Showing 37 results for Mohammadi
Rostam Golmohammadi, Mohsen Mehdinia, Reza Shahida, Ebrahim Darvishi,
Volume 5, Issue 2 (Journal of Ergonomics 2017)
Abstract
Introduction: Lighting affects many non-visual functions such as Circadian rhythm, alertness, core body temperature, hormone secretion and sleep. The aim of this study was to investigate the effects of lighting on human cognitive and mental performance.
Methods: In this systematic review, databases including ISI Web of Knowledge, Scopus, PubMed and Science Direct were searched to access the relevant studies. The search was performed using the keywords "Lighting" and "Illumination" and "Cognitive Performance", "Mental Performance", "Memory ", "Attention", and "Concentration" by title, keyword and abstracts of articles published in mentioned databases from 2010 to 2016.
Results: Lighting affects human cognitive performance in three areas of psycho-cognitive (visual comfort, visual perception, color recognition, identification of symbols, attention, working memory, learning, reaction time and brain function), biocognitive area (alertness, mood, vitality, subjective feelings, motivation, well-being and quality of sleep) and mental workload (amount of workload, psychological stress, and mental fatigue). The best light to regulate cognitive, biological (circadian rhythm) and mental processes is bright daylight in the morning with a short wavelength (wavelength 420-480 nm) and high intensity (1000lx).
Conclusions: Lighting design in addition to providing comfort and visual needs should provide the non-visual and cognitive needs such as attention, alertness, mood, sleep quality and decrease mental fatigue and eventually well-bing.
Mohammad Babamiri, Rashid Heidari Moghadam, Behnam Mohammadi, Younes Mohammadi,
Volume 5, Issue 3 (Journal of Ergonomics-Fall 2017)
Abstract
Background: The purpose of this study was to investigate the relationship between proactive personality with networking by mediating role of job satisfaction.
Methods: The research design in this study was a correlation model, through structural equation modeling. The target population in this study was all nurses working in public hospitals in Hamadan that 300 people of them were selected as the sample by simple random sampling. The data collection tools were Proactive Personality Scale (Bateman and Crant), Proactive Behavior Questionnaire (Networking, Ashford and Black) and Job Satisfaction Questionnaire (Brayfield & Rothe). The proposed model was evaluated using correlation and path analysis method using SPSS18 and AMOS18 software.
Results: Pearson correlation showed that there is a positive and significant relationship between proactive personality with job satisfaction and networking. The path analysis results support the pattern's fit with the data. The findings showed that job satisfaction mediates the relationship between proactive personality and networking.
Conclusion: Job satisfaction strengthens the efforts of proactive person in networking and broadens the career communication network.
Zahra Pirmoradi, Rostam Golmohammadi, Javad Faradmal, Majid Motamedzade,
Volume 5, Issue 4 (Journal of Ergonomics 2018)
Abstract
Background: Inadequate lighting in the workplace can cause unconventional changes in the posture of office workers. Poor ergonomic conditions in the office cause inappropriate postures during work and increase pressure on the musculoskeletal system which can cause some disorders in long-term. In this study, the relationship between work environment lighting with the prevalence and severity of musculoskeletal pain among office workers has been investigated.
Methods: In this study, the intensity of local illumination at work surface and at the perpendicular surface (perpendicular surface to the work surface and at the height of workers eye), and intensity of general lighting was measured based on the standard of The Illuminating Engineering Society (IES) using the SEKONIC, C-7000 SpectroMaster. Also, to assess the prevalence and severity of pain of musculoskeletal disorders, a Nordic Questionnaire and a Body map index were used respectively. To assess the office work strain, Rapid Office Strain Assessment techniques (ROSA) were used. Data were analyzed by SPSS 21.
Results: The results showed that the average intensity of general lighting, local lighting at work surface and at the perpendicular surface were 30.6%, 33.9%, and 38.4% respectively, which is lower than required illumination intensity of Occupational Exposure Limits (OEL). The neck and waist had the highest prevalence of the musculoskeletal disorders among the workers. The highest frequency percentage of scores in the ROSA method was the score 5 (41.7%) which had a significant correlation with illumination intensity.
