双重任务与单一任务训练对老年人步态和平衡改善效果的Meta分析

目的 比较双重任务训练与单一任务训练对健康老年人步态和平衡的改善效果。方法 计算机检索Cochrane Library、Medline、EMBASE、Web of Science、PubMed、Ovid、CINAHL（EBSCO）及中国知网数据库中有关双重任务训练与单一任务训练对健康老年人步态、平衡改善效果的研究。采用RevMan 5.3软件进行Meta分析。结果 最终纳入18篇文献,研究对象775例。Meta分析结果显示,双重任务训练对老年人步速和步长的改善效果优于单一任务训练（P<0.05）,2种训练方式对老年人平衡的改善效果差异无统计学意义（P>0.05）。结论 双重任务训练比单一任务训练能更好地改善老年人的步速和步长,降低其跌倒风险,对平衡功能的改善效果是否有优势有待进一步探讨。

A meta-analysis of the effects of dual-task and single-task training on improvement of gait and balance in the elderly

Objective To compare the effects of dual-task training and single-task training on gait and balance performance in healthy older adults.Methods Electronic databases including Cochrane Library,Medline,EMBASE,Web of Science,PubMed,Ovid,CINAHL（EBSCO） and China National Knowledge Internet were searched. Randomized controlled trails that assess the effects of dual-task training and single-task training in healthy older adults were included. Meta-analysis was conducted using Revman 5.3.Results Totally 18 studies with a population of 775 were reviewed and pooled for meta-analysis. Dual-task training was superior to single-task training in improving gait speed and step length（P<0.05）,the effects of dual-task training and single-task training were equal in the improvement of balance performance（P>0.05）.Conclusion Compared with the traditional single-task training,the dual-task training can better improve the gait speed and step length of the elderly. The effects of dual-task training on the balance performance needs further discussion.