ACED Oral Presentation June 3 (Sat)
G3-2 Assessment of Risk Factors of Upper-limb Musculoskeletal Disorders in a Chicken Slaughterhouse
2017 年 53 巻 Supplement2 号 p. S458-S461
詳細
2017 年 53 巻 Supplement2 号 p. S458-S461
Brazil is the world's leading poultry meat exporter since 2004. The poultry slaughtering workers are exposed to risk factors for work-related upper limb musculoskeletal disorders, such as repetitiveness, high frequency of technical actions, forceful exertions, inadequate posture, insufficient time for recovery, use of tools and exposure to cold temperatures. The aim of this study was to evaluate the risks associated with the repetitive movements of upper limbs in different tasks performed in a poultry slaughterhouse. In the poultry slaughterhouse 1,200 workers slaughtered 100,000 chickens per day during two work shifts. Ten percent of the company's employees were evaluated during the execution of work tasks, using the OCRA Checklist method. Each worker was filmed for a period of 5 minutes. The Student t-test (SPSS 17.0) was used, adopting p≤0.05, in order to compare the risk variable between the sides of the body. The 30 work activities analyzed were from the following sectors: packing (n=12); cutting (n=11); evisceration (n=3); reception (n=2); chiller (n=1); and freezing tunnels (n=1). The average of occupational repetitive actions performed by poultry workers was 64.4±16.1 per minute, representing 9 points in the OCRA's scale (0 to 10 points scale). The average score of OCRA's checklist of all the workstations analyzed was 22.7±5.6 points (moderate risk). The Checklist scores for the right upper limbs (average 22.5 - moderate risk) were significantly higher (p = 0.033) than the left upper limbs (mean of 21.7 - moderate risk), representing a higher risk for the right side of the body. Considering the five risk categories proposed by the OCRA Method, 11 work tasks (37%) were considered high risk, and 19 (63%) presented moderate risk. It is concluded that the majority of the slaughterhouse workers were vulnerable to ergonomic hazards by repetitive movements and to a greater probability of developing upper limb work-related musculoskeletal disorders (>21.5% probability for high risk and 10.8 to 21.5% for moderate risk).
