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本文引用的文献

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Friendship networks and physical activity and sedentary behavior among youth: a systematized review.友谊网络与青少年的体力活动和久坐行为：系统综述。
Int J Behav Nutr Phys Act. 2013 Dec 1;10:130. doi: 10.1186/1479-5868-10-130.
2
Adolescent Friendships, BMI, and Physical Activity: Untangling Selection and Influence Through Longitudinal Social Network Analysis.青少年友谊、体重指数与身体活动：通过纵向社会网络分析理清选择与影响因素
J Res Adolesc. 2013 Sep 1;23(3). doi: 10.1111/j.1532-7795.2012.00836.x.
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The effects of the school environment on student health: a systematic review of multi-level studies.学校环境对学生健康的影响：一项多层次研究的系统评价。
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The association between accelerometer-measured patterns of sedentary time and health risk in children and youth: results from the Canadian Health Measures Survey.计步器测量的久坐时间模式与儿童和青少年健康风险之间的关联：来自加拿大健康测量调查的结果。
BMC Public Health. 2013 Mar 7;13:200. doi: 10.1186/1471-2458-13-200.
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School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18.以学校为基础的体育活动项目，旨在促进6至18岁儿童和青少年的体育活动及健康。
Cochrane Database Syst Rev. 2013 Feb 28;2013(2):CD007651. doi: 10.1002/14651858.CD007651.pub2.
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Adolescent sedentary behaviors: correlates differ for television viewing and computer use.青少年久坐行为：看电视和使用电脑的相关因素不同。
J Adolesc Health. 2013 Jan;52(1):70-6. doi: 10.1016/j.jadohealth.2012.05.001. Epub 2012 Jun 23.
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Physical activity and screen time in adolescents and their friends.青少年及其朋友的身体活动和屏幕时间。
Am J Prev Med. 2013 Jan;44(1):48-55. doi: 10.1016/j.amepre.2012.09.054.
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Social network analysis of childhood and youth physical activity: a systematic review.社交网络分析在儿童和青少年身体活动中的应用：系统综述。
Am J Prev Med. 2012 Dec;43(6):636-42. doi: 10.1016/j.amepre.2012.08.021.
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An actor-based model of social network influence on adolescent body size, screen time, and playing sports.基于演员的社会网络对青少年体型、屏幕时间和运动影响的模型。
PLoS One. 2012;7(6):e39795. doi: 10.1371/journal.pone.0039795. Epub 2012 Jun 29.
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The distribution of physical activity in an after-school friendship network.课余友谊网络中身体活动的分布。
Pediatrics. 2012 Jun;129(6):1064-71. doi: 10.1542/peds.2011-2567. Epub 2012 May 28.

青少年友谊网络、身体活动和久坐行为之间的关联。

Associations between aspects of friendship networks, physical activity, and sedentary behaviour among adolescents.

作者信息

Sawka Keri Jo, McCormack Gavin R, Nettel-Aguirre Alberto, Blackstaffe Anita, Perry Rosemary, Hawe Penelope

机构信息

University of Calgary, Teaching Research and Wellness Building, 3rd Floor, 3280 Hospital, Drive NW, AB, Canada T2N 4Z6.

Alberta Children's Hospital, Room C4-435, 2888 Shaganappi, Trail NW, Calgary, AB, Canada T3B 6A8.

出版信息

J Obes. 2014;2014:632689. doi: 10.1155/2014/632689. Epub 2014 Sep 24.

DOI:10.1155/2014/632689
PMID:25328690
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4190696/
Abstract

BACKGROUND

Adolescent friendships have been linked to physical activity levels; however, network characteristics have not been broadly examined.

METHOD

In a cross-sectional analysis of 1061 adolescents (11-15 years), achieving 60 minutes/day of moderate-to-vigorous physical activity (MVPA) and participating in over 2 hours/day of sedentary behaviour were determined based on friendship network characteristics (density; proportion of active/sedentary friends; betweenness centrality; popularity; clique membership) and perceived social support.

RESULTS

Adolescents with no friendship nominations participated in less MVPA. For boys and girls, a ten percent point increase in active friends was positively associated with achievement of 60 minutes/day of MVPA (OR 1.11; 95% CI 1.02-1.21, OR 1.14; 95% CI 1.02-1.27, resp.). For boys, higher social support from friends was negatively associated with achieving 60 minutes/day of MVPA (OR 0.63; 95% CI 0.42-0.96). Compared with low density networks, boys in higher density networks were more likely to participate in over 2 hours/day of sedentary behaviour (OR 2.93; 95% CI 1.32-6.49). Social support from friends also modified associations between network characteristics and MVPA and sedentary behaviour.

CONCLUSION

Different network characteristics appeared to have different consequences. The proportion of active close friends was associated with MVPA, while network density was associated with sedentary behaviour. This poses challenges for intervention design.

摘要

背景

青少年友谊与身体活动水平有关联；然而，社交网络特征尚未得到广泛研究。

方法

在对1061名青少年（11至15岁）的横断面分析中，根据友谊网络特征（密度；活跃/久坐朋友的比例；中介中心性；受欢迎程度；小团体成员身份）和感知到的社会支持，确定是否达到每天60分钟的中等至剧烈身体活动（MVPA）以及是否每天参与超过2小时的久坐行为。

结果

未被提名有朋友的青少年参与的MVPA较少。对于男孩和女孩，活跃朋友比例每增加10个百分点，与达到每天60分钟的MVPA呈正相关（分别为OR 1.11；95%CI 1.02 - 1.21，OR 1.14；95%CI 1.02 - 1.27）。对于男孩，来自朋友的较高社会支持与达到每天60分钟的MVPA呈负相关（OR 0.63；95%CI 0.42 - 0.96）。与低密度网络相比，高密度网络中的男孩更有可能每天参与超过2小时的久坐行为（OR 2.93；95%CI 1.32 - 6.49）。来自朋友的社会支持也改变了网络特征与MVPA和久坐行为之间的关联。

结论

不同的网络特征似乎有不同的影响。活跃亲密朋友的比例与MVPA有关，而网络密度与久坐行为有关。这给干预设计带来了挑战。