Showing 6 results for Kazemi
Zeinab Kazemi, Hamidreza Mokhtarinia, Reza Oskuei Zadeh,
Volume 4, Issue 2 (Journal of Ergonomics 2016)
Abstract
Introduction: In the recent decades, owing to the advancement of technology, most jobs and occupations require the use of computers. Lack of information about ergonomic conditions has resulted in various occupational injuries. Break time between work and doing exercise, help in reduction of musculoskeletal symptoms. The present study aimed to use a new ergo-feedback software and to assess its usability in office staff.
Methods: Thirty office staff participated in this study. In the first step, muscle-skeletal symptoms were checked by a body map checklist. Then, the Borg score was determined by the participants, initially and after one work day. The software was then run in their systems and they worked with it for about two weeks. After two weeks, the Borg scale was completed again and efficacy of the software was evaluated by the system usability scale (SUS). Data analysis was performed using descriptive statistics (mean and standard deviation) and Wilcoxon test. Statistical analysis was done by the SPSS software version 19.
Results: The results showed that there was a significant difference between the Borg score pre and post intervention (P > .05). The majority of the users were satisfied with the software with the SUS score showing about 82.25% satisfaction.
Conclusions: According to this study, office workers were satisfied with using this software and it can help reduce musculoskeletal symptoms during a prolonged time period.
Reza Shahidi, Rostam Golmohammadi, Zahra Pirmoradi Rizevandi, Azar Soltani, Nassrin Shirmohammadi Khoram, Reza Kazemi,
Volume 8, Issue 1 (Iranian Journal of Ergonomics 2020)
Abstract
Background and Aim: Undesirable lighting at work environment causes visual and non-visual effects on employers. The aim of this study was to compare the quantity and quality of combined and artificial lighting in daytime and its relationship with the indexes of mental performance.
Methods: This study was carried out at 65 rooms and on 81 employees randomly selected from different clusters. Measurement of lighting parameters was done using a spectrometer. To assess the cognitive function, the Pshycomotor Vigiliance Task (PVT) test and for the sake of visual comfort, alertness and sleep quality, the Conlone, KSS (Karolinska Sleepiness Scale) and PSQI (Pittsburgh Sleep Quality Index) questionnaires were used respectively.
Results: Most artificial sources used in the rooms included fluorescent lights in different shapes and colors. The average indexes of combined lighting was more than artificial lightings (P<0.001). Visual comfort was correlated with high color temperature (P=0.006, r = 0.315). The employees with natural lighting had less visually impairment. The sleep quality of the subjects was related to the type of work environment lighting (Chi2=0.59, P=0.44). Alertness of subjects exposed to high color temperature or natural light was better at 8 and 11 hours. The results of cognitive performance test showed no significant difference between different lighting conditions.
Conclusion: Using natural light or artificial lights with adequate illuminance and high correlated color temperature can increase the alertness and visual comfort to some extent and improve the sleep quality of day staff employers.
Mohammadreza Jannati, Hamed Aghaei, Taleb Askaripoor, Mehdi Khazaei, Ehsan Bayat Khalaji, Elahe Kazemi,
Volume 8, Issue 2 (Iranian Journal of Ergonomics 2020)
Abstract
Background and Aim: Despite the main role of cranes in advancing construction operations, however, accidents and occupational injuries resulting from their activities have become a critical issue. Recent evidence suggests that the cause of these problems may be associated with the absence of design of the interior space of the crane cabin, and the tasks of the operators, based on ergonomic principles. This study was conducted to assess the ergonomic risk of the tower crane operator’s activities and redesigning the dimensions and interior space of these cranes, based on the anthropometric dimensions of Iranian operators.
Methods: In this descriptive cross-sectional study, 30 male tower crane operators working on three major construction projects in Tehran were investigated. Initially, a multi-step approach was applied to define the problem, including: observing the working statuses, interviewing operators, Nordic Musculoskeletal Disorder Questionnaire, and rapid upper limb assessment (RULA) method. Then, using anthropometric data, the dimensions and interior space of the crane chamber were redesigned.
