Effects of Task Difficulty on Postural Control During a Combined Gait Termination and Manual Task.

IF 0.9 4区 医学 Q4 NEUROSCIENCES
Motor Control Pub Date : 2025-03-13 Print Date: 2025-04-01 DOI:10.1123/mc.2024-0081
Hwigeum Jeong, Samuel Carey, Richard Van Emmerik
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引用次数: 0

Abstract

Task difficulty is a major factor that affects postural control and stability. However, there is little information about the effects of task difficulty on postural control during gait termination in combination with a manual task. The present study investigated postural control during combined gait termination and a manual task with different levels of manual task difficulty. Right-handed, healthy young adults (n = 15) performed five trials of combined gait termination with a manual fitting task for each of four different manual task conditions, varying target size (large and small) and distance (short and long). Average time-to-contact of the center of pressure and upper body (sternum) was assessed in three separate phases of the combined task: preparation, reaching, and stabilization phases. Longer reaching distance reduced time-to-contact not only in the reaching phase but also in both the preparation and stabilization phases. However, there were no effects of target size on time-to-contact. These results indicate that increasing manual task demands requires integration throughout gait termination and can impact postural stabilization after task completion even in young healthy adults.

任务难度对联合步态终止和手动任务中姿势控制的影响。
任务难度是影响体位控制和稳定性的主要因素。然而,关于任务难度对步态终止与手动任务相结合时姿势控制的影响的信息很少。本研究研究了不同难度的人工动作和步态终止联合动作时的姿势控制。右撇子健康年轻人(n = 15)对四种不同的手动任务条件,不同的目标尺寸(大和小)和距离(短和长)进行了五项联合步态终止和手动拟合任务的试验。压力中心与上半身(胸骨)接触的平均时间在联合任务的三个独立阶段进行评估:准备阶段、到达阶段和稳定阶段。较长的到达距离不仅缩短了到达阶段的接触时间,而且缩短了制备阶段和稳定阶段的接触时间。然而,目标尺寸对接触时间没有影响。这些结果表明,体力任务需求的增加需要整个步态终止过程的整合,即使在年轻健康的成年人中,也可能影响任务完成后的姿势稳定。
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来源期刊
Motor Control
Motor Control 医学-神经科学
CiteScore
1.80
自引率
9.10%
发文量
48
审稿时长
>12 weeks
期刊介绍: Motor Control (MC), a peer-reviewed journal, provides a multidisciplinary examination of human movement across the lifespan. To keep you abreast of current developments in the field of motor control, it offers timely coverage of important topics, including issues related to motor disorders. This international journal publishes many types of research papers, from clinical experimental to modeling and theoretical studies. These papers come from such varied disciplines as biomechanics, kinesiology, neurophysiology, neuroscience, psychology, physical medicine, and rehabilitation. Motor Control, the official journal of the International Society of Motor Control, is designed to provide a multidisciplinary forum for the exchange of scientific information on the control of human movement across the lifespan, including issues related to motor disorders. Motor Control encourages submission of papers from a variety of disciplines including, but not limited to, biomechanics, kinesiology, neurophysiology, neuroscience, psychology, physical medicine, and rehabilitation. This peer-reviewed journal publishes a wide variety of types of research papers including clinical experimental, modeling, and theoretical studies. To be considered for publication, papers should clearly demonstrate a contribution to the understanding of control of movement. In addition to publishing research papers, Motor Control publishes review articles, quick communications, commentaries, target articles, and book reviews. When warranted, an entire issue may be devoted to a specific topic within the area of motor control.
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