Conclusion: Illumination intensity can be considered as one of the important factors affecting posture in administrative staff. Therefore, the improvement of illumination intensity can decrease the severity of musculoskeletal pain and improve the body postures of the staff and, consequently, increase their comfort.
Azar Soltani, Mohsen Aliabadi, Rostam Golmohammadi, Majid Motamedzade,
Volume 6, Issue 1 (Journal of Ergonomics 2018)
Abstract
Background: Exposure to hand-arm vibration is one of the most common physical harmful factors. The purpose of this study was Experimental study of the level of manual performance disability caused by exposure to hand-arm vibration among automobile casting workers.
Methods: This study was performed on 53 casting workers as case group and 28 controls as control group. The measurement of the vibration of the worker's arms and hands was carried out in accordance with the ISO 5349 standard. The level of manual performance disability was evaluated using skeletal-muscular, sensory-neural and vascular tests. Also, a questionnaire was used for the level of disability of the arm, shoulder and hand DASH. Data were analyzed using SPSS16 software.
Results: The 8-hour vibration exposure was 8.33 m / s2 (4.49), which is exceeded the permissible level. Skill and dexterity, fingers and grip strength of the dominant hand in the case group were decreased by 4%, 13.3% and 11%, respectively (p <0.05). The regeneration time of the dominant hand in the case group was 41.2% higher than the control group (p <0.05). Sensory-neurological complications increased in the case group compared to the control group, however, it was not statistically significant. The DASH score in the case group was 10.7 (13.4) and the control group was 4.1 (5.1).
Conclusion: Hand-arm manual performance disability in workers exposed to vibration decreased from 4% to 14%, which confirmed the DASH score. In addition, workers showed a higher level of vascular complications compared with sensory-neurological complications.
Rashid Heidarimoghadam, Mehrane Shabani, Younes Lotfi, Fakhradin Ghasemi, Younes Mohammadi,
Volume 6, Issue 2 (Journal of Ergonomics 2018)
Abstract
Introduction: One of the factors affecting carpal tunnel syndrome (CTS) is the lack of coordination and appropriateness of these tools. Designing a handy tool helps with a better performance, befitting and less fatigue. In this study, anthropometric data on the hands (right and left) of women and men were collected.
Materials & Methods: This research was descriptive and 576 people participated in this study; 10 anthropometric measurements of the hand according to the principles of measurement of Pheasant were measured by digital caliper under the same conditions. The measured anthropometric dimensions were the length of the hands and palms, the width of the hands and palms, the length of the fingers (m1-m2-m3-m4-m5) and the maximum power grip. Descriptive indices such as percentile 5, 50 and 95, maximum and minimum, mean and standard deviation were calculated using SPSS software.
Results: 290 women and 286 men participated in this study. Mean and standard deviation of age was (40.58 ± 9.95), height (1.66 ± 1.14) and BMI (26.85 ± 4.50). 90.8% were right handed and (9.2%) were left handed. The mean difference in length of hand, palm length, hand width, thumb length, middle finger length, small finger length, maximum power grip of women and men were statistically significant (P<0.01). All dimensions of the hand in men were larger than women.
Conclusion: Anthropometric dimensions are influenced by factors such as gender, age, genetics, and even type of nutrition, occupation, and other factors. The size of the dimensions of the hands of women and men are different. Anthropometric database of two communities should be used to design handheld devices that are commonly used by both women and men. The findings can be used to design and redesign any hand tools and improve the convenience of users.
Behzad Fouladi Dehaghi, Abbas Mohammadi, Leila Nematpour,
Volume 7, Issue 2 (Iranian Journal of Ergonomics 2019)
Abstract
Background and Objectives: Mental fatigue is a condition triggered by prolonged cognitive activity. Mental fatigue causes brain over-activity. This is a condition where the brain cells become exhausted, hampering person productivity, and overall cognitive function. The aim of this study was to assess students’ mental fatigue using brain indices.
Methods: The present descriptive - analytic study has been conducted on 20 students of the Faculty of Health mean age (SD) of 24.40 (3.73) years old in Ahwaz University of Medical Sciences (2019). To assess the performance of the participants, they were asked to study a text with spelling errors and correct those errors. This activity was performed in five stages, each lasting 15 min and EEG was recorded at all stages, and at each stage, the visual analog scale was completed by participants. Data analysis was done by SPSS 24.
