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Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage
BACKGROUND: Firefighters are required to carry self-contained breathing apparatus (SCBA), which increases the risk of musculoskeletal disorders. This study assessed the newly recruited firefighters’ internal forces and potential musculoskeletal disorders when carrying SCBA. The effects of SCBA strap...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Occupational Safety and Health Research Institute
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9482047/ https://www.ncbi.nlm.nih.gov/pubmed/36156858 http://dx.doi.org/10.1016/j.shaw.2022.03.009 |
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author | Wang, Shitan Wang, Yunyi |
author_facet | Wang, Shitan Wang, Yunyi |
author_sort | Wang, Shitan |
collection | PubMed |
description | BACKGROUND: Firefighters are required to carry self-contained breathing apparatus (SCBA), which increases the risk of musculoskeletal disorders. This study assessed the newly recruited firefighters’ internal forces and potential musculoskeletal disorders when carrying SCBA. The effects of SCBA strap lengths were also evaluated. METHODS: Kinematic parameters of twelve male subjects running in a control condition with no SCBA equipped and three varying-strapped SCBAs were measured using 3D inertial motion capture. Subsequently, motion data and predicted ground reaction force were inputted for subject-specific musculoskeletal modeling to estimate joint and muscle forces. RESULTS: The knee was exposed to the highest internal force when carrying SCBA, followed by the rectus femoris and hip, while the shoulder had the lowest force compared to the no-SCBA condition. Our model also revealed that adjusting SCBA straps length was an efficient strategy to influence the force that occurred at the lumbar spine, hip, and knee regions. Grey relation analysis indicated that the deviation of the center of mass, step length, and knee flexion-extension angle could be used as the predictor of musculoskeletal disorders. CONCLUSION: The finding suggested that the training of the newly recruits focuses on the coordinated movement of muscle and joints in the lower limb. The strap lengths around 98-105 cm were also recommended. The findings are expected to provide injury interventions to enhance the occupational health and safety of the newly recruited firefighters. |
format | Online Article Text |
id | pubmed-9482047 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Occupational Safety and Health Research Institute |
record_format | MEDLINE/PubMed |
spelling | pubmed-94820472022-09-22 Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage Wang, Shitan Wang, Yunyi Saf Health Work Original Article BACKGROUND: Firefighters are required to carry self-contained breathing apparatus (SCBA), which increases the risk of musculoskeletal disorders. This study assessed the newly recruited firefighters’ internal forces and potential musculoskeletal disorders when carrying SCBA. The effects of SCBA strap lengths were also evaluated. METHODS: Kinematic parameters of twelve male subjects running in a control condition with no SCBA equipped and three varying-strapped SCBAs were measured using 3D inertial motion capture. Subsequently, motion data and predicted ground reaction force were inputted for subject-specific musculoskeletal modeling to estimate joint and muscle forces. RESULTS: The knee was exposed to the highest internal force when carrying SCBA, followed by the rectus femoris and hip, while the shoulder had the lowest force compared to the no-SCBA condition. Our model also revealed that adjusting SCBA straps length was an efficient strategy to influence the force that occurred at the lumbar spine, hip, and knee regions. Grey relation analysis indicated that the deviation of the center of mass, step length, and knee flexion-extension angle could be used as the predictor of musculoskeletal disorders. CONCLUSION: The finding suggested that the training of the newly recruits focuses on the coordinated movement of muscle and joints in the lower limb. The strap lengths around 98-105 cm were also recommended. The findings are expected to provide injury interventions to enhance the occupational health and safety of the newly recruited firefighters. Occupational Safety and Health Research Institute 2022-09 2022-03-28 /pmc/articles/PMC9482047/ /pubmed/36156858 http://dx.doi.org/10.1016/j.shaw.2022.03.009 Text en © 2022 Occupational Safety and Health Research Institute https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Wang, Shitan Wang, Yunyi Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title | Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title_full | Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title_fullStr | Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title_full_unstemmed | Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title_short | Musculoskeletal Model for Assessing Firefighters’ Internal Forces and Occupational Musculoskeletal Disorders During Self-Contained Breathing Apparatus Carriage |
title_sort | musculoskeletal model for assessing firefighters’ internal forces and occupational musculoskeletal disorders during self-contained breathing apparatus carriage |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9482047/ https://www.ncbi.nlm.nih.gov/pubmed/36156858 http://dx.doi.org/10.1016/j.shaw.2022.03.009 |
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