Working as a refuse collector is a physically strenuous activity. The aim of the investigations in this work was to evaluate the fatigue and subjective complaints of musculoskeletal disorders (MSDs) among refuse collectors. The study involved 27 employees; average age: 32.1 years (SD 3.15), seniority: 2.67 years (SD 1.56). To evaluate fatigue a modified 30-piece questionnaire with a Borg scale was used. MSDs were measured by the Nordic Standardized Questionnaire with the Borg scale. After work, the highest rates of fatigue were reported for the symptoms: "feel thirsty," "give a yawn," "want to lie down," "feel strained in the eyes," "feel a pain in the back," "become drowsy," "feel stiff in the shoulders," "feel heavy in the head" and "have a headache." There was a high intensity of MSDs reported for the body segments "shoulders/upper arms," "lower back," "upper back," "hips/upper legs," "head/neck," "elbows/forearms" and "wrists/hands." Complaints regarding limited mobility due to MSDs at work and outside of work have been observed for the "shoulders/upper arms," "lower back" and "upper back." Refuse collectors complained more about "drowsiness and dullness" than the "projection of physical impairment" and "difficulty in concentration." Discomfort occurred primarily in the upper segments of the body and made staff mobility difficult both at work and after work. The test results can be used in the prevention of fatigue and discomfort. It is recommended to conduct training on the correct ways of performing work and resting and the repair or replacement of faulty containers.
Abstract. The productivity of the workers is affected by the Work-related Musculoskeletal Disorders (WRMSDs) which common cause of health problems, sick leave and it can result in decreased quality of work and increased absenteeism. The objective of this study is to evaluate and investigate the postural workload of sewing machine operators in the assembly of upholstery in furniture factory by using the Ovako Working Posture Analysing System (OWAS) with sampling. The results indicated that posture code 2111 (back code: 2 -bent forward; arms code: 1 -both below the shoulder joint; legs code: 1 -sitting position; load code: -1 less than 10 kg) was the most common working posture rating 38.1%; 63.9% of positions displayed non-neutral back postures and 52% received harmful action categories. The performed assembly tasks have an influence on harmless and harmful action categories. This study is crucial on assembly, and in the future work allows develop a framework for assessment the physical risk of WRMSDs in assembly.
Abstract. In industry work related musculoskeletal disorders (WRMSDs) are still a common problem which frequent cause of health problems, sick leave and it can result in decreased productivity, quality of work and increased absenteeism. Though, traditional manufacturing work practices do not enough take into account task variability issues during the work design -assessment process. Variations in task content and organizational work performance are due to effective use of equipments and reaching high level of productivity. But this variation has impact on work demand and risk to WRMSDs and makes some difficulties with assessment of risk. Therefore, this study aims develop a framework for assessment multipurpose workplaces. The proposed method integrates complementary concepts of widely known techniques used for evaluation of physical risk factors to WRMSDs on workplaces. Additionally the research framework is highlighting major differences in worker's exposure to WRMSDs risk, potential impact on awkward postures, and how these findings can be used for finding solutions in a future ergonomic intervention.
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