The objective of this study was to quantify and assess whether lifting tasks in the workplace are a risk factor in lumbar spondyloarthrosis etiology. A case-control study was performed with 231 workers, 18-55 years old, insured by the Mexican Social Security Institute (IMSS, according to its designation in Spanish). A multivariate analysis using conditional logistical regression showed that lifting tasks, combined with driving tasks, are associated with this illness (OR = 7.3; 95% CI 1.7-31.4). The daily frequency of lifting as it interacts with work as a driver resulted in a greater risk (OR = 10.4; 95% CI 2.0-52.5). The load weight, daily task-hours and cumulative time showed a dose-response relationship. The attributable risk for lifting tasks was 0.83, suggesting that 83% of lumbar spondyloarthrosis development could be prevented if risk factors were eliminated by ergonomic redesign of the task.
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J Agromedicine
January 2025
Department of Occupational Health Engineering and Ergonomics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Objective: Farming tasks often involve repetitive movements, heavy lifting, awkward postures, and prolonged periods of standing or bending, all of which can contribute to the development of musculoskeletal issues (MSDs) such as back pain, joint pain, and muscle strains. The consequences include decreased work time, disability, and increased financial costs. Various ergonomic risk evaluation techniques have been created for industrial fields, but there is a shortage of specific techniques for farming occupations.
View Article and Find Full Text PDFJ Appl Biomech
January 2025
Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
Repetitive manual labor tasks involving twisting, bending, and lifting commonly lead to lower back and knee injuries in the workplace. To identify tasks with high injury risk, we recruited N = 9 participants to perform industry-relevant, 2-handed lifts with a 11-kg weight. These included symmetrical/asymmetrical, ascending/descending lifts that varied in start-to-end heights (knee-to-waist and waist-to-shoulder).
View Article and Find Full Text PDFPeerJ
January 2025
Department of Orthopedics, Xuanwu Hospital Capital Medical University, Beijing, China.
Background: Lifting is generally considered as a risk factor for low back pain. A thorough investigation of the muscle function during lifting is essential for a better assessment of the potential risk of muscle impairment and towards improvements in lifting strategy. We aimed to compare the activities of the trunk muscles between the stoop and the squat lifting tasks.
View Article and Find Full Text PDFDisabil Rehabil Assist Technol
January 2025
Neurorehabilitation Engineering and Assistance Systems Research (NEAR), School of Mechanical Engineering, Universiti Sains Malaysia, Penang, Malaysia.
Work-related musculoskeletal disorders (WMSDs) during bed-to-wheelchair and wheelchair-to-commode transfers are a significant concern, yet prior assessments often focused on specific subtasks, overlooking potential cumulative risks. This study employed Xsens Inertial Measurement Units (IMUs) and force plates integrated with an automated Rapid Entire Body Assessment (REBA) system to provide a continuous and comprehensive evaluation of WMSDs risks associated with the use of a walking belt and a floor lift. The continuous assessment revealed peak REBA scores ranging from 8.
View Article and Find Full Text PDFSensors (Basel)
December 2024
National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA.
The American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values (TLVs) for lifting provides risk zones for assessing two-handed lifting tasks. This paper describes two computational models for identifying the lifting risk zones using gyroscope information from five inertial measurement units (IMUs) attached to the lifter. Two models were developed: (1) the ratio model using body segment length ratios of the forearm, upper arm, trunk, thigh, and calf segments, and (2) the ratio + length model using actual measurements of the body segments in the ratio model.
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