Walking behaviour of healthy elderly: attention should be paid.
Walking behaviour of healthy elderly: attention should be paid.
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DOI：
10.1186/1744-9081-6-59
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发表时间：
2010-10-12
期刊：
影响因子：
--
通讯作者：
Schmidt A
中科院分区：
文献类型：
--
作者：
de Bruin ED;Schmidt A
以前的研究已经报道了执行功能(EF)和步态测量之间的关联，特别是在老年人中。这项研究考察了65岁及以上社区居住的非痴呆老年人执行功能的特定组成部分与步态的相对双重任务成本(DTC)之间的关系。使用GAITRite®步态系统对62名健康社区老年人进行了时间步态特征(步态时间、步速)和空间步态特征(步长)的测量。使用注意操作测验(TAP)评估特定的执行功能，将注意力、记忆和抑制分开。其他测量包括简易精神状态检查(MMSE)、每日服药量、教育水平和社会人口学特征。建立了调整和未调整的多变量线性回归模型，以评估变量之间的关系。在快速行走时，步幅时间、步速和步长的相对DTC较高与注意力分散有关。步幅时间的相对DTC较高与较佳步行速度下的注意力分散有关。步长的高DTC和记忆力之间的联系不那么牢固，只有在较佳的行走速度下才能观察到。没有一项步态测量与抑制有关。步态的空间和时间双重任务成本特征尤其与老年人的注意力分散有关。结果表明，与DTC相关的执行功能和任务性质不同(优先与快走相比)。有必要进行进一步的研究，以确定分散注意力的改善是否会转化为在选定的复杂行走任务中表现更好。
Previous studies have reported an association between executive function (EF) and measures of gait, particularly among older adults. This study examined the relationship between specific components of executive functions and the relative dual task costs of gait (DTC) in community-dwelling non-demented older adults, aged 65 years and older. Temporal (stride time, stride velocity) and spatial (stride length) gait characteristics were measured using a GAITRite®-System among 62 healthy community dwelling older adults while walking with and without backward counting (BC) at preferred and fast walking speeds. Specific executive functions divided attention, memory and inhibition were assessed using the Test for Attentional Performance (TAP). Other measures included Mini-Mental State Examination (MMSE), amount of daily medications taken, educational level and sociodemographic characteristics. Adjusted and unadjusted multivariable linear regression models were developed to assess the relations between variables. High relative DTC for stride time, stride velocity and stride length were associated with divided attention at fast walking speed. High relative DTC for stride time was associated with divided attention at preferred walking speed. The association between high DTC of stride length and memory was less robust and only observable at preferred walking speed. None of the gait measures was associated with inhibition. Spatial and temporal dual task cost characteristics of gait are especially associated with divided attention in older adults. The results showed that the associated DTC differ by executive function and the nature of the task (preferred versus fast walking). Further research is warranted to determine whether improvement in divided attention translates to better performance on selected complex walking tasks.
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影响因子：
3.2
作者：
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通讯作者：
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DOI：
10.1111/j.1532-5415.2000.tb04786.x
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