| Objective: In order to understand the front-line coal miners’ health effects of occupation burnout and MSDs,a questionnaire survey was conducted to analyse the status quo and influence factors of occupation burnout and MSDs among coal miners,to discuss the relationship between occupation burnout and musculoskeletal disorders,and provide scientific basis for the protection of their physical and mental health.Methods:Conduct the survey by using the job burnout scale,the brief occupational stress questionnaire and the musculoskeletal disorders scale among 1500 front-line coal miners selected in stratified cluster random sampling method across Xinjiang.Results: 1)The survey released 1500 questionnaires,total number of valid return was 1325,and the valid usable return rate was 88.33%.2)Result of occupation burnout: In this survey,the detection rate of job burnout of front-line coal miners was 90%,among which mild burnout accounted for about 39.8%,moderate burnout accounted for 43.8%,severe burnout accounted for about 6.4%,and job burnout average score was 50.77±11.93;Occupational burnout scores and hierarchical differences of coal miners with different gender,seniority,education background and shift system were statistically significant(P< 0.05),occupational burnout score of male was higher than female,working age of 20 years or more scored the highest,coal miners with high education background scored the lowest and those with two shifts scored the highest;job demand and autonomy under JDC mode had positive impact on occupational burnout(P < 0.05);peer support had negative effect on occupational burnout(P < 0.05);men were more likely to have occupational burnout than women;risk of having moderate or severe occupational burnout of two shifts workers,was 2.271 times higher than the fixed day shift workers;reward under ERI model had a negative impact on job burnout(P < 0.05);work on two shifts are more likely to have occupational burnout compared to those with fixed day shift(P < 0.05).3)MSDs result: MSDs prevalence rate of coal miners was 65.6%,body part with the highest annual prevalence rate was waist(50.7%),followed by neck,shoulders,knees,the lowest was elbow(18.8%);among causes of sick leave,waist accounted for the largest proportion(25.7%),wrist accounted the smallest(13.4%);the incidence of MSDs and OR values increased with the working age,the OR value scored 1.613 with those of over 20 years working age;among the shift system,‘three shifts shift twice’ had the lowest incidence of MSDs;by using logistic regression analysis and controlling confounding factors,adjusted OR value of amplitude bend down reached 2.723,adjusted OR value of long time with frequently slight bend down was 2.048,the neck forward was 2.967,the maximum operating force in short period of time reached 2.655,the upper limb in forceful use was 2.443,the adjusted OR values of hold objects and manipulate tools vigorously were 2.068 and 2.116.The adjusted OR value of postural discomfort caused forceless,unsupported,slipped or fall at times,adjustments caused by coldness or temperature changes all reached over 2.Shortage of staff,constant working overtime were risk factors of MSDs and their OR values were respectively 2.817,2.392,occupational burnout is one of the risk factors of MSDs,severe occupational burnout was the risk factor of MSDs for coal miners,their prevalence risk was 2.53 times of zero burnout workers;ratio of job demand-autonomy,effort-reward were risk factors of MSDs.4)The multivariate logistic regression equation of MSDs pointed out that amplitude bend down,neck forward,the maximum operating force in short period of time,repetition of upper arm and fingers,slipped or fall at times,work related to coldness or temperature changes were risk factors for MSDs among coal miners.Occupational burnout also had certain affects on the coal miners’ MSDs,support of superiors was a protective factor of MSDs,support of peers was a risk factor of MSDs,‘three shifts shift twice’ within shift system protected the MSDs relative to the fixed day shift.Conclusion:1)Relevance ratio of front-line coal miners occupational burnout is higher.Male occupational burnout scores is higher than female,working age of 20 years or more scored the highest,coal miners with high education background scored the lowest and those with two shifts scored the highest.2)Shift system,job demand,job autonomy,peers support,reward are key factors for coal miners’ occupational burnout.3)Front-line coal miners have high prevalence rate on MSDs,which must be taken seriously.Women have higher prevalence rate on MSDs in neck and waist.Prevalence rate of MSDs on parts of body increased with the working age,prevalence rate of MSDs on neck differed from different education background,different shift system also has impact on the MSDsprevalence rate of coal miners’ wrists and knees.4)Shift system,working age,amplitude bend down,neck forward,the maximum operating force in short period of time,repetition of upper arm and fingers,slipped or fall at times,work related to coldness or temperature changes sharp bend,neck forward,do a short period of time the maximum force operation,upper arm or finger repetitive movements,sometimes the foot slipping or falling to cold or temperature changes,Occupational burnout,supervisor’s support,peers’ support are the main influence factors of the coal miners’ MSDs.5)Occupational burnout is a risk factor for MSDs of coal miners,proper intervention would benefit them both physically and mentally. |
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