Prevalence and influencing factors of work-related musculoskeletal disorders among workers in chemical pharmaceutical industry / 环境与职业医学

Background Work-related musculoskeletal disorders (WMSDs) are one of the major occupational health problems in the world. Pharmaceutical industry is an important part of China's national economy. At present, there are few related studies reported at home and abroad. Objective To investigate the status and influencing factors of WMSDs in chemical pharmaceutical industry. Methods A cross-sectional epidemiological survey was conducted among all workers from three chemical pharmaceutical enterprises in Guangzhou. The Musculoskeletal Disorders Questionnaire was used to collect information on demographic characteristics, symptoms of musculoskeletal disorders, types of work, work organization, and and work postures. Multiple logistic regression method was used to analyze the risk factors of WMSDs in chemical pharmaceutical workers. Results In this study, 563 workers were selected as subjects. The total prevalence rate of WMSDs symptoms in the chemical pharmaceutical workers was 43.9% (247/563), and the leading body part-specific prevalence rate from high to low was 34.3% in the lower back, 24.3% in the upper back, 24.0% in the shoulders, and 23.8% in the neck. The prevalence rate of WMSDs symptoms in multiple body parts (30.0%) was 2.16 times higher than that in single body part (13.9%), and the prevalence rate of WMSDs symptoms in four body parts was the highest (11.4%). The results of multiple logistic regression analysis showed that age ≥50 years (reference age <30 years) (OR=2.140, 95%CI: 1.054-4.345), often or very often (reference never/rarely) long-time head rotating (OR=2.695, 95%CI: 1.753-4.142) and long-time keeping arms above shoulders (OR=1.902, 95%CI: 1.108-3.265) increased the risk of reporting WMSDs symptoms (P<0.05). Regarding education level, workers with high school and technical secondary school (OR=0.333, 95%CI: 0.175-0.636) or college and above (OR=0.413, 95%CI: 0.216-0.790) education had a lower risk of reporting WMSDs symptoms than those with middle school or below (P<0.05). Conclusion The prevalence rate of reporting WMSDs symptoms in chemical pharmaceutical industry is high, the involving body parts are lower back, upper back, shoulders, and neck, and reporting simultaneous occurrence of WMSDs symptoms in multiple body parts is common. The chemical pharmaceutical manufacturers can reduce the risk of WMSDs by strengthening the training on workers' ergonomics knowledge, paying attention to the less educated personnel, protecting the elderly workers, and avoiding awkward work postures, like rotating head for a long time and raising arms over shoulders.

Work-related musculoskeletal disorders and their influencing factors among workers in a furniture factory / 环境与职业医学

Background Furniture manufacturing is one of the typical labor-intensive industries, and workers in this industry face a high risk of work-related musculoskeletal disorders (WMSDs), which seriously affect the physical and mental health of workers. Objective To explore the prevalence and potential risk factors of WMSDs among workers in a large-scale furniture manufacturing factory. Methods A cross-sectional study of 3431 workers in a furniture factory in Guangdong Province was conducted from September to December 2019. Information including reported WMSDs in various body parts in the past year, demographic characteristics, work organization factors, job characteristics, and work postures was collected by an electronic version of Musculoskeletal Disorders Questionnaire. Pearson χ2 test and binary logistic regression were used to analyze the risk factors leading to WMSDs. Results The overall prevalence rate of WMSDs was 32.12% (1102/3431). The most common WMSDs symptoms occurred in the neck (16.85%), followed by the feet (15.27%), shoulders (14.81%), and hands (14.25%). The prevalence rates of WMSDs in the neck, shoulders, elbows, hands, legs, and feet were significantly different among different types of work (P<0.05). The results of multiple logistic regression analysis showed that individual factors, work organization factors, job characteristics, and awkward work postures were associated with the frequency of reporting WMSDs in specific parts of workers. Comparatively poor physical health (including moderate, poor, and very poor) was positively correlated with neck, shoulder, hand, and foot WMSDs (OR=1.479-4.077); working with an uncomfortable posture (OR=1.983) and doing the same task almost every day (OR=1.783) were positively correlated with neck pain; doing the same task almost every day (OR=2.408) and neck twisting for a long time (OR=1.830) were positively correlated with shoulder pain; bending wrists up and down frequently (OR=1.948) and bending wrists for a long time (OR=2.081) were positively correlated with hand pain; prolonged standing (OR=1.953) and often working overtime (OR=1.627) were positively correlated with feet pain; sufficient rest time was negatively correlated with WMSDs in the neck, shoulders, hands, and foot (OR=0.544-0.717). Conclusion The prevalence rate of WMSDs in furniture manufacturing workers is relatively high, and neck, feet, shoulders, and hands are the most involved body parts. The frequency of reporting WMSDs is related to individual factors, work organization factors, job characteristics, and awkward work postures.

