Department of Health, Kinesiology, and Recreation, University of Utah, 250 South 1850 East, Salt Lake City, UT 84112, USA.
School of Community Health Sciences, University of Nevada Reno, 1664 North Virginia Street, Reno, NV 89557, USA.
Prev Med. 2017 Oct;103:84-90. doi: 10.1016/j.ypmed.2017.08.011. Epub 2017 Aug 16.
The purpose of this meta-analysis was to examine the effectiveness of school-based physical activity interventions on increasing students' physical activity enjoyment. An internet search with several databases using the keywords "Adolescents", "Children", "Enjoyment", "Physical Activity", and "Schools" was performed yielding over 200 published studies. Studies were eliminated based on the lack of experimental manipulation (i.e., non-intervention studies), no assessment of physical activity enjoyment as an outcome variable, a lack of a control or comparison group, and no reporting of the effect estimate's variability (i.e., standard deviation, standard error, etc.). This procedure resulted in 10 studies being examined in the meta-analysis. Data were analyzed in the state of Utah, USA in 2017. The Hartung-Knapp-Sidak-Jonkman method for a random effects meta-analysis was employed with studies being weighted by inverse variance. The pooled Standardized Mean Difference=0.38 (95% C.I. [0.10-0.65], p=0.011). Cochran's Q test showed statistical significance (p<0.001) and the I=76.6%, suggesting large heterogeneity across the 10 studies. Egger's regression model yielded an intercept coefficient that was statistically significant (bias=3.28, 95% C.I. [0.21-6.36], p=0.039), indicating the presence of small-study effects. This meta-analysis provides evidence that school-based physical activity interventions can be effective in increasing physical activity enjoyment in children and adolescents. However, the magnitude of the pooled effect was small-to-moderate and there was evidence for publication bias and large between-study heterogeneity.
本荟萃分析的目的是检验基于学校的身体活动干预对增加学生身体活动享受的有效性。通过在多个数据库中使用“青少年”、“儿童”、“享受”、“身体活动”和“学校”等关键词进行互联网搜索，共获得了 200 多项已发表的研究。根据缺乏实验操作（即非干预研究）、未将身体活动享受评估为结果变量、缺乏对照组或比较组以及未报告效应估计值的变异性（即标准差、标准误差等），淘汰了这些研究。这一程序导致有 10 项研究被纳入荟萃分析。数据于 2017 年在美国犹他州进行分析。采用随机效应荟萃分析的 Hartung-Knapp-Sidak-Jonkman 方法，根据倒数方差对研究进行加权。汇总的标准化均数差=0.38（95%置信区间[0.10-0.65]，p=0.011）。Cochran's Q 检验显示具有统计学意义（p<0.001），I=76.6%，表明这 10 项研究之间存在很大的异质性。Egger 回归模型得出的截距系数具有统计学意义（偏差=3.28，95%置信区间[0.21-6.36]，p=0.039），表明存在小样本效应。本荟萃分析提供了证据表明，基于学校的身体活动干预可以有效提高儿童和青少年的身体活动享受。然而，汇总效应的幅度较小，存在发表偏倚和研究间异质性较大的证据。
