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NONLINEAR BEHAVIOR OF MUSCLE RESPONSES FOR FOUR STATIC POSTURES OBSERVED AT WORK

机译：工作中观察到的四个静态姿势的肌肉反应的非线性行为

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The primary objective of the study was to explore the nonlinear characteristics of surface myoelectrical activity of the biceps muscle during four static postures observed on the assembly line. The results showed significant differences in the largest Lyapunov exponents between four postures. The surface EMG of the biceps brachii was more chaotic under the maximum loading in MVC posture with elbow fully extended (180 degrees) and static posture with 180 degrees shoulder flexion compared to two other static postures. Based on the Kaplan-Yorke dimension, it was found that dimensional complexity was higher for MVC posture than for posture with 135 degrees shoulder flexion, posture with 180 degrees shoulder flexion, and posture with 90 degrees shoulder flexion and abduction. Interaction effects of posture and trial with respect to the largest Lyapunov exponents and Kaplan-Yorke dimension characteristics of the EMG signals showed higher levels of chaos and complexity patterns in MVC postures compared to other static postures.

机译：该研究的主要目的是探讨在装配线上观察到的四个静态姿势期间二头肌肌肉表面肌电活动的非线性特征。结果显示四种姿势之间最大的Lyapunov指数存在显着差异。与其他两个静态姿势相比，在MVC姿势（肘部完全伸展（180度））和静态姿势（肩屈180度）的最大负荷下，肱二头肌的表面肌电图更加混乱。基于Kaplan-Yorke维度，发现MVC姿势的尺寸复杂度高于肩部弯曲度为135度，肩部弯曲度为180度以及肩部弯曲和外展度为90度的姿态。相对于最大的Lyapunov指数和EMG信号的Kaplan-Yorke维度特征，姿势和试验的交互作用显示出MVC姿势比其他静态姿势更高的混乱度和复杂度。

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《》|2004年|p.1-5|共5页
会议地点 New Orleans LA(US);New Orleans LA(US)
作者
David Rodrick; Waldemar Karwowski;
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Center for Industrial Ergonomics Room 445 Lutz Hall University of Louisville Louisville KY 40292 USA;

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1. Nonlinear Dynamical Behavior of Surface Electromyographical Signals of Biceps Muscle Under Two Simulated Static Work Postures [J] . David Rodrick, Waldemar Karwowski Nonlinear dynamics, psychology and life sciences . 2006,第1期

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4. NONLINEAR BEHAVIOR OF MUSCLE RESPONSES FOR FOUR STATIC POSTURES OBSERVED AT WORK [C] . David Rodrick, Waldemar Karwowski Annual Meeting of the Human Factors and Ergonomics Society . 2004

机译：在工作中观察到四个静态姿势的肌肉反应的非线性行为
5. The effects of aging on multiple postural muscle control and postural sway behavior. [D] . Degani, Adriana Menezes. 2016

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6. Investigation of observational methods assessing workload of static working postures based on surface electromyography [O] . Tobias Hellig, Vera Rick, Alexander Mertens, -1

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机译：在可比较的工作负荷下，波动反射和中心动脉压对静态和动态肌肉收缩的响应增加

NONLINEAR BEHAVIOR OF MUSCLE RESPONSES FOR FOUR STATIC POSTURES OBSERVED AT WORK

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