Dual task effects of walking when talking in Alzheimer's disease
Dual task effects of walking when talking in Alzheimer's disease
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DOI：
10.1016/s0035-3787(04)70849-8
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发表时间：
2004-01-01
影响因子：
3
通讯作者：
Spinnler, H
中科院分区：
文献类型：
--
作者：
Cocchini, G;Della Sala, S;Spinnler, H
之前对阿尔茨海默病(AD)患者的研究表明，走路的速度和准确性会受到同时进行的次级认知任务的极大影响，比如保持对话。两个实验考察了这对AD患者和年龄匹配的老年人行走时认知需求的影响。在实验1中，阿尔茨海默病患者的行走受到同时认知需求的影响比正常老年人更大。实验2表明，当认知任务的需求根据个体能力水平进行调整时，两组在双重任务条件下都受到了同等程度的损害。我们的结论是，步行可能会消耗一般的执行资源，老年人步行更多地依赖这些执行资源，而AD患者的执行系统受损。
Previous studies with Alzheimer Disease (AD) patients have suggested that speed and accuracy in walking can be dramatically affected by a simultaneous secondary cognitive task, such as holding a conversation. Two experiments examined the impact on AD patients and age matched elderly controls of cognitive demands while walking. In Experiment 1 walking for AD patients was more affected than it was for the normal elderly by a concurrent cognitive demand. Experiment 2 demonstrated that both groups were equally impaired under dual task conditions when the demands of the cognitive tasks were adjusted for individual levels of ability. We conclude that walking may draw on general executive resources, that walking relies more heavily on these executive resources in the elderly, and on a damaged executive system for AD patients.