Intervention on seat adjustment among drivers of forest tractors |
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| Affiliation: | 1. Kuopio Regional Institute of Occupational Health, Neulaniementie 4, FIN-70700 Kuopio, Finland;2. Finnish Institute of Occupational Health, Topeliuksenkatu 41 a A, FIN-00250 Helsinki, Finland;1. College of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Macromolecular Materials, South China University of Technology, Guangzhou 510641, PR China;2. School of Materials Science & Energy Engineering, Foshan University, Foshan 528000, PR China;1. Medical Image Processing, Analysis and Visualization (MIPAV), School of Electronic and Information Engineering, Soochow University, China;2. State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215000, China;1. Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea;2. School of Spatial Environment System Engineering, Hangdong Global University, 558 Handong-ro, Buk-gu, Pohang, Gyeongbuk 37554, Republic of Korea |
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| Abstract: | The aim of this study was to clarify the ergonomics of forest tractor drivers' sitting conditions, to study how well drivers had adjusted the seats of forest tractors and to study the short-term effect of the backrest adjustment and the use of accessory lumbar support on neck-shoulder and low-back symptoms of drivers. The subjects in this field study were 100 male forest tractor drivers aged 21–50 years (37 ± 7 years) from central and eastern Finland. The drivers were visited twice, and a two-week intervention on seat adjustment was carried out between the visits. The methods used were interview and assessment of the seat. The height and inclination of the seat, inclination of the backrest and the stiffness of the spring were measured; after the measurements, the technician adjusted the seat. Half of the drivers were given an accessory lumbar support (Camp 21025) and advice concerning its use. Pain, stiffness and fatigue of the low-back and neck-shoulder at the end of the shift were reported to have diminished among nearly all drivers. There were no differences between the intervention groups regardless of whether the inclination of the backrest was adjusted or not or whether the drivers had used the lumbar support or not during the two-week intervention period. Relevance to industryThe results of this study can be taken into account when improvements are made in the ergonomics of the seats of forest tractors. |
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