Factors Associated with Work-related Musculoskeletal Disorders Risk among Bamboo Craftsman in Mojorejo Village, Ponorogo Indonesia

@#Introduction: Work-related Musculoskeletal disorders (WMSDs) becomes the one of most-occupational problem and highly related to the individual and work factors. Eighty percent (80%) workers in the woven bamboo industry in Mojorejo Village dominated by middle aged workers (>40 years) that most of their producing activities are manually handled, without using machine or modern technology. Incompatibility work station, long working hours and repeated movement aggravated the WMSDs risk. This study aims to describe the WMSDs risk and determine its factors based on individual characteristics. Methods: There are 58 workers as respondents in this cross-sectional study. Data were collected and analyzed using quantitative method. Posture Exposure (PE) were measured using the QEC instrument. While the WMSDs risk were measured using PLIBEL. Individual factors (PE, Age, Working Period) related to WMSDs were analyzed using Multinomial Logistic Regression (95% CI). The Chi-square test were also used to compare PE rates among WMSDs risk levels. Results: Most respondents (48.3%) with 51-70% PE rate have a high level of WMSDs risk. While 27 % respondents with PE rate >70% have a very high level. The neck is the region most exposed to the WMSDs (score 15.5/very high level risk). PE rate is the only factor that significantly related to WMSDs risk (sig. = 0.043; Rsquare = 0.529; r =0.703). While the age and working period has no significant correlation (Sig = 0.859 and 0.851 respectively). Conclusion: Based on the result, immediate improvement required to be implemented. It is suggested to redesigned work stations adjusted to the workers posture and position.

Influencing factors for work-related musculoskeletal disorders among assembly workers in four manufacturing enterprises / 环境与职业医学

Background The prevalence rate of work-related musculoskeletal disorders (WMSDs) among manufacturing workers is relatively high and has been widely concerned. However, research on the prevalence and risk factors of multi-site WMSDs is still insufficient. Objective To explore the prevalence and risk factors of multi-site WMSDs of assembly workers in four manufacturing enterprises. Methods The "Chinese Musculoskeletal Questionnaire" was used to conduct a cross-sectional survey among 1401 assembly workers selected by convenient sampling in four manufacturing enterprises, and their demographic characteristics, the prevalence of WMSDs in various body parts, and the information about biomechanical factors, work organizations, work environment, and psychosocial factor exposure were collected. The prevalence of WMSDs and multi-site WMSDs were estimated, Pearson χ2 test was used for univariate analysis of multi-site WMSDs risk factors, and logistic regression was used for multi-factor analysis. Results The total prevalence rate of WMSDs was 54.9% (769/1 401). The top three affected sites were neck (41.4%), shoulders (30.7%), and wrist/hand (25.1%). The prevalence rate of multi-site WMSDs was 41.9% (587/1 401). The prevalence rates of multi-site WMSDs in railway vehicle assembly and riveting workers were higher than those in electronic parts processing and glass manufacturing workers (P<0.001). The results of logistic regression analysis showed that individual factors such as female (OR=2.09, 95%CI: 1.48−2.97) and drinking (OR=1.52, 95%CI: 1.05−2.18), biomechanics factors such as keeping head down for a long time (OR=1.37, 95%CI: 1.22–1.53), keeping bending frequently (OR=1.18, 95%CI: 1.03–1.34), and keeping arms up for a long time (OR=1.25, 95%CI: 1.10–1.41), work organizational factors such as electronic parts processing, railway vehicle assembly, and riveting (OR values were 3.23, 5.70, and 13.83, respectively), environmental factors such as temperature a little cold (OR=4.84, 95%CI: 1.90–12.37), noise seriously affecting work (OR=2.25, 95%CI: 1.23–4.11), and psychosocial factors such as high job demands (OR=1.47, 95%CI: 1.04–2.08), fatigue after work (OR=1.92−2.61) were risk factors of multi-site WMSDs. Conclusion The prevalence rate of multi-site WMSDs in assembly workers is high, and the main influencing factors include individual factors, awkward work postures, environmental factors, and psychosocial factors.

