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首页> 外文期刊>Safety and Health at Work >It is Time to Have Rest: How do Break Types Affect Muscular Activity and Perceived Discomfort During Prolonged Sitting Work
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It is Time to Have Rest: How do Break Types Affect Muscular Activity and Perceived Discomfort During Prolonged Sitting Work

机译：现在是时候休息了：破产类型如何影响肌肉活动，并且在长时间的坐骑期间感知不适

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Background Prolonged sitting at work can lead to adverse health outcomes. The health risk of office workers is an increasing concern for the society and industry, with prolonged sitting work becoming more prevalent. Objective This study aimed to explore the variation in muscle activities during prolonged sitting work and found out when and how to take a break to mitigate the risk of muscle symptoms. Methods A preliminary survey was conducted to find out the prevalence of muscle discomfort in sedentary work. Firstly, a 2-h?sedentary computer work was designed based on the preliminary study to investigate the variation in muscle activities. Twenty-four participants took part in the electromyography (EMG) measurement study. The EMG variations in the trapezius muscle and latissimus dorsi were investigated. Then the intervention time was determined based on the EMG measurement study. Secondly, 48 participants were divided into six groups to compare the effectiveness of every break type (passive break, active break of changing their posture, and stand and stretch their body with 5 or 10 mins). Finally, data consisting of EMG amplitudes and spectra and subjective assessment of discomfort were analyzed. Results In the EMG experiment, results from the joint analysis of the spectral and amplitude?method showed muscle fatigue after about 40 mins of sedentary work. In the intervention experiment, the results showed that standing and stretching for 5 mins was the most effective break type, and this type of break could keep the muscles' state at a recovery level for about 30?45 mins. Conclusions This study offers the possibility of being applied to office workers and provides preliminary data support and theoretical exploration for a follow-up early muscle fatigue detection system.
机译：背景技术长时间坐在工作中可以导致健康状况不利。办公室工作人员的健康风险是社会和行业的日益关注，长时间的坐在工作变得更加普遍。目的本研究旨在探讨长时间坐下工作期间肌肉活动的变化，发现何时以及如何休息以减轻肌肉症状的风险。方法进行初步调查，以了解久坐工作中肌肉不适的患病率。首先，根据初步研究设计了2-H？久坐的计算机工作，以研究肌肉活动的变化。二十四位参与者参加了肌电图（EMG）测量研究。调查了梯形肌肉和拉特蛋白酶的EMG变化。然后基于EMG测量研究确定干预时间。其次，48名参与者分为六组，比较每种休息类型的有效性（被动断裂，改变姿势的主动突破，并用5或10分钟支架和伸展身体）。最后，分析了由EMG幅度和光谱组成的数据和对不适的主观评估。结果在EMG实验中，由光谱和振幅的关节分析结果产生Δ方法在约40分钟的久坐性工作后显示肌肉疲劳。在干预实验中，结果表明，站立和拉伸5分钟是最有效的断裂类型，这种破裂可以将肌肉的状态保持在恢复水平约为30？45分钟。结论本研究提供了适用于办公室工作人员的可能性，并为后续早期肌肉疲劳检测系统提供初步数据支持和理论探索。

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