体育锻炼对我国学生视力健康影响的Meta分析

目的系统评价体育锻炼对我国学生视力健康的影响。方法计算机检索CNKI、WanFang Data、VIP、Web of Science、EBSCO、PubMed、The Cochrane Library数据库搜集体育锻炼对学生视力影响的相关研究,检索时限均从建库至2019年9月。由2名研究员独立筛选文献、提取资料并评价纳入研究的偏倚风险。采用RevMan 5.3软件与Stata 13.0软件进行Meta分析。结果共纳入8个研究,包括试验组681例,对照组679例。Meta分析结果显示,体育锻炼对改善学生视力有益[SMD=1.02,95%CI(0.90,1.13),P<0.000 01]。亚组分析结果显示:体育锻炼在小学生群体中[SMD=1.361,95%CI(0.873,1.850),P<0.000 01]、长周期(>24周)[SMD=1.502,95%CI(0.984,2.019),P<0.000 01]、中频率(3次/周)[SMD=1.631,95%CI(1.022,2.240),P<0.000 01]、短时间(<90 min)[SMD=1.410,95%CI(0.758,2.062),P<0.000 01]改善视力更佳。结论本研究发现体育锻炼对于改善视力具有良好的效果。受纳入研究数量和质量限制,上述结论尚需更多高质量的研究予以验证。

Effects of physical exercises on the vision of students in China: a meta-analysis

Objectives To evaluate the effects of physical exercises on the vision of students in China.Methods Trials of the effects of physical exercises on students’ vision were retrieved in databases of CNKI, WanFang Data, VIP, Web of Science, EBSCO, PubMed and The Cochrane Library from inception to September 2019. Two reviewers independently screened literature, extracted data and assessed risk of bias of included studies. Meta-analysis was carried out with RevMan 5.3 and Stata 13.0 software. Results A total of 8 studies including 681 students in the experimental group and 679 in the control group were included. The results of meta-analysis showed that physical exercises were beneficial to improving students’ vision(SMD=1.02, 95%CI 0.90 to 1.13, P<0.000 01). The results of subgroup analysis showed that physical exercises in the elementary school students group(SMD=1.361, 95%CI 0.873 to 1.850, P<0.000 01),long period(>24 weeks)(SMD=1.502, 95%CI 0.984 to 2.019, P<0.000 01), medium frequency(3 times/week)(SMD=1.631,95%CI 1.022 to 2.240, P<0.000 01), and short time(<90 min)(SMD=1.410, 95%CI 0.758 to 2.062, P<0.000 01) had superior results. Conclusions Physical exercises have beneficial effects on improving vision. Limited by quantity and quality of subjects, the above conclusions requires verification by more high-quality studies.