Dual task walking in healthy aging: Effects of narrow and wide walking paths.
Dual task walking in healthy aging: Effects of narrow and wide walking paths.
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DOI：
10.1371/journal.pone.0261647
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Doumas M
中科院分区：
文献类型：
--
作者：
Hennah C;Ellis G;Doumas M
双任务行走可能导致步态不稳和老年人跌倒的风险更高，特别是在忙碌的城市街道上行走时。狭窄的人行道等街道特征不仅阻碍步行，而且还可能对老年人的认知资源和步态特征造成负担。这项研究的目的是评估老年人的步态特征是如何受到在狭窄的道路上行走的影响，同时在模拟常见城市环境的实验室条件下执行具有挑战性的认知任务。19名年轻人和18名老年人走在一条窄（40厘米）和宽（80厘米）的路径上，并进行了一项认知（n-back）任务，分别调整到80%的准确率。这两项任务分别进行（单任务）和同时进行（双任务）。两组老年人在狭窄路径上行走速度更快，步宽更窄，在狭窄路径上进行双任务行走时，老年人在认知任务、步态速度、步宽和步长方面表现出显著的双任务成本。在两个年龄组中，双任务行走与步态速度和步幅的降低有关，这表明双任务行走可能会对步态产生不利影响，特别是在狭窄的路径上行走时。这些情况可能会导致步态不稳和老年人跌倒风险增加，特别是在建筑环境中常见的狭窄人行道上沿着时。然而，需要在城市环境中进行更多的研究，以确定老年人在狭窄的人行道上跌倒的风险程度。
Dual-task walking may lead to gait instability and a higher fall risk in older adults, particularly when walking in a busy city street. Challenging street features such as narrow sidewalks not only discourage walking, but are also likely to be taxing for older adults’ cognitive resources and gait characteristics. The aim of this study was to assess the way older adults’ gait characteristics are affected by walking on a narrow path while performing a challenging cognitive task in lab conditions imitating common urban environments. Nineteen young and eighteen older adults walked on a narrow (40cm) and a wide (80cm) path and performed a cognitive (n-back) task individually adjusted to 80% accuracy. The two tasks were performed separately (Single-Task) and concurrently (Dual-Task). Both groups walked faster, and their step width was narrower on the narrow path. During dual-task walking on the narrow path, older adults showed significant dual-task costs in the cognitive task, gait speed, step width, and stride length. Dual-task walking was associated with decreased gait speed and stride length in both age groups, suggesting that dual-task walking may adversely affect gait, particularly when walking on narrow paths. These conditions may lead to gait instability and an increased fall risk for older adults, particularly when walking along the narrow sidewalks commonly found within the built environment. However, more research is needed in an urban setting to determine the extent of the fall risk narrow sidewalks present for older adults.
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影响因子：
3.1
作者：
Beurskens R;Bock O
通讯作者：
Bock O
影响因子：
2
作者：
Doumas, Michail;Smolders, Caroline;Krampe, Ralf Th.
通讯作者：
Krampe, Ralf Th.
影响因子：
4.8
作者：
Michael, Yvonne L.;Green, Mandy K.;Farquhar, Stephanie A.
通讯作者：
Farquhar, Stephanie A.
DOI：
10.1249/mss.0b013e31817c65d0
发表时间：
2008-07-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Lee, I-Min;Buchner, David M.
通讯作者：
Buchner, David M.
影响因子：
2.1
作者：
Beurskens, Rainer;Bock, Otmar
通讯作者：
Bock, Otmar