Upright standing and gait: Are there changes in attentional requirements related to normal aging?
Upright standing and gait: Are there changes in attentional requirements related to normal aging?
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DOI：
10.1080/03610739608254006
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发表时间：
1996-04-01
影响因子：
1.8
通讯作者：
Fleury, M
中科院分区：
文献类型：
--
作者：
Lajoie, Y;Teasdale, N;Fleury, M
本研究评估了年轻人和老年人保持直立姿势和行走的注意力需求，以确定在正常老化的情况下，平衡控制所需的注意力资源分配是否存在不足和/或修改。8名年轻人和8名老年人被要求对听觉反应时间（RT）任务（次要任务）作出反应，而在一个坐姿，而在一个广泛的支持或狭窄的支持直立的立场，而步行（主要任务）。减少支助基础使老年人的RT比年轻人慢。老年人走路的速度比年轻人慢。他们的步幅也更短。据报道，这些适应性改变可以产生更安全的步态。即便如此，他们对探测RT任务的反应比年轻人更延迟。总之，结果表明，正常老化需要更大比例的注意力资源分配给姿势任务的平衡需求。
This study evaluates attentional requirements for maintaining an upright posture and for walking among young and elderly persons to determine if, with normal aging, there is a deficit and/or a modification in the allocation of the attentional resources necessary for balance control. Eight young adults and 8 elderly persons were asked to respond to an auditory reaction time (RT) task (secondary task) while in a seated position, while in a broad-support or narrow-support upright standing position, and while walking (primary tasks). Reducing the base of support yielded slower RTs for the elderly than for the young persons. When walking, the elderly persons adopted a slower speed than young persons. They also had a shorter stride length. These adaptations have been reported to produce a more secure gait. Even so, they responded to the probe RT task with greater delays than young adults. Together, the results suggest that normal aging requires that a greater proportion of attentional resources be allocated to the balance demands of postural tasks.