Benefits of postural sway to succeed in goal-directed visual tasks

IF 1.6 3区 心理学 Q4 NEUROSCIENCES Human Movement Science Pub Date : 2024-08-28 DOI:10.1016/j.humov.2024.103277
Cédrick T. Bonnet , Yann-Romain Kechabia , Ivan Magnani , Paula F. Polastri , Sérgio T. Rodrigues
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Abstract

When individuals stand, they sway and so have to maintain their balance. It is generally expected that task performance is worse when standing and swaying than when sitting and therefore not swaying. In contrast, we hypothesized that greater sway is associated with better task performance in the absence of external perturbations of posture. Twenty-four healthy, young adults performed two goal-directed, modified Stroop tasks (incongruent and reversed incongruent) in four body position conditions (standing against a vertical surface, and standing freely with a wide, standard or narrow stance). Centre of pressure (COP) sway, head sway, eye movements, visual attention, and task performance were recorded. Partial correlation analyses showed significant positive associations between task performance and some COP and head sway variables, after controlling for the level of visual attention. Analyses of variance with three factors (body position, task difficulty, target distance) also showed significant interaction effects between body position (and therefore postural sway) and the number of accurate target findings. The presence of these interactions showed that narrow stance was both the best body position for performing the incongruent task and the worst body position for performing the reversed incongruent task. Overall, COP sway and head sway can increase task performance. Hence, healthy, young adults in quiet stance appear to use sway to explore their environment more effectively. However, it should be borne in mind that our hypothesis was formulated solely with regard to healthy, young adults standing in quiet stance.

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姿势摇摆对成功完成目标导向型视觉任务的益处
人在站立时会摇晃,因此必须保持平衡。一般来说,站立和摇摆时的任务表现会比坐着不摇摆时差。与此相反,我们假设在没有外部姿势干扰的情况下,摇摆幅度越大,任务表现越好。24 名健康的年轻成年人在四种身体姿势条件下(靠垂直面站立、自由站立、宽站立、标准站立或窄站立)完成了两项目标导向的改良 Stroop 任务(不协调和反向不协调)。对压力中心(COP)摇摆、头部摇摆、眼球运动、视觉注意力和任务表现进行了记录。偏相关分析表明,在控制了视觉注意力水平之后,任务表现与某些 COP 和头部摇摆变量之间存在显著的正相关。三个因素(身体位置、任务难度、目标距离)的方差分析还显示,身体位置(因此也包括姿势摇摆)与准确发现目标的次数之间存在明显的交互作用。这些交互作用的存在表明,窄站姿既是执行不协调任务的最佳身体姿势,也是执行反向不协调任务的最差身体姿势。总的来说,COP 摇摆和头部摇摆可以提高任务表现。因此,保持安静姿势的健康青壮年似乎可以更有效地利用摇摆来探索周围环境。不过,需要注意的是,我们的假设仅针对以安静姿态站立的健康青壮年。
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来源期刊
Human Movement Science
Human Movement Science 医学-神经科学
CiteScore
3.80
自引率
4.80%
发文量
89
审稿时长
42 days
期刊介绍: Human Movement Science provides a medium for publishing disciplinary and multidisciplinary studies on human movement. It brings together psychological, biomechanical and neurophysiological research on the control, organization and learning of human movement, including the perceptual support of movement. The overarching goal of the journal is to publish articles that help advance theoretical understanding of the control and organization of human movement, as well as changes therein as a function of development, learning and rehabilitation. The nature of the research reported may vary from fundamental theoretical or empirical studies to more applied studies in the fields of, for example, sport, dance and rehabilitation with the proviso that all studies have a distinct theoretical bearing. Also, reviews and meta-studies advancing the understanding of human movement are welcome. These aims and scope imply that purely descriptive studies are not acceptable, while methodological articles are only acceptable if the methodology in question opens up new vistas in understanding the control and organization of human movement. The same holds for articles on exercise physiology, which in general are not supported, unless they speak to the control and organization of human movement. In general, it is required that the theoretical message of articles published in Human Movement Science is, to a certain extent, innovative and not dismissible as just "more of the same."
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