Results: The results showed that the activity of alpha, beta, and theta signals in the first 15 minutes was 0.89±0.30, 0.70±0.33, and 1.19±0.36, and the last 15 minutes, 0.63±0.34, 0.55±0.26, and 1.03±0.34 respectively. Reducing the activity of the signals indicated there has been an increase in the amount of mental fatigue in individuals. Also, using visual analog scale, the individuals have acknowledged that they have experienced symptoms of mental fatigue. Finally, there was no significant relationship between students’ EEG and visual analog scale.
Conclusion: The results showed that alpha, beta and theta indices could be suitable indicators for evaluating mental fatigue. Also, mental fatigue can be one of the factors that affect the accuracy and performance of individuals, so that it can reduce their attention and efficiency.
Seyed Taghi Mirmohammadi, Osman Gook, Seyed Nouroddin Mousavinasab, Hadi Mahmoodi Sharafe,
Volume 7, Issue 4 (Iranian Journal of Ergonomics 2020)
Abstract
Background and Objectives: Bank staff do much of their work using computers, Their equipment and layout may put the body in an inappropriate position and lead to musculoskeletal disorders (MSDs), so this study aimed to determine the prevalence of MSDs in bank staff and its relationship with office tensions.
Methods: This descriptive cross-sectional study was performed on 173 employees of Melli Bank of North Khorasan Province. The prevalence of MSDs was estimated through CMDQ, Risk factors were estimated through ROSA and data were entered into SPSS 20. Then their relationship with each other and with the equipment layout was determined by Spearman test.
Results: The mean ROSA scores were 4.73±0.793 and 63.6% of the postures were in the intervention group. The mean CMDQ scores were 103.63±181.004. Spearman test showed a good correlation between ROSA and CMDQ results (P=0.021, R= 0.175). There was a significant relationship between work experience and prevalence of MSDs (P=0.037, R=0.159). Kruskal-Wallis test showed a significant relationship between education level and CMDQ scores (P=0.38). The most common disorders in the organs were neck (53.8%) and lower back (49.7%).
Conclusion: Given the correlation between the ROSA results and the CMDQ, they can be used together. The change should be considered immediately for persons who are in intervention group. The chair and monitor played a more important role in raising the ROSA score. Improvements should be made by providing an ergonomic chair as well as a proper layout of other equipment such as a monitor.
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.
Neda Mahdavi, Maryam Zarei, Negin Keshvari, Younes Mohammadi, Mahdi Zarei, Rashid Heidarimoghadam,
Volume 8, Issue 1 (Iranian Journal of Ergonomics 2020)
Abstract
Background and Objectives: One of the most important aspects of ergonomics is physiologic balance between human characteristics and their jobs. This study aimed to investigate the physiological characteristics of janitor, safety guard and facility workers of a work organization and determine their physiological fit.
Methods: A total of 70 staff were evaluated using Queen's college step test, N20 body composition analyzer, SECA scale, RS800CX Polar pacemaker. Descriptive statistics and analytical tests including ANOVA and Pearson correlation were used. The data was analyzed using SPSS 20.
Results: Body Mass Index (BMI) and fat percentage (Fat%) of employees were beyond the optimal range, but Waist to Hip Ratio (WHR) were in the range. Also, the average Maximum Volume of Oxygen consumption (VO2max) were 42/1±62/33 mL/kg/min and the average of working capacity (maximum Physical Work Capacity: PWCmax) were 16/63±4/46 kcal/min.
Conclusion: The results indicated that the level of some physical characteristics is inappropriate, physical fitness is poor and individual capabilities and job requirements are not in balance. Using standardized recruitment tests, providing the possibility of sports activities (by organizations) and finding integrated indicators that simultaneously take into account the physical, mental, social and environmental capabilities of individuals to determine work capacity (by researchers), can be facilitating steps to establish an ergonomic balance in the workplace.
