Investigating the Relationship Between the Risk of Psychosocial Factors and Grip Fatigue of Employees with Manual Tasks

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MAHDAVI NEDA; FARADMAL JAVAD; DIANAT IMAN; KHOTANLOU HASSAN; HEIDARIMOGHADAM RASHID

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Journal: Iranian Journal of Ergonomics Year:2020 | Volume:8 | Issue:3 Page(s): 48-58

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Title

Investigating the Relationship Between the Risk of Psychosocial Factors and Grip Fatigue of Employees with Manual Tasks

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Keywords

Grip fatigueQ1

Grip forceQ1

Manual tasksQ1

Psychosocial risk factorsQ1

Copenhagen questionnaireQ1

Abstract

Background and Objectives: Fatigue is a common and highly prevalent problem among workers. Muscle fatigue is the result of general fatigue that is caused by different risk factors. This research was conducted to assess Grip fatigue between workers with Manual tasks and its relationship to Psychosocial risk factors. Methods: In this study, Jamar hydraulic dynamometer was used to investigate the decrease in the production of Grip force or Grip fatigue. The Grip force of 157 subjects in three job levels that met the inclusion criteria was recorded, three times in 8 hours shift. The Psychosocial risk factors were also assessed using the Copenhagen psychosocial questionnaire and their relationship with Grip force and Grip fatigue was analyzed. Results: Sixty-one percent, 62%, and 69% of employees in light, medium, and heavy tasks, respectively, experienced Grip fatigue in the second phase of the study. It seems that as the power/speed increased and the tasks became more difficult, employees experienced more Grip fatigue in the right hand. The declining trend of Grip force and the increase in Grip fatigue was more evident in heavy task jobs. No moderate or strong correlation was observed between the Psychosocial risk factors and Grip fatigue. Conclusion: Since the nature of worker tasks in heavy Manual tasks required more force exertion, they experienced more Grip fatigue in their right hand than other workers. It is not possible to draw definitive conclusions about the impact of Psychosocial risk factors on Grip fatigue. Investigating the impact of cognitive loads and anthropometric dimensions on Grip fatigue can be an interesting topic for future studies.

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APA: Copy

MAHDAVI, NEDA, FARADMAL, JAVAD, DIANAT, IMAN, KHOTANLOU, HASSAN, & HEIDARIMOGHADAM, RASHID. (2020). Investigating the Relationship Between the Risk of Psychosocial Factors and Grip Fatigue of Employees with Manual Tasks. JOURNAL OF ERGONOMICS, 8(3 ), 48-58. SID. https://sid.ir/paper/383401/en

Vancouver: Copy

MAHDAVI NEDA, FARADMAL JAVAD, DIANAT IMAN, KHOTANLOU HASSAN, HEIDARIMOGHADAM RASHID. Investigating the Relationship Between the Risk of Psychosocial Factors and Grip Fatigue of Employees with Manual Tasks. JOURNAL OF ERGONOMICS[Internet]. 2020;8(3 ):48-58. Available from: https://sid.ir/paper/383401/en

IEEE: Copy

NEDA MAHDAVI, JAVAD FARADMAL, IMAN DIANAT, HASSAN KHOTANLOU, and RASHID HEIDARIMOGHADAM, “Investigating the Relationship Between the Risk of Psychosocial Factors and Grip Fatigue of Employees with Manual Tasks,” JOURNAL OF ERGONOMICS, vol. 8, no. 3 , pp. 48–58, 2020, [Online]. Available: https://sid.ir/paper/383401/en

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