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Journal Article


Rodriguez A, Casanova V, Levin JL, Gimeno Ruiz de Porras D, Douphrate DI. J. Agromed. 2019; ePub(ePub): ePub.


University of Texas, School of Public Health in San Antonio , Texas , USA.


(Copyright © 2019, Informa - Taylor and Francis Group)






BACKGROUND: The U.S. logging sector represents is among the most dangerous industrial sectors, with high fatality and non-fatal injury rates. Limited research has addressed work-related musculoskeletal disorders among logging machine operators (LMOs). The purpose of this study was to estimate the 12-month prevalence of musculoskeletal symptoms and the associated work-related risk factors among logging machine operators in the Arkansas, Louisiana, and Texas (Ark-La-Tex) logging region.

METHODS: A self-administered 93-item questionnaire with six different sections: (1) demographics, (2) lifestyle and medical background, (3) work experience, (4) job training, (5) occupational heat-related stress, and (6) occupational injuries and MSS. was administered to logging machine operators (n=88) using Qualtrics Mobile Survey Software®. Poisson regression models were used estimate crude prevalence ratios (PR), adjusted PR [aPR], and corresponding 95% confidence intervals (95% CI).

RESULTS: Regarding organizational, ergonomic, and handling equipment occupational factors and 12-month MSS prevalence, the adjusted model controlled for age, BMI, smoking status, and drinking status. For organizational, the most problematic factors for the lower back were performing a task over and over (63.2%) and working very fast, for short periods (60.0%). For ergonomics, the most problematic factor for the lower extremities was awkward or cramped conditions (58.1%) and for the lower back was bending/twisting back awkward (55.9%). Last, for handling equipment, the most problematic for both the lower back and lower extremities was handling or grasping small objects (57.1%).

CONCLUSION: Our findings revealed associations between work-related MSS and specific job factors (e.g., organizational, ergonomic, handling equipment, etc.), extreme environmental conditions or environmental, and personal risk factors. In particular, study findings suggest lower back and lower extremities MSS are associated with the a majority of job-related risk factors, lower extremities with extreme environmental conditions, and neck and upper back with personal risk factors.

Language: en


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