Ghazale Sadeghzade, Somaye Rahmati, Fatemeh Sadeghi, Amjad Mohammadi Bolbanabad, Ebrahim Darvishi,
Volume 9, Issue 2 (Iranian Journal of Ergonomics 2021)
Abstract
Background & Objectives: The pandemic and the crisis caused by the COVID-19 have challenged health care organizations around the world, causing human casualties and health concerns around the world and in Iran. The purpose of this study was to evaluate the mental workload and job burnout of medical employees during the Covid-19 pandemic in Iran.
Method: The present descriptive-analytic research has been conducted on 510 medical and diagnostic staff in the cities of Tehran, Isfahan, and Sanandaj. The mental workload and the job burnout of staff have been evaluated using NASA-TLX software and the job burnout Maslach, respectively. Statistical tests including t-test, ANOVA, and multivariate linear regression were used to analyze the data using a STATA-14 software package.
Results: The mean mental workload of employees associated with patients suffering COVID-19 and those not associated was estimated at 83.7±8.1 and 79.9±9.6 respectively. The mean of job burnout was estimated at 79.6±16.2 and 79.7±16.9, respectively, which were not statistically significant. The results of linear regression showed that being married (coefficient = -6.57, P value=0.003), employment as a Tarh (coefficient = -12.71, P value=0.002), inverse relationship and Work in Isfahan hospitals (coefficient = 21.21, P value<0.001) was directly related to burnout. Women (coefficient = 3.61, P value<0.001), having a relationship with COVID-19 patients (coefficient = 5.9, P value<0.001) had a direct relationship with the amount of mental work.
Conclusion: The mental workload and job burnout in medical employees during the COVID-19 pandemic are high, and warning and the mental workload in employees associated with patients suffering COVID-19 are higher than other employees.
Mis Afrouz Rostampour, Mr Heidar Mohammadi, Mr Razzagh Rahimpour, Mis Fatemeh Sarvi, Mis Elahe Dortaj, Mr Mansour Ziaei, Mis Simin Safarpour, Mr Abdolrasoul Rahmani,
Volume 9, Issue 4 (Iranian Journal of Ergonomics 2022)
Abstract
Background and Objectives: Mental and physical fatigue of airport staff reduces their job standards and productive concentration. The objective of this study was to examine the sleep quality and its effect on cognitive failure and job performance among airport staffs.
Methods: In this descriptive-analytical study, 200 staff of an airport were chosen by simple random sampling method. The data collecting tools were four questionnaires that comprised demographic characteristics, sleep quality, cognitive failures, and job performance. Data was analysed using descriptive statistics and regression tests.
Results: Based on the findings, the mean total scores of the sleep quality, cognitive failures, and job performance were 6.78 ± 3.23, 65.22 ± 20.36 and 39.59 ± 5.59, respectively. The results showed that the mean score of sleep quality in the two areas of sleep latency (1.5 ± 0.82) and sleep duration (1.43 ± 1.05) was higher than other subscales. According to the findings, there was a significant inverse relationship between sleep quality score and cognitive failures score with job performance score (r = -0.195, P < 0.05), While the sleep quality score and cognitive failure score showed a positive and significant correlation (r = 0.389, P < 0.05).
Conclusion: The findings demonstrated a significant relationship between sleep quality and cognitive failure, so that with decreasing this factor, cognitive failure of airport staff also increased and the probability of the human error increased. Therefore, enhancing the sleep quality and comfort by providing ergonomic solutions the cognitive failure in staff and consequently job performance would be greatly prevented.
Gholamabbas Shirali, Abbas Mohammadi, Atefe Elyasigomari,
Volume 10, Issue 2 (Iranian Journal of Ergonomics 2022)
Abstract
Objectives: Psychological parameters are among the most important components in determining the job performance of employees in the workplace and can be strongly affected by the epidemic of infectious diseases like COVID-19. The aim of this study was to investigate the effect of COVID-19 pandemic on mental workload and Occupational burnout of medical staff in Iran.
Methods: This case-control study was performed among the healthcare staff of two hospitals in Tehran province in 2021. All employees working in two hospitals were included by census method. The total number of people studied was 412 personnel. NASA-TLX and Maslach Burnout Inventory questionnaires were used to assess mental workload and burnout, respectively. Data were analyzed using Independent t-test and Chi-square.
