Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method

Introduction: Too many people are working in the agricultural sector and therefore, pay more attention to the safety and health at work in the agricultural sector is important. This issue is more important in developing industrial countries where the level of the ergonomic working condition is less...

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Autores principales:	A Nikkhah, B Emadi, M Khojastehpour, S. R Attarzadeh Hossini
Formato:	article
Lenguaje:	EN FA
Publicado:	Ferdowsi University of Mashhad 2016
Materias:	agricultural machinery electrical activity gastrocnemius muscle pedal Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/0a8137e81ffd4fa28f4a13b945145865
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id	oai:doaj.org-article:0a8137e81ffd4fa28f4a13b945145865
record_format	dspace
institution	DOAJ
collection	DOAJ
language	EN FA
topic	agricultural machinery electrical activity gastrocnemius muscle pedal Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	agricultural machinery electrical activity gastrocnemius muscle pedal Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040 A Nikkhah B Emadi M Khojastehpour S. R Attarzadeh Hossini Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
description	Introduction: Too many people are working in the agricultural sector and therefore, pay more attention to the safety and health at work in the agricultural sector is important. This issue is more important in developing industrial countries where the level of the ergonomic working condition is less than that of developed countries. Attention to ergonomic condition of agricultural machinery drivers is one of the goals of agricultural mechanization. Therefore, in this study the ergonomic conditions of brake and accelerator mechanisms for MF285 and MF399 tractor's drivers were investigated using a new method. Materials and Methods: 25 people were selected for experiment. The electrical activity of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus medialis, Vastus lateralis, Quadratus Lumborum and Trapezius muscles of drivers before and during pressing the pedal and after rest time were recorded using Biovision device. Measurements were performed for each person on each muscle 30 seconds before pressing the pedal, 60 seconds after pressing the pedal and after 60 seconds of rest. For all drivers, the muscles on the right side (brake and accelerator side) have been selected and tested. The measurements were performed in compliance with appropriate time intervals between the measurements. Results and Discussion: Ergonomic assessment of brake pedal: The results showed that the RMS electrical activity of muscles of Vastus medialis and Medial gastrocnemius, during 60 seconds braking were 2.47 and 1.97. So, Vastus medialis and Medial gastrocnemius had the highest stress during pressing the MF399 tractor's brake pedal. Moreover, the Medial gastrocnemius and Lateral gastrocnemius with RMS electrical activity ratio of 2.47 and 1.74 had the highest RMS electrical activity ratio respectively, during 60 seconds braking compared to before braking of MF285 tractor. The comparison of results showed that the Vastus medialis and Trapezius had the higher stress during braking of MF285 tractor than that of MF399 tractor, while, muscles of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus lateralis, Trapezius and Quadratus Lumborum showed the lower stress during braking of MF285 tractor. Ergonomic assessment of accelerator: During 60 seconds pressing the accelerator pedal for MF285 the RMS electrical activity of muscles of Quadratus Lumborum and Medialis gastrocnemius were 3.25 and 2.15. So, these muscles had the highest stress during pressing the accelerator pedal for MF285. Drivers of MF399 tractor experienced high stress in their Vastus lateralis and Lateralis gastrocnemius muscles during pressing the accelerator pedal. The results highlighted that for all muscles, except Vastus lateralis, the electrical activity ratio during pressing the accelerator pedal of MF285 tractor were higher than that for MF399 tractor. Conclusions: To conclude, Vastus medialis and Trapezius had the higher stress during braking of MF285 tractor than that of MF399 tractor, while, muscles of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus lateralis, Trapezius and Quadratus Lumborum showed the lower stress during braking of MF285 tractor as compared with the other model of tractor. Generally in all muscles, except Vastus lateralis, the electrical activity ratio during pressing the accelerator pedal of MF285 tractor was higher than that for MF399 tractor and the drivers need more effort while pressing the accelerator pedal and drivers of this tractor had adverse condition while using the accelerator mechanism. Acknowledgements: The research leading to these results has received funding from the Ferdowsi University of Mashhad, Iran, is gratefully acknowledged. Gratitude also goes to Dr. Mohammad Hossein Abbaspour-Fard, Hossein Fallahi and Mehdi Mahjour for their guidance and support throughout parts of this research.
format	article
author	A Nikkhah B Emadi M Khojastehpour S. R Attarzadeh Hossini
author_facet	A Nikkhah B Emadi M Khojastehpour S. R Attarzadeh Hossini
author_sort	A Nikkhah
title	Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
title_short	Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
title_full	Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
title_fullStr	Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
