The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis

Most farmworkers in the small and medium Napier industry are using conventional method for harvesting works. Therefore, they are extremely exposed to the risk of low back pain (LBP) disease which is one of the musculoskeletal disorders (MSDs) typical problems. Referring to the Rapid Upper Limb As...

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Main Author:	Mohd Khairul Faizi, Abd Rahman
Format:	Thesis
Language:	English
Subjects:	Napier Napier industry Harvesting works Napier > Perlis Napier harvesting machine
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/2/Full%20text.pdf
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spelling	my-unimap-615422019-08-23T10:23:01Z The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis Mohd Khairul Faizi, Abd Rahman Associates Professor Dr. Hazry Desa Most farmworkers in the small and medium Napier industry are using conventional method for harvesting works. Therefore, they are extremely exposed to the risk of low back pain (LBP) disease which is one of the musculoskeletal disorders (MSDs) typical problems. Referring to the Rapid Upper Limb Assessment (RULA), and Rapid Entire Body Assessment (REBA), conventional harvesting works was highly risk to undergo LBP due to extreme stooped posture and high of low back biomechanical loading. Based on the body score survey result, there were 95% of respondents suffering of LBP. Hence, the objective of this project is to identify proper working posture thus to design the Napier harvesting ergonomics engineering intervention in order to replace the use of machetes in conventional harvest. The comprehensive laboratory studies were conducted by focusing on stooped posture by using electromyography (EMG). Three kinds of stooped posture condition were investigated: free load stooped; with 10 kg load stooped; with support holder stooped. Eleven male subjects were selected to demonstrate these stooped conditions with four difference flexion levels. The EMG signal data then was analyzed by ANOVA with α (0.05) and plotted into scatterplot, and then linear regression was constructed to generate the linear mathematical equation. The ANOVA showed the significant difference with p-value (0.001) and the boxplot proved that stooped with support holder give better result. By the laboratory experiment findings, the ergonomics engineering intervention was properly designed. The intervention was developed in prototype with motorizes assistance and semi-automated system. A prototype field evaluation has been conducted to monitor the muscle activities with focusing on the lower back region by using EMG. The EMG data then was analyzed by the t-test with α (0.05). Ten volunteered farmworker is randomly picked to simulate the harvesting process. Based on the boxplot, the results shown reduction of back muscle activities as compared to the conventional method due to working posture improvement. The intervention prototype had a significant difference in the muscle activities with p-value (0.00034). Besides, the RULA and REBA also shows better score as concrete evidence in improving body posture during harvesting work with this new method. Furthermore, the harvest cycle time was improved about 70.2% where it’s getting better production outputs. The t-test analysis also shown the significance difference with p-value (0.0000373) and based on boxplot, the intervention harvest depicted better cycle time. As conclusions, optimized working posture along with the assistance of intervention prototype in the Napier harvesting process is suggested since the data provided in this project show that it could decrease the risk of low back pain. Apparently, this study also encourage of generating the innovation in designing new tools to increase the agriculture workers’ performance. Universiti Malaysia Perlis (UniMAP) 2015 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/61542 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/1/Page%201-24.pdf 9c8b0f202627b4b0b7071a5914f6f720 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/2/Full%20text.pdf c9ebe4527ec1e6a170244d0cb94b8747 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Napier Napier industry Harvesting works Napier -- Perlis Napier harvesting machine School of Mechatronic Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Associates Professor Dr. Hazry Desa
topic	Napier Napier industry Harvesting works Napier -- Perlis Napier harvesting machine
spellingShingle	Napier Napier industry Harvesting works Napier -- Perlis Napier harvesting machine Mohd Khairul Faizi, Abd Rahman The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
description	Most farmworkers in the small and medium Napier industry are using conventional method for harvesting works. Therefore, they are extremely exposed to the risk of low back pain (LBP) disease which is one of the musculoskeletal disorders (MSDs) typical problems. Referring to the Rapid Upper Limb Assessment (RULA), and Rapid Entire Body Assessment (REBA), conventional harvesting works was highly risk to undergo LBP due to extreme stooped posture and high of low back biomechanical loading. Based on the body score survey result, there were 95% of respondents suffering of LBP. Hence, the objective of this project is to identify proper working posture thus to design the Napier harvesting ergonomics engineering intervention in order to replace the use of machetes in conventional harvest. The comprehensive laboratory studies were conducted by focusing on stooped posture by using electromyography (EMG). Three kinds of stooped posture condition were investigated: free load stooped; with 10 kg load stooped; with support holder stooped. Eleven male subjects were selected to demonstrate these stooped conditions with four difference flexion levels. The EMG signal data then was analyzed by ANOVA with α (0.05) and plotted into scatterplot, and then linear regression was constructed to generate the linear mathematical equation. The ANOVA showed the significant difference with p-value (0.001) and the boxplot proved that stooped with support holder give better result. By the laboratory experiment findings, the ergonomics engineering intervention was properly designed. The intervention was developed in prototype with motorizes assistance and semi-automated system. A prototype field evaluation has been conducted to monitor the muscle activities with focusing on the lower back region by using EMG. The EMG data then was analyzed by the t-test with α (0.05). Ten volunteered farmworker is randomly picked to simulate the harvesting process. Based on the boxplot, the results shown reduction of back muscle activities as compared to the conventional method due to working posture improvement. The intervention prototype had a significant difference in the muscle activities with p-value (0.00034). Besides, the RULA and REBA also shows better score as concrete evidence in improving body posture during harvesting work with this new method. Furthermore, the harvest cycle time was improved about 70.2% where it’s getting better production outputs. The t-test analysis also shown the significance difference with p-value (0.0000373) and based on boxplot, the intervention harvest depicted better cycle time. As conclusions, optimized working posture along with the assistance of intervention prototype in the Napier harvesting process is suggested since the data provided in this project show that it could decrease the risk of low back pain. Apparently, this study also encourage of generating the innovation in designing new tools to increase the agriculture workers’ performance.
format	Thesis
author	Mohd Khairul Faizi, Abd Rahman
author_facet	Mohd Khairul Faizi, Abd Rahman
author_sort	Mohd Khairul Faizi, Abd Rahman
title	The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
title_short	The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
title_full	The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
title_fullStr	The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
title_full_unstemmed	The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis
title_sort	effectiveness of napier harvesting machine in reducing postural risk among napier harvester in perlis
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Mechatronic Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61542/2/Full%20text.pdf
_version_	1747836845083852800

The effectiveness of napier harvesting machine in reducing postural risk among napier harvester in Perlis

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