中国儿童青少年体力活动现状的Meta分析

系统评价近10年内应用加速度计客观测量的中国儿童青少年中高强度体力活动(moderate-to-vigorous physical activity,MVPA)水平及静态行为(sedentary behavior,SB),为中国儿童青少年体力活动干预及公共卫生决策提供可靠的基线数据.方法 通过Web of Science、SPORTDiscus、中国知网数据库检索2009年1月1日至2019年2月28日中国儿童青少年体力活动及静态行为相关的文献.依据基于PICOS原则制定的文献纳入和排除标准严格筛选文献.采用基于STROBE声明修订的文献质量评价表对文献质量进行评价.提取MVPA、SB时间等数据资料并应用CMA V2软件进行Meta分析.结果 共16篇文献(2012-2019年)进入Meta分析,样本量范围为96~2 163.Meta分析结果表明,中国儿童青少年日均MVPA时间为37.66 min/d,SB时间为539.61 min/d;男生MVPA高于女生(P<0.01);上学日的MVPA、SB均高于周末(P值均<0.05).结论 中国儿童青少年中高强度体力活动不足,静态行为较多;女孩中高强度体力活动尤其不足,上学日的中高强度体力活动时间及静态行为时间均高于周末日.

A Meta-analysis of physical activity among Chinese children and adolescents with accelerometer data

Objective To provide baseline data for the development of physical activity and health promotion strategies and public health policy among Chinese children and adolescents by systematically evaluating accelerometer-measured moderate-to-vigorous physical activity( MVPA) and sedentary behavior( SB). Methods The study search was carried out using China National Knowledge Infrastructure, SPORTDiscus with Full Text, and Web of Science, including studies that published from January 1,2009 to February 28, 2019. The studies were selected by inclusion( based on PICOS principles) and exclusion criteria, and were assessed through quality assessment items based on revised STROBE statement. The information about MVPA and SB were extracted, and Comprehensive Meta-analysis Software( CMA V2) was used to pool the findings from the included studies into a Meta-analysis. Results Sixteen studies published from 2012 to 2019 were included the Meta-analysis. Sample sizes of eligible studies ranged from 96 to 2 163 participants. Meta-analysis found that Chinese children and adolescents separately spent 37.66 min/day,539.61 min/d in MVPA and SB. Boys were more likely to have higher level of MVPA in minutes compared to the girls’ ( P<0.01).Children and adolescents spent more time in MVPA on weekdays than weekends( P< 0.05), and also spent more SB on weekdays than weekends( P<0.05). Conclusion Chinese children and adolescents are physically inactive and live a sedentary lifestyle in general, especially among girls. MVPA and SB time among children and adolescents spent on weekdays are higher than weekends.