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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Screen-based behaviors in Australian adolescents: Longitudinal trends from a 4-year follow-up study
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Screen-based behaviors in Australian adolescents: Longitudinal trends from a 4-year follow-up study

机译：澳大利亚青少年的屏幕行为：4年后续研究的纵向趋势

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摘要

The longitudinal trends of screen time, a highly prevalent behavior in adolescents, are relatively unknown. This study examined longitudinal trends in screen time among a large sample of Australian primary school-aged children transitioning into secondary school-aged adolescence. Data were derived from the Longitudinal Study of Australian Children (LSAC). In 2010, 2179 children (49.7% boys; 10.3 +/- 1.1 years) completed a time-use diary, recording their main activities during waking hours. This was repeated with the same sample in 2012 (12.4 +/- 0.5 years) and 2014 (14.4 +/- 0.5 years). Data were analyzed for time spent in TV viewing, computer use, electronic gaming, and social networking and online communication. Repeated-measures MANCOVA tests were performed to analyze trends in screen time. Trends were also analyzed by sex. Total screen time significantly increased (+ 85.9 min/day) over four years (eta(2)(p)= 0.010, P <.001), but differed by sex, with a larger increase in boys (boys: + 41.6, girls: + 22.7 min/day). Electronic gaming increased in boys (+ 43.2 min/day) and decreased in girls (-16.8 min/day). In contrast, girls reported larger increases in TV viewing (boys: + 0.4, girls: + 29.1 min/day), computer use (boys: + 24.8, girls: + 34.3 min/day) and time communicating online and social networking (boys: + 4.3, girls: + 15.2 min/day). To conclude, screen time among adolescents increases between the ages of 10 and 14 years, but differs by sex and screen time domain. Future screen time reduction interventions may choose to focus on recreational computer use and electronic gaming in boys and TV viewing and time spent communicating online and social networking for girls.
机译：屏幕时间是青少年中一种非常普遍的行为，其纵向趋势相对未知。这项研究调查了澳大利亚小学适龄儿童过渡到中学适龄青少年的大样本中屏幕时间的纵向趋势。数据来自澳大利亚儿童纵向研究（LSAC）。2010年，2179名儿童（49.7%为男孩；10.3+/-1.1岁）完成了时间使用日记，记录了他们醒着时的主要活动。在2012年（12.4+/-0.5年）和2014年（14.4+/-0.5年）对同一样本进行了重复。数据被分析为看电视、使用电脑、电子游戏、社交网络和在线交流所花费的时间。重复测量MANCOVA试验，以分析筛查时间的趋势。趋势也按性别进行了分析。四年来，总屏幕时间显著增加（+85.9分钟/天）（eta（2）（p）=0.010，p<0.001），但性别不同，男孩的增加幅度更大（男孩：+41.6，女孩：+22.7分钟/天）。电子游戏在男孩中增加（+43.2分钟/天），在女孩中减少（-16.8分钟/天）。相比之下，女孩在看电视（男孩：+0.4，女孩：+29.1分钟/天）、使用电脑（男孩：+24.8，女孩：+34.3分钟/天）和在线交流和社交网络时间（男孩：+4.3，女孩：+15.2分钟/天）方面的增长更大。总之，青少年的屏幕时间在10岁至14岁之间增加，但因性别和屏幕时间域而异。未来减少屏幕时间的干预措施可能会选择将重点放在男孩娱乐性的电脑使用和电子游戏、看电视以及女孩在线和社交网络交流上。

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