Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture
Introduction: Manual lifting operations continue to play a key role in the industrial and service sectors, inflicting physical strain on the musculoskeletal system, despite advances in automation. As a result, an experiment is carried out to assess the impact of two lifting task parameters; weight...
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| Format: | Article |
| Language: | English |
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Occupational Health and Safety Society of Nepal
2022-06-01
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| Series: | International Journal of Occupational Safety and Health |
| Subjects: | |
| Online Access: | https://www.nepjol.info/index.php/IJOSH/article/view/40903 |
| _version_ | 1818107494581403648 |
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| author | Anurag Vijaywargiya Mahesh K Bhiwapurkar A. Thirugnanam |
| author_facet | Anurag Vijaywargiya Mahesh K Bhiwapurkar A. Thirugnanam |
| author_sort | Anurag Vijaywargiya |
| collection | DOAJ |
| description |
Introduction: Manual lifting operations continue to play a key role in the industrial and service sectors, inflicting physical strain on the musculoskeletal system, despite advances in automation. As a result, an experiment is carried out to assess the impact of two lifting task parameters; weight and height, based on the estimation of subjective responses and biomechanical loading, while lifting the weight symmetrically in the sagittal plane. Also to recommend the safe limit for manual lifting tasks.
Methods: Twelve volunteer male students in the age group of 21 to 26 years performed lifting tasks from floor to 5 different heights (below the knee to ear level), with 5 different weights (10 to 20 kg) using free-style lifting techniques. The load pan with no handle was used for lifting weight, which is typically adopted in the Indian building construction field. The subjective estimate was obtained using workload assessment by body discomfort chart. The biomechanical loading (loading rate) for each lifted weight and height was collected using a force platform.
Results: The results showed that heavier weights produced higher stresses than lower weights. The loading rate was found to be almost similar at waist or knee level. The loading rate was observed to be linearly increasing after waist level. The overall workload rating seems to be a good correlate with the mean loading rate to some extent.
Conclusion: It is proposed to keep the maximum acceptable lifting weight from floor to knee, up to the ear level is 15 kg, to prevent any musculoskeletal or chronic injury.
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| first_indexed | 2024-12-11T02:00:22Z |
| format | Article |
| id | doaj.art-1ab4137ed1f442d8bd8c77ba97d476d1 |
| institution | Directory Open Access Journal |
| issn | 2738-9707 2091-0878 |
| language | English |
| last_indexed | 2024-12-11T02:00:22Z |
| publishDate | 2022-06-01 |
| publisher | Occupational Health and Safety Society of Nepal |
| record_format | Article |
| series | International Journal of Occupational Safety and Health |
| spelling | doaj.art-1ab4137ed1f442d8bd8c77ba97d476d12022-12-22T01:24:30ZengOccupational Health and Safety Society of NepalInternational Journal of Occupational Safety and Health2738-97072091-08782022-06-0112310.3126/ijosh.v12i3.40903Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric PostureAnurag Vijaywargiya0Mahesh K Bhiwapurkar1A. Thirugnanam2Mechanical Engineering Department, OP Jindal University,Punjipathra, Raigarh, IndiaMechanical Engineering Department, OP Jindal University,Punjipathra, Raigarh, IndiaBiotechnology & Medical Engineering, National Institute of Technology, Rourkela, India Introduction: Manual lifting operations continue to play a key role in the industrial and service sectors, inflicting physical strain on the musculoskeletal system, despite advances in automation. As a result, an experiment is carried out to assess the impact of two lifting task parameters; weight and height, based on the estimation of subjective responses and biomechanical loading, while lifting the weight symmetrically in the sagittal plane. Also to recommend the safe limit for manual lifting tasks. Methods: Twelve volunteer male students in the age group of 21 to 26 years performed lifting tasks from floor to 5 different heights (below the knee to ear level), with 5 different weights (10 to 20 kg) using free-style lifting techniques. The load pan with no handle was used for lifting weight, which is typically adopted in the Indian building construction field. The subjective estimate was obtained using workload assessment by body discomfort chart. The biomechanical loading (loading rate) for each lifted weight and height was collected using a force platform. Results: The results showed that heavier weights produced higher stresses than lower weights. The loading rate was found to be almost similar at waist or knee level. The loading rate was observed to be linearly increasing after waist level. The overall workload rating seems to be a good correlate with the mean loading rate to some extent. Conclusion: It is proposed to keep the maximum acceptable lifting weight from floor to knee, up to the ear level is 15 kg, to prevent any musculoskeletal or chronic injury. https://www.nepjol.info/index.php/IJOSH/article/view/40903Manual Material HandlingConstruction WorkerLoading RateWorkload Assessment. |
| spellingShingle | Anurag Vijaywargiya Mahesh K Bhiwapurkar A. Thirugnanam Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture International Journal of Occupational Safety and Health Manual Material Handling Construction Worker Loading Rate Workload Assessment. |
| title | Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture |
| title_full | Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture |
| title_fullStr | Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture |
| title_full_unstemmed | Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture |
| title_short | Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture |
| title_sort | ergonomics evaluation of manual lifting task on biomechanical stress in symmetric posture |
| topic | Manual Material Handling Construction Worker Loading Rate Workload Assessment. |
| url | https://www.nepjol.info/index.php/IJOSH/article/view/40903 |
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