Effects of Cognitive Dysfunction and Dual Task on Gait Speed and Prefrontal Cortex Activation in Community-Dwelling Older Adults.

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Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition Pub Date : 2022-03-01 Epub Date: 2020-12-23 DOI:10.1080/13825585.2020.1866156

Shinnosuke Nosaka, Ken Imada, Hitoshi Okamura

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引用次数: 5

Abstract

We aimed to determine how prefrontal cortex activation and gait speed during walking is affected by cognitive dysfunction and dual-tasking. Eleven and 14 participants were included in the MOCA-J (Japanese version of the Montreal Cognitive Assessment score) < 26 (age, 76.0 ± 5.7 years; sex, six men and five women) and the MOCA-J ≥ 26 groups (age 73.9 ± 4.3 years; sex, seven men and seven women), respectively. We measured prefrontal cortex oxygenated hemoglobin (oxy-Hb) levels (using Pocket NIRS HM), and gait speed during normal and dual-task walking (a letter fluency task was added). The oxy-Hb levels were significantly lower in the MOCA-J < 26 group than in the MOCA-J ≥ 26 group during dual-task walking. The gait speed was significantly lower during dual-task walking, compared with normal walking, in the MOCA-J < 26group.These results may have been influenced by the compensatory mechanisms in the frontal lobe.

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认知功能障碍和双重任务对社区老年人步态速度和前额叶皮层激活的影响。

我们的目的是确定认知功能障碍和双重任务如何影响行走时前额叶皮层的激活和步态速度。MOCA-J(日文版蒙特利尔认知评估评分)< 26(年龄，76.0±5.7岁;性别，6男5女)和MOCA-J≥26组(年龄73.9±4.3岁;性(七男七女)。我们测量了前额皮质氧合血红蛋白(oxy-Hb)水平(使用Pocket NIRS HM)，以及正常和双任务行走时的步态速度(增加了字母流畅性任务)。在双任务行走中，MOCA-J < 26组的氧- hb水平明显低于MOCA-J≥26组。在MOCA-J < 26组中，双任务行走时的步态速度明显低于正常行走。这些结果可能受到额叶代偿机制的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition

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