Showing 2 results for Occupational Fatigue
Hamzeh Gheysvandi, Reza Khani Jazani, Seyed Mohammad Seyedmehdi,
Volume 12, Issue 3 (9-2022)
Abstract
Introduction: Occupational fatigue is one of the harmful factors in many work environments, including health centers, which can have adverse effects on the health and safety of staff. This study was designed and conducted to determine the relationship between occupational fatigue and elements of the systems engineering model for patient safety in nurses.
Material and Methods: This descriptive correlational study was conducted with the participation of 457 nurses of Shahid Beheshti University of Medical Sciences in 2018. Dimensions of fatigue were assessed by a Multidimensional Fatigue Inventory (MFI) and Systems Engineering Initiative for Patient Safety (SEIPS) model’s elements using the SEIPS model’s questionnaire. Validity was examined using the Lawshe method; calculating Content Validity Ratio (CVR) and Content Validity Index (CVI) was approved through the confirmation of experts. Reliability was assessed using the intraclass correlation coefficient (ICC) and Cronbach’s alpha. Data analysis was performed using SPSS version 21
Results: The findings of this study indicated that the highest score of fatigue was related to the general fatigue dimension with an average of 12.86 and SD of 3.23, and the lowest score was related to the reduction of the motivation dimension with an average of 9.11 and SD of 3.66. In this study, no significant relationship was observed between demographic characteristics and fatigue dimensions, but a significant relationship was observed between the dimensions of fatigue with the element of organization, task, technology/tools, and physical environment.
Conclusion: The results of this study showed that fatigue in nurses was moderate, and the factors of the work system play a greater role in the occurrence of fatigue than demographic factors. Therefore, planning to improve the work system can help reduce fatigue in nurses.
Mohammadreza Shahabi Kaseb, Masoumeh Mahmoudzadeh, Zahra Estiri, Arezou Mehranian,
Volume 15, Issue 3 (10-2025)
Abstract
Introduction: Commercial trucking is one of the most challenging occupations, with long work hours, short rest periods, and substantial psychological pressures that contribute to fatigue and deterioration at work. Since regular physical activity is one of the pillars of healthy life and can improve physical and mental functioning, the present study investigated the relationship between physical activity and driver performance with occupational fatigue as a possible mediator.
Material and Methods: The study population was intercity commercial truck drivers in several cities of Razavi Khorasan Province. Using Green’s formula, we calculated a sample size of 140 participants. Data were collected with the Swedish Occupational Fatigue Inventory, the Sharkey Physical Activity Questionnaire, and the Driver Performance Questionnaire (unsafe behaviors). Statistical analyses included Pearson correlation coefficients and multiple regression analyses.
Results: Our results showed a significant positive correlation between occupational fatigue and driver performance problems (P=0.001). Both the correlation between physical activity and work fatigue, and the correlation between physical activity and driver performance were significant negative correlations (P=0.001). In addition, the indirect link between physical activity and driver performance via occupational fatigue was also significantly negative (P=0.001).
Conclusion: Based on our research results, enhanced physical activity contributes to enhanced driver performance (decreased unsafe behaviors) of commercial truck operators, directly and indirectly through decreased occupational fatigue. This study provides scientific evidence for the development of safety policy in the transportation industry of Iran.