Correlation Between Posture of Job and Musculoskeletal Disorders Complains Among Emergency Departement Nurses in General Hospital Distric of Tangerang City

@#Introduction: Based on World Health Organization (WHO) incidence of musculoskeletal diseases is estimated to reach 60.4% of all occupational illness. Research conducted in the UK and Hongkong on nurses reported lower stage pain of 38% and 39% and some neck pain 34% and 31% respectively. Musculoskeletal disorders are basically complaints of pain in parts of our body that include muscles, joints, ligaments, skeletons, and nerves. Work posture is one of the factors that influence the increase in musculoskeletal disorders. The objective of the research is to identify correlation between posture at job with musculoskeletal disorders complaints in the emergency department among nurses. Methods: The Method of the research was a quantitative research using cross sectional methods with Spearmen Rho correlation statistic test and the sampling method used total sampling. The sample size in this study was 40 nurses in the Emergency Department. Data collection was conducted by using Nordic Body Maps questionnaire to assess Musculoskeletal Disorder and posture of job assessment was carried out by Rapid Entire Body Assessment (REBA). Results: The results from this study showed that half of respondents (50%) were 26-30 years old, more than half (67%) of respondents are male, more than half (60%) have very high risks due to posture of job, and more than half (55%) had heavy complaints. Conclusion: There was a correlation between job posture with musculoskeletal disorders.

Correlation Between Length of Work and Work Posture With Low Back Pain Complaint among Back Office Employees at X Hospital Serpong District, South Tangerang, Indonesia

@#Introduction: Low Back Pain (LBP) is an occupational disease that is often the main cause of disability, thus affecting the work and general welfare of LBP sufferers. The objective of the present study is to determine the correlation between length of work and work posture with complaints of LBP among back-office employees at X Hospital. Method: The design of this study was a descriptive analysis, with cross-sectional study design, by total sampling technique for 44 back-office employees. Work posture risk assessment uses the Ovako Working posture Assessment System (OWAS) method and LBP complaints are measured using the Modified Oswestry Low Back Pain Disability Questionnaire. Results: Most respondents experienced LBP complaints in the moderate disability category, and 40 people (90,9%) needed to improve their work posture. Spearman correlation statistical test results showed there was a relationship between age (p-value =0,000), the length of work (p-value = 0,000), work posture (p-value = 0,009) with LBP complaints on back-office employees. Conclusion: Providing work facilities with ergonomic chairs and tables position and doing stretching in between work hours can reduce LBP complaints.

Avaliação da postura e posições de trabalho do cirurgião-dentista destro e da auxiliar odontológica em procedimentos restauradores / Evaluation work of posture and positions of the right hand dentist and chairside assistant in restorative procedure

O presente estudo analisa a postura e posições do cirurgião-dentista destro e da auxiliar odontológica, bem como a posição da cabeça do paciente, para restaurações em amálgama e resina composta, usando os princípios ergonômicos no trabalho. As observações foram realizadas nos dentes anteriores e posteriores, tanto na maxila como na mandíbula. Para atingir este objetivo, para todas as restaurações realizadas, foram registrados fotograficamente: a) a postura e as posições para o cirurgião-dentista destro; b) a postura e posições para a auxiliar odontológica; c) o posicionamento da cabeça do paciente; d) a região de apoio das mãos do cirurgião-dentista; e) o afastamento de tecidos moles quando realizado pelo dentista. De acordo com as observações, julga-se oportuno concluir que: a) as posições ideais para o cirurgião-dentista são de 9 e 11 horas; b) a posição ideal para a auxiliar atuar diretamente na boca do paciente é a de 3 horas; c) o posicionamento da cabeça do paciente está diretamente relacionado à região da boca onde está sendo realizada a restauração; d) a mão direita do cirurgião-dentista manteve-se apoiada no polegar esquerdo; a mão esquerda realiza o afastamento de lábios e bochecha

