OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (16): 2166-2171.

• Treatise—Occupational Health and Occupational Diseases • Previous Articles     Next Articles

Investigation and analysis of influencing factors of localized work fatigue after continuous work among laborers in the metal products industry in Qingpu District of Shanghai City

LIU Xiaoxiao1, FENG Ruihua1, LU Chenru1, YIN Yan2(), YE Kaiyou1()   

  1. 1 Shanghai Qingpu District Center for Disease Control and Prevention(Institute of Health Supervision)Shanghai 201799, China
    2 Shanghai Municipal Center for Disease Control and PreventionShanghai 200336, China

Abstract:

Objective To analyze the prevalence and influencing factors of localized work fatigue after continuous work among laborers in the metal products industry in Qingpu District of Shanghai City. Methods Data were collected from the work-related diseases surveillance questionnaire of key industries in Qingpu District of Shanghai City,and a total of 522 valid questionnaires were collected,including 359 males(68.77%) and 163 females(31.23%). Binary Logistic regression was conducted to explore the influencing factors. Results The incidence of localized work fatigue after continuous work among laborers was 51.7%. Logistic regression analysis revealed that workers with higher educational level and longer cumulative rest duration had a lower risk of localized work fatigue. For each unit increase,the risk of localized fatigue decreased by 0.628 times(95%CI:0.465-0.850) and 0.694 times(95%CI:0.504-0.957),respectively.Workers with poor physical condition,history of trauma,or musculoskeletal pain had a significantly higher risk of localized fatigue,with odds ratios of 2.650(95%CI:1.709-4.108),3.321(95%CI:1.087-10.146),and 5.834(95%CI:3.225-10.553),respectively,compared to those without these conditions. Laborers who had a higher frequency of physical exercise after work and more frequent upper limb or hand force demand at work were at a higher risk of localized work fatigue. For each unit increase,the risk of localized fatigue increased by 1.403 times(95%CI:1.015-1.940) and 1.361 times(95%CI:1.080-1.716),respectively. Working in an uncomfortable posture,sufficient rest time,and continued working after rest were factors that increased risks of localized work fatigue,with odds ratios of 4.327(95%CI:1.817-10.302),0.461(95%CI:0.283-0.750),and 3.358(95%CI:1.586-7.112),respectively,compared to workers who did not have these conditions. Besides,laborers engaged in three-shift work had a higher risk of localized work fatigue[4.211 times(95%CI:1.866-9.503)] compared to those who did not work in shifts. Conclusion Enterprise managers can alleviate the occurrence of localized fatigue of workers,thus improve production efficiency and quality by enhancing the working environment,optimizing work processes,and providing appropriate rest time.

Key words: Metal products industry, Continuous work, Localized work fatigue, Prevalence, Influencing factors, Logistic regression

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