Exercise contagion in a global social network.
Exercise contagion in a global social network.
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DOI：
10.1038/ncomms14753
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发表时间：
2017-04-18
影响因子：
16.6
通讯作者：
Nicolaides C
中科院分区：
文献类型：
--
作者：
Aral S;Nicolaides C
我们利用不同地理区域天气模式的外生变化来识别全球社交网络中锻炼行为的社会传染。我们通过将每日全球天气数据与∼110万人的网络联系和日常锻炼模式相结合来估计这些传染效应，这些人在5年内在全球社交网络中跑了超过3.5亿 公里。在这里，我们展示了锻炼是社会传染性的，它的传染性随朋友之间的相对活动和性别关系而变化。不太活跃的跑步者会影响更活跃的跑步者，但反之亦然。男人和女人都影响男人，而只有女人影响其他女人。社会传染的嵌入性和结构多样性理论解释了我们观察到的影响效应，而复杂传染理论不能解释我们观察到的影响效应。这些结果表明，考虑到社会传染的干预措施将更有效地传播行为变化。一些人认为，肥胖等与健康相关的行为具有传染性，但健康传染的经验证据仍然没有定论。在这里，通过在全球跑步者网络中进行的大规模准实验，Aral和Nicolades证明了这种类型的传染存在于健身行为中。
We leveraged exogenous variation in weather patterns across geographies to identify social contagion in exercise behaviours across a global social network. We estimated these contagion effects by combining daily global weather data, which creates exogenous variation in running among friends, with data on the network ties and daily exercise patterns of ∼1.1M individuals who ran over 350M km in a global social network over 5 years. Here we show that exercise is socially contagious and that its contagiousness varies with the relative activity of and gender relationships between friends. Less active runners influence more active runners, but not the reverse. Both men and women influence men, while only women influence other women. While the Embeddedness and Structural Diversity theories of social contagion explain the influence effects we observe, the Complex Contagion theory does not. These results suggest interventions that account for social contagion will spread behaviour change more effectively. Some argue that health-related behaviours, such as obesity, are contagious, but empirical evidence of health contagion remains inconclusive. Here, using a large scale quasi-experiment in a global network of runners, Aral and Nicolaides show that this type of contagion exists in fitness behaviours.