Results: The present study results revealed that the mean age, work experience, daily working hours, and body mass index of the studied employees were 36.70 ± 11.48 years, 12.53 ± 7.13 years, 9.64 ± 3.13 hours, and 23.89 ± 4.73 kg/m2, respectively. There was a significant difference between the two groups of cases and controls in the values of mental workload (P = 0.011) and burnout (P = 0.001).
Conclusion: The present study's findings revealed that the prevalence of COVID-19 could increase the values of mental workload parameters and burnout of health care personnel in medical settings. Therefore, control measures and psychological interventions to improve healthcare personnel's mental and physical health during the COVID-19 epidemic are mandatory.
Iraj Alimohammadi, Shahram Vosoughi, Jamileh Abolghasemi, Athena Rafieepour, Seyed Hosein Tabatabaei, Batool Delshadi,
Volume 10, Issue 2 (Iranian Journal of Ergonomics 2022)
Abstract
Objectives: Inappropriate sitting posture on bench can contribute to pain and musculoskeletal disorders in students. Hearing and vision disabilities may be the cause of inappropriate sitting postures among students. Therefore, the aim of the present study was to compare the risk of musculoskeletal disorders in normal and students with hearing abnormalities in Ilam city.
Methods: Twenty students with hearing abnormalities (case) and 40 students with normal hearing (control) from primary schools in Ilam city of both genders were randomly included in the study. The worst recorded sitting posture of students on the bench was evaluated by the RULA method. Digimizer software was used to survey the body angles of the students while sitting on the bench. The used for analyzing the obtained data in 95% confidence interval.
Results: The results of posture evaluation showed that there was a significant difference in rula scores between case and control groups (P = 0.001). Deviation from the natural angles of the body in the case groups was more than the control group (P < 0.001), which has a direct and significant relationship with the increased risk of musculoskeletal disorders.
Conclusion: Musculoskeletal disorders possibility incidence were more common in students with hearing abnormalities compared to typical students which was due to an increase in deviation from the natural angles of the body and inappropriate postures. Given the limitation of the sample size, the present study recommends further research with the same goal and encourages interventional studies to correct the posture of hard of hearing students.
Hamed Yarmohammadi, Mahdi Jahangiri, Moslem Alimohammadlou, Fateme Rahmati,
Volume 10, Issue 3 (Iranian Journal of Ergonomics 2022)
Abstract
Objectives: Planning and scientific policy making is required for the investigation of scientific productions. Scientific productions are published through universities and research centers in the form of articles and research journals. Scientometric approaches are a tool to assess the performance of journals in different fields. The aim of the present study was to investigate the activity of ergonomics journal.
Methods: The current research was a practical objective with the descriptive data collection method, which was conducted with a scientometric approach. The research population consists of all the articles published in ergonomics journal during the years 1392 to 1401. Publish or Perish, Vosviewer and Excel software were used to collect and analyze data.
Results: A total of 296 articles from 724 authors have been published in Ergonomics journal during a 10-year period. The most articles published belonged to Hamadan, Shiraz, Tehran and Shahid Beheshti universities of medical sciences. The most effective authors in this journal were Rashid Heydari Moghadam (with 21 articles), Majid Motamedzadeh (with 20 articles), and Alireza Chubineh (with 15 articles). The most frequently used keywords were skeletal and muscular disorders with a frequency of 39, ergonomics 37 and anthropometrics 15.
Conclusion: According to the results, the number of citations of articles in this journal was at a low level. Therefore, it is suggested to increase the amount of international participation in order to index the journal in international citation databases and increase the citation rate of articles and the visibility of the journal.
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.
Atefeh Elyasi Gomari, Behzad Fouladi Dehaghi, Saeed Ghanbari, Abbas Mohammadi,
Volume 11, Issue 3 (Iranian Journal of Ergonomics 2023)
Abstract
Objectives: Musculoskeletal disorders (MSDs) are widespread and important health and social problems in industrialised society, reducing productivity, increasing treatment costs and affecting the quality of life of workers. The present study was conducted with the aim of investigating the effects of workload, fatigue, sleep quality and physical condition on musculoskeletal disorders among workers in the steel industry.
