Movement variability and limb loading symmetry during simulated daily functional tasks

IF 1.6 3区心理学 Q4 NEUROSCIENCES

Human Movement Science Pub Date : 2024-09-20 DOI:10.1016/j.humov.2024.103289

Jill E. Streamer , Robin M. Queen

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引用次数: 0

Abstract

Movement variability describes an individual's capacity to repeatedly perform motor skills and provides better understanding of coordination during a task. The purpose of this research was to assess the impact that task type and sex assigned at birth have on movement variability and load symmetry in healthy younger adults. It was hypothesized that the between trial variability of peak impact force and average loading rate would not differ between sexes or between tasks (level walking, stair ascent, stair descent, and sit-to-stand) and that load symmetry would not differ between the four tasks for an individual participant using a level of significance of α = 0.05. Peak impact force (PIF) and average loading rate (ALR) were measured during level walking, stair ascent and descent, and sit-to-stand using loadsol® sensors collecting at 200 Hz (Novel Electronics, Pittsburg, PA, USA). Coefficients of variation (CV) and the Absolute Symmetry Index (ASI) were used to assess symmetry and movement variability. Between the 39 female and 33 male young adults that participated in this study, significant differences (p < 0.001) were observed between groups for mass, height, and limb length. PIF did not show an interaction between sex and task (p = 0.627) or between sexes (p = 0.685) but did show between-task differences (p < 0.001). The PIF ASI also showed a difference between tasks (p < 0.001). Tukey's post hoc testing showed that the PIF ASI differences between the sit-to-stand task and the other tasks were clinically meaningful (d > 0.8). The ALR did not show an interaction between sex and task (p = 0.069) or between sexes (p = 0.624) but did show between-task differences (p < 0.001). Tukey's showed that the ALR was different between tasks and was clinically meaningful (d > 0.8) except between level walking and stair ascent (p = 0.546). The ALR ASI showed a different between tasks (p < 0.001). Tukey's showed that the ALR ASI differences between tasks were all clinically meaningful (d > 0.8) except between level walking and stair ascent (p = 0.220).These findings suggest that the movement variability for all loading metrics that existed between tasks could be due to difference in motor control and the width of the base of support needed to complete the various tasks. For example, the joint coordination to complete a sit-to-stand task is different than what is needed during walking, stair ascent and stair descent. Understanding variability observed between daily tasks helps identify movement patterns that could be potential risk factors for injury.

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模拟日常功能任务中的运动变异性和肢体负荷对称性

运动变异性描述了一个人重复执行运动技能的能力，并能让人更好地理解任务过程中的协调性。本研究的目的是评估任务类型和出生时性别对健康年轻成年人运动变异性和负荷对称性的影响。假设不同性别或不同任务（平地行走、爬楼梯、下楼梯和坐立）之间的峰值冲击力和平均负荷率的试验变异性不会有差异，并且对个体参与者而言，负荷对称性在四项任务之间不会有差异，显著性水平为 α = 0.05。在平地行走、上下楼梯和坐立过程中，使用 loadsol® 传感器（Novel Electronics，Pittsburg, PA, USA）以 200 Hz 的频率采集峰值冲击力（PIF）和平均负荷率（ALR）。变异系数（CV）和绝对对称指数（ASI）用于评估对称性和运动变异性。在参与本研究的 39 名女性和 33 名男性青壮年中，观察到各组之间在体重、身高和肢长方面存在显著差异（p < 0.001）。PIF 在性别和任务之间（p = 0.627）或性别之间（p = 0.685）没有显示出交互作用，但在任务之间显示出差异（p < 0.001）。PIF ASI 也显示出任务间的差异（p < 0.001）。Tukey事后检验表明，坐立任务与其他任务之间的PIF ASI差异具有临床意义（d > 0.8）。ALR 在性别和任务之间（p = 0.069）或性别之间（p = 0.624）没有显示出交互作用，但在任务之间显示出差异（p < 0.001）。Tukey's显示，ALR在不同任务之间存在差异，且具有临床意义（d > 0.8），但在平地行走和爬楼梯之间除外（p = 0.546）。ALR ASI 在不同任务之间存在差异（p = 0.001）。Tukey's显示，除了平地行走和爬楼梯之间的差异（p = 0.220）外，其他任务之间的ALR ASI差异均有临床意义（d > 0.8）。这些研究结果表明，不同任务之间存在的所有负荷指标的运动变异性可能是由于完成不同任务所需的运动控制和支撑基础宽度的差异造成的。例如，完成 "从坐到站 "任务所需的关节协调与步行、上楼梯和下楼梯时所需的关节协调不同。了解日常任务之间的差异有助于识别可能成为潜在受伤风险因素的运动模式。

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

Human Movement Science 医学-神经科学

CiteScore

3.80

自引率

4.80%

发文量

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."