Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University, Saitama, Japan.
Department of Health Promotion Science, Tokyo Metropolitan University, Tokyo, Japan.
J Mot Behav. 2023;55(4):331-340. doi: 10.1080/00222895.2023.2199692. Epub 2023 Apr 11.
In this study, the relationship between behavioral complexity (sample entropy, SEn) during steady walking and the quickness of subsequent turning performance in older adults. Herein, healthy older and younger adults (n = 12 each) were instructed to walk straight and then turn into an intersection surrounded by four pylons. This walking task was performed under two turning conditions: reactive and pre-planned turning, where the direction of turning was unknown until immediately before turning or was informed beforehand, respectively. For older adults, behavioral complexity was comparable under both conditions, but was higher under reactive than pre-planned turning condition for younger adults. This suggests that older adults cannot adapt their walking patterns in response to turning conditions. Correlation analysis showed that older adults with lower SEn had more difficulty in turning rapidly under reactive turning condition, indicating a relationship between the two variables. Thus, deterioration of the reactive turning performance in older adults is related to stereotyped movements during steady walking.
在这项研究中，研究了老年人在稳定行走时的行为复杂性（样本熵，SEn）与后续转弯表现的敏捷性之间的关系。在此，健康的老年人和年轻人（每组各 12 人）被要求直走，然后转弯进入四个标杆环绕的十字路口。在两种转弯条件下执行此行走任务：反应性转弯和预先计划转弯，其中转弯方向在转弯前未知或事先告知。对于老年人，两种情况下的行为复杂性相当，但对于年轻人，反应性转弯条件下的行为复杂性高于预先计划转弯条件。这表明老年人无法根据转弯条件调整他们的行走模式。相关分析表明，SEn 较低的老年人在反应性转弯条件下快速转弯更加困难，表明这两个变量之间存在关系。因此，老年人反应性转弯表现的恶化与稳定行走时的刻板运动有关。
