徐擎, 莫仕围, 胡新尧, 李楚豪, 段青松, 岳鹏, 赵文悦, 钟志康, 牛邓强, 丁宇欣, 张梦莹, 王忠旭, 贾宁. 隧道防水工钉枪作业局部肌肉负荷与疲劳预警的分析与研究[J]. 职业卫生与应急救援, 2024, 42(2): 142-147. DOI: 10.16369/j.oher.issn.1007-1326.2024.02.001
引用本文: 徐擎, 莫仕围, 胡新尧, 李楚豪, 段青松, 岳鹏, 赵文悦, 钟志康, 牛邓强, 丁宇欣, 张梦莹, 王忠旭, 贾宁. 隧道防水工钉枪作业局部肌肉负荷与疲劳预警的分析与研究[J]. 职业卫生与应急救援, 2024, 42(2): 142-147. DOI: 10.16369/j.oher.issn.1007-1326.2024.02.001
shu
XU Qing, MO Shiwei, HU Xinyao, LI Chuhao, DUAN Qingsong, YUE Peng, ZHAO Wenyue, ZHONG Zhikang, NIU Dengqiang, DING Yuxin, ZHANG Mengying, WANG Zhongxu, JIA Ning. Study on local muscle load level and fatigue monitoring in tunnel-construction workers engaged in nail-gun operation[J]. Occupational Health and Emergency Rescue, 2024, 42(2): 142-147. DOI: 10.16369/j.oher.issn.1007-1326.2024.02.001
Citation: XU Qing, MO Shiwei, HU Xinyao, LI Chuhao, DUAN Qingsong, YUE Peng, ZHAO Wenyue, ZHONG Zhikang, NIU Dengqiang, DING Yuxin, ZHANG Mengying, WANG Zhongxu, JIA Ning. Study on local muscle load level and fatigue monitoring in tunnel-construction workers engaged in nail-gun operation[J]. Occupational Health and Emergency Rescue, 2024, 42(2): 142-147. DOI: 10.16369/j.oher.issn.1007-1326.2024.02.001
shu

隧道防水工钉枪作业局部肌肉负荷与疲劳预警的分析与研究

Study on local muscle load level and fatigue monitoring in tunnel-construction workers engaged in nail-gun operation

    摘要
  • 摘要:
    目的 利用表面肌电描记（surface electromyography，sEMG）技术探究隧道防水作业典型肌肉负荷水平与肌肉疲劳间的关系，为客观评定肌肉疲劳提供方法依据。
    方法 2023年4月，采用现场实验方法，从隧道防水施工现场选择9名钉枪作业人员，使用sEMG方法采集其防水作业全流程中肱桡肌、肱二头肌和肱三头肌的表面肌电信号，并通过问卷调查其主观疲劳感觉（rating of perceived exertion，RPE）分值，分析目标肌肉时域、频域指标和RPE分值的关系，利用联合频谱振幅分析法（joint amplitude and spectrum analysis，JASA）对受试对象局部肌肉疲劳情况进行分析。
    结果 9名受试对象相同疲劳程度（以RPE分值计）下的肌电数据符合正态分布（P＞0.05）。随RPE分值逐渐上升，对应肱桡肌标准化均方根值（percentage of maximal voluntary electrical activation，MVE）呈先上升、再下降又快速上升的趋势，肱二头肌的肌电MVE呈波动上升的趋势，而肱三头肌肌电MVE呈先下降、再快速上升又下降的趋势；随RPE评分逐渐上升，对应肱桡肌、肱二头肌的肌电中位频率（media frequency，MF）呈先上升、再下降的趋势，肱三头肌的肌电MF呈波动下降的趋势。不同RPE分值组肱二头肌、肱桡肌、肱三头肌的肌电MVE、MF差异均有统计学意义（P＜0.01）。肱桡肌在RPE分值为10分、15分和17分时出现疲劳；肱二头肌在RPE分值为13分、14分、16分和17分时出现疲劳；肱三头肌在RPE分值为11分、12分、13分、14分和15分时出现疲劳。
    结论 表面肌电的时域和频域信号通过JASA法判别受试对象当前肌肉疲劳状态与主观RPE分值调查有一致性，但表面肌电技术在实际作业场景中应用尚存在问题，仍需要进一步探究。

     

    Abstract:
    Objective This study aimed to investigate the correlation between typical muscle load levels and muscle fatigue of tunnel-construction workers during tunnel waterproofing operations using surface electromyography (sEMG). The findings will provide a methodological foundation for the objective assessment of muscle fatigue.
    Methods Using the field experiment method, nine nail-gun operators were selected from the tunnel waterproofing operations site in April 2023. The surface electromyography signaling of their brachioradialis, biceps, and triceps in the whole process of the tunnel waterproofing operations was gathered using sEMG, and their rating of perceived exertion (RPE) was surveyed with the questionnaire. An analysis was conducted to determine the relationship between time-domain and frequency-domain indicators of the target muscles and the RPE scores. The JASA method was employed to analyze the local muscle fatigue of the workers.
    Results The electromyographic data of nine workers under the same fatigue degree (calculated by RPE score) were in the normal distribution (P > 0.05). With the gradual increase of the RPE score, the percentage of maximal voluntary electrical activation (MVE) of the brachioradialis showed a trend of initially rising, subsequently falling, and then rapidly increasing;the MVE of the biceps showed a fluctuating upward trajectory;and the MVE of the triceps showed a trend of first decreasing, then rapidly rising, and then decreasing. With the gradual increase in RPE score, the corresponding media frequency (MF) of both the brachioradialis and biceps showed a trend of initially increasing and then decreasing, while the MF of the triceps showed a fluctuating downward trend. There were statistically significant differences in both MVE and MF of the brachioradialis, biceps, and triceps among different groups with varied RPE scores (P < 0.01). Fatigue occurred in the brachioradialis at RPE scores of 10, 15, and 17; fatigue in the biceps at RPE scores of 13, 14, 16, and 17; and fatigue in the triceps at RPE scores of 11, 12, 13, 14, and 15.
    Conclusions The time-domain and frequency-domain signals of surface electromyography were consistent with the subjective RPE score survey in judging the current muscle fatigue state of the workers by the JASA method. Nevertheless, challenges still remained in applying sEMG technology to real-world operational settings, necessitating further research.

     

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