked well in this population. Facebook is an attractive tool for delivering weight loss interventions for college students because of its popularity, potential to deliver strategies found in successful weight loss interventions, and ability to support ongoing adaptation of intervention content. The objective of this study was to describe participant exposure to a Facebook page designed to deliver content to overweight/obese college students in a weight loss randomized controlled trial (N=404) and examine participant engagement with behavior change campaigns for weight loss delivered via Facebook. The basis of the intervention campaign model were 5 self-regulatory techniques: intention formation, action planning, feedback, goal review, and self-monitoring. Participants were encouraged to engage their existing social network to meet their weight loss goals. A health coach moderated the page and modified content based on usage patterns and user feedback. Quantitative analyses were conducted at the Facebook post- and participant-level of analysis. Participant engagement was quantified by Facebook post type (eg, status update) and interaction (eg, like) and stratified by weight loss campaign (sequenced vs nonsequenced). A subset of participants were interviewed to evaluate the presence of passive online engagement or “lurking.” The health coach posted 1816 unique messages to the study’s Facebook page over 21 months, averaging 3.45 posts per day (SD 1.96, range 1-13). In all, 72.96% (1325/1816) of the posts were interacted with at least once (eg, liked). Of these, approximately 24.75% (328/1325) had 1-2 interactions, 23.39% (310/1325) had 3-5 interactions, 25.13% (333/1325) had 6-8 interactions, and 41 posts had 20 or more interactions (3.09%, 41/1325). There was significant variability among quantifiable (ie, visible) engagement. Of 199 participants in the final intervention sample, 32 (16.1%) were highly active users and 62 (31.2%) never visibly engaged with the intervention on Facebook. Polls were the most popular type of post followed by photos, with 97.5% (79/81) and 80.3% (386/481) interacted with at least once. Participants visibly engaged less with posts over time (partial r=–.33; P<.001). Approximately 40% of the participants interviewed (12/29, 41%) reported passively engaging with the Facebook posts by reading but not visibly interacting with them. Facebook can be used to remotely deliver weight loss intervention content to college students with the help of a health coach who can iteratively tailor content and interact with participants. However, visible engagement with the study’s Facebook page was highly variable and declined over time. Whether the level of observed engagement is meaningful in terms of influencing changes in weight behaviors and outcomes will be evaluated at the completion of the overall study.