Variability of Postural Coordination in Dual-Task Paradigm.

IF 1.1 4区心理学 Q4 NEUROSCIENCES

Journal of Motor Behavior Pub Date : 2024-01-01 Epub Date: 2023-07-10 DOI:10.1080/00222895.2023.2226630

Rezvan Azimi, Behrouz Abdoli, Mohammad Ali Sanjari, Reza Khosrowabadi

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引用次数: 0

Abstract

Postural control is influenced by cognition. In most studies, variability of motor output has been considered regardless of variability in patterns of joint coordination. Uncontrolled manifold framework has been applied to decompose the joint's variance in two components. The first component leaves position of the center of mass in anterior-posterior direction (CoM_AP) unchanged (V_UCM) while the second component is in charge of variations of CoM (V_ORT). In this study, 30 healthy young volunteers were recruited. The experimental protocol consisted of three random conditions: quiet standing on a narrow wooden block without a cognitive task (NB), quiet standing on a narrow wooden block with an easy cognitive task (NBE), and quiet standing on a narrow wooden block with a difficult cognitive task (NBD). Results showed that CoM_AP sway in NB condition was higher than both NBE and NBD conditions (p = .001). V_ORT in NB condition was higher than NBE and NBD conditions (p = .003). V_ORT in NB condition was higher than NBE and NBD conditions (p = .003). V_UCM was unchanged in all conditions (p = 1.00) and synergy index in NB condition was smaller than NBE and NBD conditions (p = .006). These results showed that postural synergies increased under dual-task conditions.

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双任务范式中姿势协调的可变性

姿势控制受认知的影响。在大多数研究中，运动输出的变异性被认为与关节协调模式的变异性无关。非受控流形框架被用于将关节变异分解为两个部分。第一个分量使前后方向的质心位置（CoMAP）保持不变（VUCM），而第二个分量则负责质心的变化（VORT）。本研究招募了 30 名健康的年轻志愿者。实验方案包括三种随机条件：安静地站在没有认知任务的窄木块上（NB）、安静地站在有简单认知任务的窄木块上（NBE）和安静地站在有困难认知任务的窄木块上（NBD）。结果表明，NB 条件下的 CoMAP 摇摆高于 NBE 和 NBD 条件（p = .001）。NB 条件下的 VORT 高于 NBE 和 NBD 条件（p = .003）。NB 条件下的 VORT 高于 NBE 和 NBD 条件（p = .003）。所有条件下的 VUCM 均保持不变（p = 1.00），NB 条件下的协同指数小于 NBE 和 NBD 条件（p = .006）。这些结果表明，姿势协同作用在双任务条件下有所增加。

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

Journal of Motor Behavior 医学-神经科学

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Motor Behavior, a multidisciplinary journal of movement neuroscience, publishes articles that contribute to a basic understanding of motor control. Articles from different disciplinary perspectives and levels of analysis are encouraged, including neurophysiological, biomechanical, electrophysiological, psychological, mathematical and physical, and clinical approaches. Applied studies are acceptable only to the extent that they provide a significant contribution to a basic issue in motor control. Of special interest to the journal are those articles that attempt to bridge insights from different disciplinary perspectives to infer processes underlying motor control. Those approaches may embrace postural, locomotive, and manipulative aspects of motor functions, as well as coordination of speech articulators and eye movements. Articles dealing with analytical techniques and mathematical modeling are welcome.