In this study an analysis about the work postura and positions of the right-hand operator and of the chairside assistant was made, as well as the patient's head position, for amalgam and composite restoration using ergonomic principles in the work. The observations were done for anterior and buccal teeth of either the maxilla or the mandible. To reach this objective, for all restorations the following situations were photographed: a) the right hand dentist's posture and positions; b) the chairside assistant's posture and positions; c) the patient's head position; d) the rest position of the operator's hands; e) the separation of the soft tissue when performed by the dentist. According to the observations the following conclusions were drawn: a) the ideal positions for dentist are the 9 and 11 o'clock; b) the ideal position for chairside assistant to operate directly on the patient's mouth is the position of 3 o'clock; c) the positioning of the patient's head is directly associated with the area of the mouth in which it is being performed the restoration; d) the right hand of the dentist had been supported by the left thumb; the left hand separates the lipas and bucca

The Relationship between Work Posture and Cervical Spine Abnormality among Cervicobrachial Disorder Workers in a Microwave-oven Assembling Factory / 예방의학회지

This study conducted to evaluate the association of work posture with cervical spine abnormality toward 106 microwave-oven assemblers. A self-administered questionnaire was used to obtain a general characteristics and a work history of workers. The posture of neck and shoulder joint of workers were measured with video tape recording and the simple X-ray of cervical spine was checked-up to observe the X-ray abnormality including degenerative change, curvature abnormality, disc space narrowing or disc canal narrowing. The result were as follows. 1. The prevalence of degenerative change among cervicobrachial disorder workers was 44.3%(47 persons), curvature abnormality was 43.4%(46 persons), disc space narrowing was 21.7%(23 persons), and disc canal narrowing was 21.7%(23 persons). 2. The prevalence of degenerative change at cervical spine was increased with the degree of neck flexion(flexed versus neutral; odds ratio (OR)=2.7), the total work posture of neck(mild or severe awkward versus neutral; OR=1.2, 3.4). 3. The prevalence of degenerative change at cervical spine was increased with the degree of the right shoulder flexion, the heaviness of the materials carried by the right hand and the degree of awkwardness at the total work posture of right shoulder(p<0.05). 4. There was no evidence of association between curvature abnormality, disc space narrowing, disc canal narrowing and work posture. In conclusion the awkward work posture was related with degenerative change of cervical spine among microwave oven assembling workers and the further study in these field must be made to prove the association objectively.

Cervicobrachial Disorders of Female International Telephone Operators I. Subjective Symptoms / 대한산업의학회지

A questionnaire study was carried out on 290 international telephone operators to find Out their characteristics of musculoskeletal symptoms in relation to work conditions (work posture, work load etc.) and work duration. Results were as follows: 1. The C7-earhole angle, the elbow angle, the left arm abduction angle and the right arm abduction angle all did not meet the recommended criteria and, therefore, seemed to have increased the static load of muscles of the neck, the shoulder and the arms. 2. The prevalence of musculoskeletal complaints was higher in the shoulder and the arms which followed by the neck, the lower hack, the hands and fingers, the hack and the lower limbs. 3. The prevalences of musculoskeletal complaints in the hack and the lower hack increased significantly, as the work duration extended over 5 years. 4. In general, the prevalence of musculoskeletal complaints tended to be lower among habitual exercise group than others. 5. In view of the high prevalence of musculoskeletal complaints even among those with short work experience, it seemed necessary to introduce an adequate control program of cervicobrachial disorders from an early stage of employment.

Cervicobrachial Disorders of Female International Telephone Operaiors II. Muscle Tenderness and Neurological Tests / 대한산업의학회지

Physical examinations including muscle tenderness and neurological tests, were performed on two hundred ninety international telephone operators and their relations with work conditions and subjective symptoms were analyzed. The results obtained were as follows: 1. The prevalence of muscle tenderness was significantly higher in the shoulder and the arms than in other parts of body. 2. No difference of prevalence of muscle tenderness was noted according to the age of workers. 3. The prevalence of muscle tenderness on the shoulder and the arms significantly increased after the work duration of 5 years. 4. Muscle tenderness on the arm, the neck and the shoulder were dominant in the right side. 5. The prevalences of paraesthesia on right shoulder and right arm were higher than those on other parts of body. 6. A significant linear association was noted between the number of tender areas and positive response to questions. 7. The prevalences of positive Spurling test and Morley test were higher in the work duration group of 15 years and more. 8. It seemed that muscle tenderness examination and Morley test were more useful for the diagnosis of cervicobrachial disorders.