早期客观测量的久坐行为流行率：系统评价和荟萃分析。
Prevalence of objectively measured sedentary behavior in early years: Systematic review and meta-analysis.
机构信息
Early Start, Faculty of Social Sciences, University of Wollongong, Wollongong, NSW, Australia.
Research Unit for Sport and Physical Activity - CIDAF (uid/dtp/03213/2016) University of Coimbra, Coimbra, Portugal.
出版信息
Scand J Med Sci Sports. 2019 Mar;29(3):308-328. doi: 10.1111/sms.13339. Epub 2018 Dec 18.
BACKGROUND
The early years have been identified as a critical period during which sedentary habits may be established, as this behavior appears to track throughout life.
OBJECTIVE
The purpose of this systematic review and meta-analysis is to summarize the current literature on the prevalence of sedentary behavior in children aged 1-5.99 years, reporting differences between boys and girls, weekdays and weekend days, childcare hours and nonchildcare hours, and between time spent indoors and outdoors while children attended childcare.
METHODS
Five databases were searched until 26.10.2017 and meta-analyses were conducted to estimate prevalence and calculate mean differences in prevalence between groups.
RESULTS
Fifty studies representing 14 598 children (2-5.99 years) were included. Children spent 51.4% of their waking time in sedentary behaviors. Boys spent less time being sedentary than girls (estimate difference = -1.4%; 95%CI = -2.0: -0.7; P < .001). No significant differences were found between weekdays/weekend days (estimate difference = -0.4; 95%CI = -2.0: 1.2; P = .61) nor between childcare hours/nonchildcare hours (estimate difference = %; 95%CI = -0.9: 6.6; P = .136). While attending childcare centers, children were more sedentary indoors than outdoors (estimate difference = 14.4%; 95%CI = 11.8: 16.9; P < .001).
CONCLUSIONS
Our results suggest that young children spend a significant portion of their waking hours in sedentary behaviors. While at childcare, young children accumulated more sedentary behavior indoors than outdoors. Girls were more likely to be more sedentary than boys. No significant differences were found between weekdays and weekends, or between childcare and nonchildcare hours. There is a need for higher-quality studies with strong designs, using age and device appropriate cut-off points, to improve evidence-base and to better establish prevalence of sedentary behavior in young children.
背景
儿童早期被确定为一个关键时期，在此期间可能会养成久坐的习惯，因为这种行为似乎会伴随一生。
目的
本系统评价和荟萃分析的目的是总结目前关于 1-5.99 岁儿童久坐行为流行率的文献，报告男孩和女孩、工作日和周末、儿童保育时间和非儿童保育时间以及儿童在儿童保育期间在室内和室外花费的时间之间的差异。
方法
检索了 5 个数据库，直到 2017 年 10 月 26 日，并进行荟萃分析以估计流行率，并计算组间流行率的平均值差异。
结果
共有 50 项研究代表了 14598 名儿童（2-5.99 岁），其中 51.4%的清醒时间用于久坐行为。男孩比女孩花更少的时间久坐（估计差异=-1.4%；95%CI=-2.0：-0.7；P<.001）。工作日/周末（估计差异=-0.4；95%CI=-2.0：1.2；P=0.61）和儿童保育时间/非儿童保育时间（估计差异=0%；95%CI=-0.9：6.6；P=0.136）之间无显著差异。在参加儿童保育中心时，儿童在室内比在室外更久坐（估计差异=14.4%；95%CI=11.8：16.9；P<.001）。
结论
我们的研究结果表明，幼儿在清醒时间中有很大一部分时间处于久坐行为中。在儿童保育中心时，幼儿在室内比在室外积累了更多的久坐行为。女孩比男孩更有可能久坐不动。工作日和周末之间或儿童保育和非儿童保育时间之间没有显著差异。需要高质量的研究，采用设计严密、使用年龄和设备适当的切点，以提高证据基础，并更好地确定幼儿久坐行为的流行率。
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