Effect of anteroposterior vibration frequency on the risk of lumbar injury in seated individuals.

IF 2 3区工程技术 Q3 ENGINEERING, INDUSTRIAL

Ergonomics Pub Date : 2024-08-16 DOI:10.1080/00140139.2024.2391591

Sheng-Jie Tang, Rui-Chun Dong, Xiang Cheng, Yi-Tang Liu, Zong-Liang Wang, Pei-Biao Zhang

引用次数: 0

Abstract

Few studies investigate the impact of anterior-posterior excitation frequency on the time-domain vibrational response and injury risk of the lumbar spine in seated individuals. Firstly, this study utilised a previously developed finite element model of an upright seated human body on a rigid chair without a backrest to investigate the modes that affect the anterior-posterior vibrations of the seated body. Subsequently, transient dynamic analysis was employed to calculate the lumbar spine's time-domain responses (displacement, stress, and pressure) and risk factors under anteroposterior sinusoidal excitation at varying frequencies (1-8 Hz). Modal analysis suggested the frequencies significantly affecting the lumbar spine's vibration were notably at 4.7 Hz and 5.5 Hz. The transient analysis results and risk factor assessment indicated that the lumbar responses were most pronounced at 5 Hz. In addition, risk factor assessment showed that long-term exposure to 8 Hz vibration was associated with a greater risk of lumbar injury.

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前胸振动频率对坐着的人腰部受伤风险的影响。

很少有研究调查前后激励频率对坐姿人体腰椎时域振动响应和受伤风险的影响。首先，本研究利用之前开发的人体直立坐姿有限元模型，在没有靠背的刚性椅子上研究影响坐姿人体前后振动的模式。随后，采用瞬态动态分析计算了腰椎在不同频率（1-8 赫兹）的前后正弦激励下的时域响应（位移、应力和压力）和风险因素。模态分析表明，对腰椎振动影响较大的频率主要是 4.7 赫兹和 5.5 赫兹。瞬态分析结果和风险因素评估表明，腰椎的反应在 5 赫兹时最为明显。此外，风险因素评估表明，长期暴露于 8 赫兹的振动与腰椎受伤的风险较大有关。

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

Ergonomics 工程技术-工程：工业

CiteScore

4.60

自引率

12.50%

发文量

147

审稿时长

6 months

期刊介绍： Ergonomics, also known as human factors, is the scientific discipline that seeks to understand and improve human interactions with products, equipment, environments and systems. Drawing upon human biology, psychology, engineering and design, Ergonomics aims to develop and apply knowledge and techniques to optimise system performance, whilst protecting the health, safety and well-being of individuals involved. The attention of ergonomics extends across work, leisure and other aspects of our daily lives. The journal Ergonomics is an international refereed publication, with a 60 year tradition of disseminating high quality research. Original submissions, both theoretical and applied, are invited from across the subject, including physical, cognitive, organisational and environmental ergonomics. Papers reporting the findings of research from cognate disciplines are also welcome, where these contribute to understanding equipment, tasks, jobs, systems and environments and the corresponding needs, abilities and limitations of people. All published research articles in this journal have undergone rigorous peer review, based on initial editor screening and anonymous refereeing by independent expert referees.