Results: The results of the rapid upper limb assessment method showed that the activities of tower crane operators were at high and very high-risk levels. Also, 85% and 38.5% of these people reported pain and discomfort in one of the nine areas of their body in the last 12 months and 7 days, respectively. In this study, the dimensions of the interior space of the redesigned tower crane cabin were obtained 160.8×144.1×199.7.
Conclusion: Based on the results of the study, it can be concluded that the current interior design of the tower crane cabin does not fulfill the needs of the operators. Hence, redesigning it appears essential to enhance human-machine compatibility, improve safety and productivity, and prevent musculoskeletal disorders (MSD).
Hossein Saremi, Saideh Sadat Mortazavi, Sima Naderifar, Homa Naderifar, Amir Shamlou-Kazemi, Salman Khazaei,
Volume 10, Issue 4 (Iranian Journal of Ergonomics 2023)
Abstract
Abstract: Musculoskeletal disorders are one of the three major disabling diseases in the world. However, the burden of disease in Iran is not yet well-known. Due to the high prevalence of musculoskeletal disorders in students, prevention and control policies should focus on students and health interventions should be carried out based on risk factors. Musculoskeletal problems impose significant economic costs on health and indirectly affect the productivity of people. Therefore, it is essential to provide new approaches aimed at maintaining and improving musculoskeletal health and preventing and managing diseases.
Maryam Afshari, Mehdi Kangavari, Farogh Mohammadian, Shahnaz Maleki, Farideh Kazemi,
Volume 11, Issue 2 (Iranian Journal of Ergonomics 2023)
Abstract
Objectives: Traffic accidents are one of the leading causes of death among pregnant women. One of the investment for maternal and neonatal health is targeted interventions to increase maternal safety to prevent traffic accidents. Therefore, this study was conducted with the aim of identifying and categorizing different types of safety interventions to reduce traffic accidents among pregnant women.
Methods: The study was a systematic review. Intervention articles were searched from Persian databases, such as Magiran, Iran Medex and SID and English scientific information databases, such as PubMed, Cochrane, Sciencedirect, Embase, Science of Web and Scopus. All identified articles were collected by one person using Endnote software. The full text of the articles was then reviewed by two researchers and the articles that met the entry criteria were identified. Other articles were added to the previous collection of articles using Forward Citation and Backward Citation Reviews. The EPHPP instrument was used to assess the quality of the studies.
Results: The initial search resulted in finding 5329 article abstracts. Finally, two intervention studies were selected for evaluation in this study. One study used an educational/behavioral approach and the other used an engineering/approach. Both studies reported that they had produced significant changes in the desired outcome of seatbelt use in pregnant women. The quality of one study was rated as poor and the other as moderate.
Conclusion: Safety interventions to reduce traffic accidents among pregnant women have been tested only to a very limited extent worldwide. It seems that there is still much room for study in the field of safety interventions to reduce traffic accidents among pregnant women.
Fatemeh Alibeygian, Hamidreza Mokarami, Reza Kazemi,
Volume 12, Issue 2 (Iranian Journal of Ergonomics 2024)
Abstract
Objectives: The current qualitative study aimed to understand the factors affecting the optimal performance of bus drivers using the macro ergonomics approach and the work systems model. This topic is important as it addresses significant gaps in the existing literature regarding the ergonomic and systemic factors influencing driver performance.
Methods: In this study, 13 in-depth interviews were conducted with bus drivers. A qualitative content analysis of the data was performed using MAXQDA2020 software after data collection. Codes were extracted based on nine categories of factors affecting performance related to the five components of the work system: organizational, individual, environmental, task, and technology.
Results: The analysis revealed that employees reported low performance mainly due to organizational structural problems and managerial characteristics. These findings highlight the critical role of organizational factors in driver performance.
Conclusion: The results indicate that ergonomic interventions targeting organizational structural issues and managerial practices could significantly improve the performance and satisfaction of bus drivers. The insights gained from this research can inform practical interventions to improve the working conditions and overall performance of this occupational group. These findings contribute to the field by providing a direction for enhancing the work system to better support driver performance.
