Comparing dynamic and stationary standing postures in an assembly task
Comparing dynamic and stationary standing postures in an assembly task
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DOI：
10.1016/j.ergon.2008.10.017
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发表时间：
2009-09-01
影响因子：
3.1
通讯作者：
Regulapati, Rahul
中科院分区：
文献类型：
--
作者：
Balasubramanian, Venkatesh;Adalarasu, K.;Regulapati, Rahul
在装配线等单调工作中长时间站立可能会导致肌肉骨骼疾病，包括活动肌肉的疲劳、疼痛和僵硬增加。本研究通过表面肌电信号和心理物理分析来评估动态站立姿势相对于静态站立姿势在减轻身体压力方面的效果。从表面肌电信号的研究中发现，与动态站立姿势相比，静态站立姿势的腿部和下背部肌肉的疲劳率显著更高(p<；0.05)。这一发现得到了心理物理测试结果的证实。本研究中提出的人体工学动态姿势设计可以很容易地被大多数车间吸收，以减少肌肉骨骼疾病的发生率。与行业相关：在车间和流水线工作期间，建议的动态站立比固定站立可以减少疲劳和患上下肢疾病的风险。动态站立易于实现，可以整合到现有的装配线中。这可以通过减少与工作相关的肌肉骨骼疾病来提高职业安全。(C)2008爱思唯尔B.V.保留所有权利。
Prolonged standing during monotonous tasks such as assembly line jobs may lead to musculoskeletal disorders including increased fatigue, pain and stiffness in active muscles. This study evaluated the efficacy of a dynamic standing posture over the stationary standing posture in reducing physical stress using sEMG and psychophysical analysis. From the sEMG study, it was found that the fatigue rates in leg and lower back muscles were significantly higher (p < 0.05) in the stationary standing posture as compared to the dynamic standing posture. This finding was corroborated by the results of psychophysical test. Ergonomic design of the dynamic posture that has been proposed in this study can be easily absorbed into most shop-floors to decrease the incidence of musculoskeletal disorders.Relevance to Industry: The proposed dynamic standing can decrease fatigue and risk of acquiring lower extremity disorders than a stationary standing during shop-floor and assembly line duties. Dynamic standing is simple to implement and can be incorporated in existing assembly line. This can improve occupational safety by reducing work-related musculoskeletal disorders. (C) 2008 Elsevier B.V. All rights reserved.