衰老过程中注意力与步态的关系：事实与谬误
The relationship between attention and gait in aging: facts and fallacies.
作者信息
Holtzer Roee, Wang Cuiling, Verghese Joe
机构信息
Neurology and Ferkauf, Albert Einstein School of Medicine, Yeshiva University, Bronx, NY, USA.
出版信息
Motor Control. 2012 Jan;16(1):64-80. doi: 10.1123/mcj.16.1.64.
The current study critically assessed the relationship between cognitive functions and gait in nondemented older adults. Quantitative measures of gait (velocity, cadence, and a coefficient of variance in stride length) were assessed in single and dual-task conditions. Three cognitive factors captured the domains of Executive Attention, Verbal IQ, and Memory. Linear regressions showed that Executive Attention was related to velocity in both walking conditions. However, Memory and Verbal IQ were also related to velocity. Memory was related to Cadence in both walking conditions. Executive Attention was related to the coefficient of variance in stride length in both walking conditions. Linear mixed effects models showed that dual-task costs were largest in velocity followed by cadence and the coefficient of variance in stride length. The relationship between cognitive functions and gait depends, in part, on the analytic approach used, gait parameters assessed, and walking condition.
当前研究批判性地评估了非痴呆老年人认知功能与步态之间的关系。在单任务和双任务条件下评估了步态的定量指标（速度、步频和步长变异系数）。三个认知因素涵盖了执行注意力、言语智商和记忆领域。线性回归表明，在两种行走条件下，执行注意力均与速度相关。然而，记忆和言语智商也与速度相关。在两种行走条件下，记忆均与步频相关。在两种行走条件下，执行注意力均与步长变异系数相关。线性混合效应模型表明，双任务成本在速度方面最大，其次是步频和步长变异系数。认知功能与步态之间的关系部分取决于所使用的分析方法、评估的步态参数和行走条件。
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