Methods: The present study is a descriptive and analytical study conducted on a population of 540 workers working in the steel industry in the city of Dezful. Based on simple random sampling, 400 people were selected as samples. The instruments used in this study are the Demographic Information Questionnaire, the Cornell Musculoskeletal Disorders Questionnaire (CMDQ), the Swedish Occupational Fatigue Inventory(SOFI), the Pittsburgh Sleep Quality (PSQI) and the NASA-TLX workload index. The Rapid Entire Body Assessment (REBA) was used. Descriptive statistical indices were used to analyze the data, and the relationships between observed and hidden variables were examined using structural equation modeling (SEM) The data were analyzed at a significance level of 0.05 and in SPSS software version 25.
Results: According to the prevalence of musculoskeletal disorders, back pain ranked first with a mean and standard deviation of 52.39±25.44 and knee pain ranked second with a mean and standard deviation of 46.46±26.45, indicating that the prevalence of these disorders is high among steel industry workers. The results of the correlation analysis showed that there is a positive and significant relationship between workload, fatigue, sleep quality and body condition and musculoskeletal disorders (p<0.05). The RMSEA index of less than 0.1 shows that the model proposed in this study fits well and demonstrates the role of workload variables, fatigue, sleep quality and body position in the direct and indirect causation of musculoskeletal disorders.
Conclusion: The results of this study show that improving workplace ergonomics, reducing workload and fatigue, and improving sleep quality can reduce the likelihood of musculoskeletal disorders in workers.
Hamed Yarmohammadi, Mehdi Jahangiri, Elham Arab Mokhtari,
Volume 11, Issue 3 (Iranian Journal of Ergonomics 2023)
Abstract
Objectives: A significant indicators of progress and development is the publication of books within any scientific domain. Ergonomics, a critical field associated with human and occupational health, contributes to enhancing productivity and the health level of employees. The present study aims to investigate the state of production and publication of ergonomics books in Iran.
Methods: The current study employed a descriptive approach and content analysis with a bibliometric perspective. The research population encompaased all ergonomics books registered on the National Library website. To access relevant books, searches were conducted without temporal limitations using keywords such as ergonomics, human factors engineering, and other related terms. The collected data were then entered into a pre-designed form in Excel software and, in the final stage, were analyzed using descriptive statistics.
Results: In total, 313 book titles in the field of ergonomics have been published between the years 1989 to 2023, indicating an increasing trend in the publication of books in this area. The highest frequency was for authored books, accounting for 78.27 percent of the publications. Mohammad Amin Mououdi, Majid Motamedzadeh, and Alireza Choobineh were the most active authors in this field. The subject areas of ergonomics principles and application, occupational ergonomics, and human factors engineering had the highest frequency. Fanavaran publications held the highest rank among all publishers. In total, 38 book titles reached multiple editions.
Conclusion: The results of the current study signify an upward trend in book publication within the field of ergonomics in Iran. However, there is a need for more attention from authors in some specializations of this science, including occupational biomechanics, urban ergonomics, ergonomics in domestic settings, and ergonomics for children. Additionally, there is a notable lack of focus on the publication of electronic books in this scientific field. Therefore, to give more consideration to the advantages of electronic books and consider their publication.
Abbas Mohammadi, Behzad Fouladi Dehaghi, Fatemeh Assadian, Saeed Ghanbari,
Volume 11, Issue 4 (Iranian Journal of Ergonomics 2024)
Abstract
Objectives: Cargo workers at Ahvaz Airport in Ahvaz, Iran are at risk of musculoskeletal disorders. In this regard, the present study aimed to investigate their carrying out tasks and postures.
Methods: In this descriptive-analytical study, the census method was used to select 21 cargo workers in Ahvaz Airport. Task analysis was carried out by Hierarchical Task Analysis (HTA) and Quick Exposure Check (QEC). Moreover, the Manual Handling Assessment Charts were used to evaluate the manual load. The tools employed in this study included observation, photography, and a Cornell Musculoskeletal Disorder Questionnaire (CMQD) questionnaire. Statistical calculations were performed in SPSS (version 16) and Spearman's correlation coefficient for the variables.
