太极拳对老年人单足站立时间影响差异性的Meta分析

A Meta-analysis:Effect of Tai Chi on Single-leg Standing Time of the Elderly

目的：评价太极拳运动对老年人单足站立时间的作用效果,判断其与干预时间的关系。方法：计算机检索Cochrane图书馆、Pub Med、SCI、万方数据库（Wanfang）、中国知网（CNKI）及中文科技期刊数据库（维普）等数据库,纳入符合标准的随机对照实验（RCT）,检索时限均为建库至2016年1月。应用Rev Man 5.3软件进行Meta分析。结果：共纳入6项研究,其中1篇为中文文献,其余5篇均为英文文献。Meta分析结果显示,太极拳练习一定程度上能够增加老年人的单足站立时间,改善静态平衡功能。其对开目单足站立的作用效果优于闭目单足站立,两者的结果分别是[WMD=8.97,95%CI（8.05,9.90）]和[WMD=5.05,95%CI（2.72,7.37）]。同时干预时间不同,干预效果存在差异性,干预3~4个月以及干预6个月和12个月的结果分别为：[WMD=1.74,95%CI（-3.75,7.23）]、[WMD=4.58,95%CI（2.24,6.92）]和[WMD=5.37,95%CI（-0.51,11.24）]。结论 ：规律的太极拳运动一定程度上能够增加老年人的单足站立时间,改善患者的静态平衡功能,干预时间6个月可起到提升作用。

Objective：To evaluate the effect of Tai Chi on one-leg standing time（OLST） of the elderly and analyze the relationships with intervention of different time. Methods：Cochrane Central Register Controlled Trials（CENTRAL）,Pub Med,Wanfang Data,CNKI,VIP databases were searched for the randomized controlled trials（RCTS） of the effect of Tai Chi on OLST of the elderly,from the date of establishment of the databases to January 2016. The extracted data were analyzed by Rev Man 5.3. Results：A total of 6literatures were discovered. There was one Chinese literature,others are English literatures. Meta-analyses showed that Tai Chi intervention can increase OLST. In single-leg stance with the eyes open（SLO）,the effect was better than in single-leg stance with the eyes closed（SLC）, and the result is [WMD=8.97,95%CI（8.05, 9.90）] and [WMD=5.05, 95%CI（2.72, 7.37）] respectively. And intervention of different time had different results. The effect of Tai Chi of 3 to 4 months,6 months and 12 months were as follows：[WMD=1.74,95%CI（-3.75,7.23）], [WMD=4.58,95%CI（2.24,6.92）] and [WMD=5.37,95%CI（-0.51,11.24）]. Conclusion：Tai Chi with varying degrees can increase OLST of the elderly and improve the static balance. And intervention of different time has different effects and at least 6 months Tai Chi exercise can promote its effects.