Motor Behavior Laboratory, University of Florida, Gainesville, Florida, USA.
Laboratory for Rehabilitation Neuroscience, University of Florida, Gainesville, Florida, USA; Division of Sport Science, Incheon National University, Incheon, South Korea.
Exp Gerontol. 2017 Nov;98:199-206. doi: 10.1016/j.exger.2017.09.001. Epub 2017 Sep 7.
With increasing age motor functions decline. The additional challenges of executing bimanual movements further hinder motor functions in older adults. The current systematic review and meta-analysis determined the effects of healthy aging on performance in bimanual movements as compared to younger adults.
Our comprehensive search identified 27 studies that reported bimanual movement performance measures. Each study included a between groups comparison of older (mean age=68.79years) and younger adults (mean age=23.14years). The 27 qualified studies generated 40 total outcome measure comparisons: (a) accuracy: 18, (b) variability: 14, and (c) movement time: eight.
Our meta-analysis conducted on a random effects model identified a relatively large negative standardized mean difference effect (ES=-0.93). This indicates that older adults exhibited more impaired bimanual movement performance in comparison to younger adults in our group of studies. Specifically, a moderator variable analysis revealed large negative effects in both accuracy (ES=-0.94) and variability (ES=-1.00), as well as a moderate negative effect (ES=-0.71) for movement time. These findings indicate that older adults displayed reduced accuracy, greater variability, and longer execution time when executing bimanual movements.
These meta-analytic findings revealed that aging impairs bimanual movement performance.
随着年龄的增长，运动功能会下降。老年人执行双手运动的额外挑战进一步阻碍了他们的运动功能。本系统评价和荟萃分析旨在确定健康老龄化对双手运动表现的影响，以与年轻人进行比较。
我们全面的搜索确定了 27 项报告双手运动表现测量的研究。每项研究都包括了老年人（平均年龄=68.79 岁）和年轻人（平均年龄=23.14 岁）之间的组间比较。这 27 项合格研究共产生了 40 项总结果测量比较：（a）准确性：18 项，（b）可变性：14 项，（c）运动时间：8 项。
我们基于随机效应模型进行的荟萃分析确定了一个相对较大的负标准化均数差效应（ES=-0.93）。这表明，与我们研究组中的年轻人相比，老年人在双手运动表现上表现出更多的受损。具体来说，一个调节变量分析显示，在准确性（ES=-0.94）和可变性（ES=-1.00）方面都有较大的负效应，以及在运动时间方面有中等程度的负效应（ES=-0.71）。这些发现表明，老年人在执行双手运动时表现出准确性降低、变异性增加和执行时间延长。
这些荟萃分析结果表明，衰老会损害双手运动表现。
