Engineering Online and In-Person Social Networks for Physical Activity: A Randomized Trial.
Engineering Online and In-Person Social Networks for Physical Activity: A Randomized Trial.
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DOI：
10.1007/s12160-016-9814-8
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发表时间：
2016-12
期刊：
影响因子：
--
通讯作者：
Sciamanna CN
中科院分区：
文献类型：
--
作者：
Rovniak LS;Kong L;Hovell MF;Ding D;Sallis JF;Ray CA;Kraschnewski JL;Matthews SA;Kiser E;Chinchilli VM;George DR;Sciamanna CN
社交网络可以影响身体活动，但人们对如何最好地设计在线和面对面的社交网络来增加活动知之甚少。根据活动促进的社交网络模型进行随机试验，以评估不同程序对建立社交网络的增量贡献。将不活动的成年人（n = 308，年龄，50.3（SD = 8.3）岁，38.3%男性，83.4%超重/肥胖）随机分配至3组之一。推广组评估了每周电子邮件提示的效果，强调步行的社交网络互动（例如，鼓励，信息支持）;活动组评估了在每周提示中添加循证在线健身步行干预的增量效应;社交网络组评估了提供在线网络站点的步行访问以及在不同环境中促进步行/活动的额外增量效应。主要结果是在3个月和9个月时从基线评估的加速度计测量的中度至剧烈体力活动（MVPA）的平均变化。在3个月时，参与者的MVPA增加了21.0分钟/周，95% CI [5.9，36.1]，p = 0.005，这种变化在9个月时持续存在，组间无差异。虽然针对社交网络的程序结构在干预组中各不相同，但这些程序对身体活动的功能影响是相似的。未来的研究应该评估更强大的干扰器是否能改善社交网络干预的效果。NCT01142804
Social networks can influence physical activity, but little is known about how best to engineer online and in-person social networks to increase activity. To conduct a randomized trial based on the Social Networks for Activity Promotion model to assess the incremental contributions of different procedures for building social networks on objectively-measured outcomes. Physically inactive adults (n = 308, age, 50.3 (SD = 8.3) years, 38.3% male, 83.4% overweight/obese) were randomized to 1 of 3 groups. The Promotion group evaluated the effects of weekly emailed tips emphasizing social network interactions for walking (e.g., encouragement, informational support); the Activity group evaluated the incremental effect of adding an evidence-based online fitness walking intervention to the weekly tips; and the Social Networks group evaluated the additional incremental effect of providing access to an online networking site for walking, and prompting walking/activity across diverse settings. The primary outcome was mean change in accelerometer-measured moderate-to-vigorous physical activity (MVPA), assessed at 3 and 9 months from baseline. Participants increased their MVPA by 21.0 mins/week, 95% CI [5.9, 36.1], p = .005, at 3 months, and this change was sustained at 9 months, with no between-group differences. Although the structure of procedures for targeting social networks varied across intervention groups, the functional effect of these procedures on physical activity was similar. Future research should evaluate if more powerful reinforcers improve the effects of social network interventions. NCT01142804
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影响因子：
3.7
作者：
King AC;Hekler EB;Grieco LA;Winter SJ;Sheats JL;Buman MP;Banerjee B;Robinson TN;Cirimele J
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