[Study on ergonomic influencing factors of work-related muscular skeletal disorders in online delivery staff in the catering industry].

ABSTRACT

Objective: To analyze the ergonomic influencing factors of work-related muscular skeletal disorders (WMSD) of online delivery staff in the catering industry. Methods: In October 2019, 137 online delivery staff in the catering industry from Nangang District, Xiangfang District and Songbei District in Harbin were investigated by questionnaire and vibration test. The influencing factors of the occurrence of WMSD among online delivery staff were analyzed by multiple logistic regression analysis. Results: Among the 137 subjects, 93 (67.9%) had WMSD, and the prevalence rates of neck (35.8%, 49/137) and shoulder (35.8%, 49/137) were highest. The whole-body vibration (WBV) A (8) and hand-arm vibration (HAV) A (8) of the subjects were 0.43 (0.16, 0.87) m/s(2) and 2.25 (1.22, 6.35) m/s(2), respectively. Multivariate logistic regression analysis showed that high HAV A (8) was significant risk factor for WMSD of online delivery staff (OR=3.053, 95%CI 1.126-8.280) , daily riding time≤6 h and working years during12-18 months were protective factors for WMSD of online delivery staff (OR=0.175, 95%CI 0.052-0.581; OR=0.152, 95%CI 0.040-0.567) . Conclusion: The high incidence of WMSD for online delivery staff in the catering industry is mainly related to HAV, daily riding time and working years. Researchers need to strengthen the research on the transportation, helmets and other work equipment and task arrangements of online delivery staff in order to improve the labor safety of online delivery staff.