Results: Each of the cargo workers of Ahvaz airport moves an average of 400 bags per shift. Spearman's correlation coefficient showed a significant relationship between musculoskeletal disorders and the variables of age, height, and Body Mass Index with values of 0.002, 0.005, and 0.003, respectively. The QEC method was used to observe the worst postures with a numerical score between 50 and 70, which were related to the standing posture at the flat roller and the sitting posture in the aircraft cargo. The examination of the CMQD questionnaire revealed that 61.6%, 65%, and 62% of diseases were related to shoulder, arm, and back, respectively.
Conclusion: After job analysis by the HTA method and evaluation of the results through the QEC method, it was determined that loading and arranging luggage in the cart and cargo were the most risky tasks. Both the MAC and QEC methods also indicated the necessity of an immediate change in the process of moving luggage.
Behzad Fouladi Dehaghi, Abbas Mohammadi, Marzieh Sadeghian, Maryam Tayebi, Azarnoosh Aryankia, Saeed Ghanbari,
Volume 12, Issue 1 (Iranian Journal of Ergonomics 2024)
Abstract
Objectives: The present study aimed to assess the prevalence of musculoskeletal problems related to mobile phone usage and provide corrective solutions for dental students of Jundishapur University of Medical Sciences, Ahvaz.
Methods: The current study was conducted based on an analytical cross-sectional design. In order to collect relevant data, such as the presence of pain in the upper limbs, back, and neck, questionnaires and instrumental methods were used. Students were examined in two groups: the first group included 150 dental students up to the 4th semester, and the second group encompassed 150 dental students from the 5th semester onwards (3rd, 8th, 5th, and 6th year). Data collection instruments were demographic characteristic form, nomophobia questionnaire (NMP-Q), neck disability index (NDI), and Cornell hand discomfort questionnaire (CHDQ).
Results: According to the results of the present study, the prevalence of nomophobia among dental students of Jundishapur University of Medical Sciences in Ahvaz was at an average level. The mean NDI score was 16.20, and the mean pain score among the students was 1.72. Moreover, 46.5% of students had pain in the hand area, and the highest amount of pain was reported in the F area. The mean score of Cornell's musculoskeletal disorders was reported as 2.72.
Conclusion: Examining the relationship between the pain area and the year of entry to the university demonstrated a significant relationship between the year of entry to the university and the pain area. In this regard, the incoming students 2021-22 had the greatest amount of pain. According to the results of the corrective intervention on skeletal disorders in the wrist and neck region, the mean scores of the variables increased significantly after the intervention and corrective measures.
Farahnaz Dastranj, Phd Ali Mohammadi, Hassan Sadeghi Naeini, Hanieh Nikoomaram, Reza Azizinezhad,
Volume 13, Issue 1 (Iranian Journal of Ergonomics-In Press 2025)
Abstract
Background and Objectives: Participatory ergonomics, with its focus on the active involvement of stakeholders in designing and improving work systems, can be proposed as a key strategy for sustainable environmental management. This study aims to explore the mechanisms of integrating ergonomic principles and employee participation to elucidate how environmental sustainability can be achieved in workplace settings.
Methods: This descriptive-analytical study was conducted in an Iranian automotive industry. The participatory ergonomics program involved a 14-member expert team through weekly sessions consisting of two hours of theoretical training and one hour of practical application over a three-month period. The primary objectives of the program encompassed comprehensive training on ergonomics checkpoints established by the International Labour Organization (ILO), integration of ergonomic principles with environmental sustainability considerations, and development of practical competencies to implement acquired knowledge in actual workplace environments.
Results: Following the completion of the participatory ergonomics program and a thorough assessment of workplace issues, the ergonomics team successfully developed fifty practical recommendations, 20% of which addressed environmental concerns. Through six months of sustained collaboration between workers and management support, ten of the proposed recommendations were implemented.
Conclusion: The application of participatory ergonomics principles, with its emphasis on stakeholder engagement in work system design, can serve as a pivotal strategy for sustainable environmental management. This approach not only enhances the physical and psychological well-being of employees but also establishes an inseparable connection between technology, humans, and the environment through reducing occupational stress and natural resource consumption. Undoubtedly, interdisciplinary research in ergonomics and environmental sustainability can play a strategic role in achieving balanced development for future generations.
