Associations of musculoskeletal disorders with occupational stress and mental health among coal miners in Xinjiang, China: a cross-sectional study

Abstract

Background Musculoskeletal disorders (MSDs), a common type of occupational diseases, have become the main cause of absenteeism and early retirement in the occupational population, as well as a major risk factor for occupational disability. The purpose of this study was to investigate the effects of occupational stress and mental health on MSDs in coal miners in Xinjiang, China, to provide a theoretical basis for reducing the incidence of MSDs in coal miners and improving their physical and mental health. Methods In this study, stratified cluster random sampling was used to randomly select six coal mining companies in Xinjiang, and 1675 coal miners were surveyed by questionnaire. The status of occupational stress, mental health and MSDs among coal miners was investigated by means of the Effort–Reward Imbalance questionnaire (ERI), Symptom Checklist-90(SCL-90), and Musculoskeletal disorders scale (MSDs) questionnaire. Results The prevalence of MSDs among coal miners was higher, and there were statistical differences among different sexes, ages, working years, shifts, types of work, educational level and monthly income (P < 0.001). The prevalence of MSDs in different body parts in the occupational stress group and mental disorder group was higher than that in the normal group. The results of multivariate logistic regression analysis showed that females had an increased risk of developing MSDs (OR = 2.23, 95% CI.:1.50,3.33). The risk of MSDs was higher with age < 30 years (30-39 years,OR = 2.39, 95% CI.,1.68,3.40; 40-49 years,OR = 2.15, 95% CI.:1.52,3.04; 50-60 years:OR = 3.25, 95% CI.:2.09,5.07), and the longer the working years, the higher the risk of MSDs (OR = 1.90, 95% CI.:1.38,2.62). The two shifts group (OR = 2.18, 95% CI.:1.59,2.98) had an increased risk of developing MSDs compared with the fixed day shift group. The risk of MSDs was lower in heading drivers (OR = 0.41, 95% CI.:0.29,0.60,) and transport workers (OR = 0.30, 95% CI.:0.20,0.43). The higher the education level, the lower the risk of MSDs (high school: OR = 0.46, 95% CI.:0.34,0.62, junior college and above: OR = 0.12, 95% CI.:0.08,0.17), and the higher the monthly income, the lower the risk of MSDs (OR = 0.50, 95% CI.:0.34,0.74). Occupational stress (OR = 1.32, 95% CI.:1.05,1.67) and mental disorder(OR = 2.94, 95% CI.:2.25,3.84) increased the risk of MSDs. A Bayesian network diagram showed that occupational stress and MSDs have direct effects on mental disorders, and occupational stress can have indirect effects on mental disorders through MSDs. Conclusion Our research shows that MSDs are common among coal miners. Occupational stress and psychological disorders can increase the incidence of MSDs.

Analysis of occupational stress and its correlation with oxidative-antioxidant levels among employees of a power grid enterprise in Guangdong

“…As a significant occupational health problem related to personal physical and mental health as well as work efficiency, occupational stress, also regarded as job strain or work stress, is the status of long-term exposure to occupation-related stressors that affect overall health [ 2 , 3 ]. Long-term occupational stress not only causes mental and psychological problems, such as anxiety, depression, and burnout [ 4 , 5 ], but also increases the risk of coronary heart disease, skeletal muscle disease, and other physical diseases [ 6 , 7 ], which leads to a decrease in job satisfaction [ 8 ], turnover tendency [ 9 ] and sickness absence rate of the occupational population [ 10 ]. Focusing on stressors and taking measures to reduce occupational stress in occupational populations can improve the physical and mental health of employees [ 2 ] but also lead to higher economic benefits in terms of increased productivity through reduced absenteeism [ 11 ].…”

Risk Factors of Musculoskeletal Disorders in Office Workers

“…Enhancement of stress can increase the relationship between physical workload and musculoskeletal symptoms (AlOmar et al, 2021). It can also cause the release of norepinephrine and epinephrine, which leads to abnormal changes in heart rate and systolic blood pressure, thereby affecting muscle activity (Li et al, 2021). Da Silva, da Silva and Gontijo (2017) examined footwear industry workers in Brazil, where stress and job dissatisfaction were the most influential psychosocial factors of MSDs complaints.…”

Nghiên Cứu Thực Trạng Rối Loạn Cơ Xương Khớp Của Bộ Đội Công Binh Thi Công Công Trình Ngầm

“…The main position of MSD is neck 1 Trung tâm Nội dã chiến -Bệnh viện Quân y 103 2 Học viện y học cổ truyền Việt Nam 3 Đại học Y dược Huế Chịu trách nhiệm chính: Hồ Tú Thiên Email: hotuthien1234@gmail.com Ngày nhận bài: 20.4.2022 Ngày phản biện khoa học: 14. 6.2022 Ngày duyệt bài: 22. 6.2022 (24%), shoulder (23%), upper back (26%), lower back (23%).…”

“…6.2022 Ngày duyệt bài: 22. 6.2022 (24%), shoulder (23%), upper back (26%), lower back (23%). Soldiers aged ≥40 years old had a 1.6 times higher risk of MSD than the group <30 years old, and an adverse working posture had a 1.27 times higher risk of MSD compared with the non-adverse posture group.…”

“…Sự khác nhau này có ý nghĩa thống kê với p<0,05 và nguy cơ RLCXK ở nhóm 3 cao hơn nhóm 1 là 1,6 lần (OR=1,6). Theo nghiên cứu của Xue Li và cộng sự (2021)[6] về tỉ lệ RLCXK của công nhân khai thác than ở hầm mỏ cho thấy tuổi càng cao tỉ lệ RLCXK càng lớn, công nhân có tuổi đời dưới 30 tuổi có RLCXK là thấp nhất với 34%, và cao nhất là 50-60 tuổi với 74,3%.Theo bảng 3.5 chúng tôi nhận thấy: các quân nhân có tư thế làm việc hợp lý, có tỉ lệ RLCXK là thấp nhất 78,8%, các quân nhân làm việc ở tư thế bất lợi cần điều chỉnh tỉ lệ RLCXK lên đến 100%, nguy cơ RLCXK ở nhóm tư thế bất lợi cao hơn nhóm không bất lợi 1,27 lần. Tỉ lệ này có phần cao hơn nghiên cứu của Mallapiang và cộng sự(2021)…”