title_full_unstemmed	Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method
title_sort	ergonomic assessment of brake and accelerator mechanisms of mf285 and mf399 tractors using electromyography method
publisher	Ferdowsi University of Mashhad
publishDate	2016
url	https://doaj.org/article/0a8137e81ffd4fa28f4a13b945145865
work_keys_str_mv	AT anikkhah ergonomicassessmentofbrakeandacceleratormechanismsofmf285andmf399tractorsusingelectromyographymethod AT bemadi ergonomicassessmentofbrakeandacceleratormechanismsofmf285andmf399tractorsusingelectromyographymethod AT mkhojastehpour ergonomicassessmentofbrakeandacceleratormechanismsofmf285andmf399tractorsusingelectromyographymethod AT srattarzadehhossini ergonomicassessmentofbrakeandacceleratormechanismsofmf285andmf399tractorsusingelectromyographymethod
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spelling	oai:doaj.org-article:0a8137e81ffd4fa28f4a13b9451458652021-11-14T06:33:19ZErgonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method2228-68292423-394310.22067/jam.v6i1.37939https://doaj.org/article/0a8137e81ffd4fa28f4a13b9451458652016-03-01T00:00:00Zhttps://jame.um.ac.ir/article_29749_5f1554f04ea0dfd8173f5d7711a7bb1a.pdfhttps://doaj.org/toc/2228-6829https://doaj.org/toc/2423-3943Introduction: Too many people are working in the agricultural sector and therefore, pay more attention to the safety and health at work in the agricultural sector is important. This issue is more important in developing industrial countries where the level of the ergonomic working condition is less than that of developed countries. Attention to ergonomic condition of agricultural machinery drivers is one of the goals of agricultural mechanization. Therefore, in this study the ergonomic conditions of brake and accelerator mechanisms for MF285 and MF399 tractor's drivers were investigated using a new method. Materials and Methods: 25 people were selected for experiment. The electrical activity of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus medialis, Vastus lateralis, Quadratus Lumborum and Trapezius muscles of drivers before and during pressing the pedal and after rest time were recorded using Biovision device. Measurements were performed for each person on each muscle 30 seconds before pressing the pedal, 60 seconds after pressing the pedal and after 60 seconds of rest. For all drivers, the muscles on the right side (brake and accelerator side) have been selected and tested. The measurements were performed in compliance with appropriate time intervals between the measurements. Results and Discussion: Ergonomic assessment of brake pedal: The results showed that the RMS electrical activity of muscles of Vastus medialis and Medial gastrocnemius, during 60 seconds braking were 2.47 and 1.97. So, Vastus medialis and Medial gastrocnemius had the highest stress during pressing the MF399 tractor's brake pedal. Moreover, the Medial gastrocnemius and Lateral gastrocnemius with RMS electrical activity ratio of 2.47 and 1.74 had the highest RMS electrical activity ratio respectively, during 60 seconds braking compared to before braking of MF285 tractor. The comparison of results showed that the Vastus medialis and Trapezius had the higher stress during braking of MF285 tractor than that of MF399 tractor, while, muscles of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus lateralis, Trapezius and Quadratus Lumborum showed the lower stress during braking of MF285 tractor. Ergonomic assessment of accelerator: During 60 seconds pressing the accelerator pedal for MF285 the RMS electrical activity of muscles of Quadratus Lumborum and Medialis gastrocnemius were 3.25 and 2.15. So, these muscles had the highest stress during pressing the accelerator pedal for MF285. Drivers of MF399 tractor experienced high stress in their Vastus lateralis and Lateralis gastrocnemius muscles during pressing the accelerator pedal. The results highlighted that for all muscles, except Vastus lateralis, the electrical activity ratio during pressing the accelerator pedal of MF285 tractor were higher than that for MF399 tractor. Conclusions: To conclude, Vastus medialis and Trapezius had the higher stress during braking of MF285 tractor than that of MF399 tractor, while, muscles of Medialis gastrocnemius, Lateralis gastrocnemius, Vastus lateralis, Trapezius and Quadratus Lumborum showed the lower stress during braking of MF285 tractor as compared with the other model of tractor. Generally in all muscles, except Vastus lateralis, the electrical activity ratio during pressing the accelerator pedal of MF285 tractor was higher than that for MF399 tractor and the drivers need more effort while pressing the accelerator pedal and drivers of this tractor had adverse condition while using the accelerator mechanism. Acknowledgements: The research leading to these results has received funding from the Ferdowsi University of Mashhad, Iran, is gratefully acknowledged. Gratitude also goes to Dr. Mohammad Hossein Abbaspour-Fard, Hossein Fallahi and Mehdi Mahjour for their guidance and support throughout parts of this research.A NikkhahB EmadiM KhojastehpourS. R Attarzadeh HossiniFerdowsi University of Mashhadarticleagricultural machineryelectrical activitygastrocnemiusmusclepedalAgriculture (General)S1-972Engineering (General). Civil engineering (General)TA1-2040ENFAJournal of Agricultural Machinery, Vol 6, Iss 1, Pp 25-34 (2016)

Ergonomic assessment of brake and accelerator mechanisms of MF285 and MF399 tractors using electromyography method

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