Validation of Physiological Strain Index Based on Heart Rate in Experimental Hot Conditions

Heat stress is a common problem in industrial workplaces. Thermal stress is a caused reduces concentration of and fatigue increases individuals and thermal condition can be one of accident risk factors .The purpose of this study was validation of Physiological Strain Index Based on Heart Rate in experimental condition. This Semi experimental study was conducted to 16 male in five different temperature conditions (21, 24,27,30,35ºC) in the climate chamber and on the treadmill with two levels of activity 2.4 kph (light physical activity) and 4.8 kph (medium physical activity).Heart rate was measured to for calculating Physiological Strain Index Based on Heart Rate, rate perceived exertion and questionnaire Heat Strain Score index was measured. The correlations between the indices were evaluated using Pearson correlation test and regression analysis. Pearson correlation test showed a significant correlation between Physiological Strain Index Based on Heart Rate and rate perceived exertion (p≤0.001,r=0.96).also a high correlation was observed between Physiological Strain Index Based on Heart Rate and wet bulb globe temperature (p≤0.001,r=0.90). A very high correlation was observed between Physiological Strain Index Based on Heart Rate and Heat Strain Score Index (p≤0.001, r=0.93). The results of this study showed Physiological Strain Index Based on Heart Rate a suitable method for strain heart evaluation is caused by thermal stress because there was an acceptable correlation with heat stress valid indices

Evaluation of Musculoskeletal Disorders among computer Users in Isfahan

Along with widespread use of computers, work-related musculoskeletal disorders (MSDs) have become the most prevalent ergonomic problems in computer users. With evaluating musculoskeletal disorders among Computer Users can intervent a action to reduce musculoskeletal disorders carried out. The aim of the present study was to Assessment of Musculoskeletal Disorders among Computer Users in Isfahan University with Rapid Office Strain Assessment (ROSA) method and Nordic questionnaire. This cross-sectional study was conducted on 96 computer users in Isfahan university. The data were analyzed using correlation and line regression by test spss 20. and descriptive statistics and Anova test. Data collection tool was Nordic questionnaire and Rapid Office Strain Assessment method checklist. The results of Nordic questionnaire showed that prevalence of musculoskeletal disorders in computer users were in the shoulder (62.1%), neck (54.9%) and back (53.1%) respectively more than in other parts of the body. Based on the level of risk of ROSA were 19 individuals in an area of low risk, 50 individual area of notification and 27 individual in the area hazard and need for ergonomics interventions. Musculoskeletal disorders prevalence were in women more than men. Also Anova test showed that there is a direct and significant correlation between age and work experience with a final score ROSA (

Investigation Effect of Biorhythm on Work-Related Accidents in The Metal Industry (A Short Report)

Biorhythm is one of the newest subjects in the field of cognition of mental ergonomics which can be very effective in reduction of work-related accidents or mistakes with no apparent reason. With evaluating Biorhythm individuals can intervention action to reduce job accidents carried out. Thus, the aim of this study was to determine the relationship Biorhythm and work-related accidents in the metal industry. This research is a cross-sectional and analytical-descriptive in the metal industrial Isfahan city of 120 work-related accidents during 2015. The required information was collected from available documents in HSE unit of the company biorhythm charts were drawn based on a date of accidents and participants birthdays, using natural Biorhythm Software V3.02 Conduct. Finally، the data were analyzed using spss version 20 and descriptive statistics.This study showed that the frequency of accidents in critical days and negative section of physical cycle was more than expected. Also the frequency of accidents in critical days and negative section of emotional and intellectual cycles was less than expected. Most type of injury, including cuts to 35.8 percent and the lowest type of injury was torsion with 5 percent. Most limb injury, hands and fingers with 51.7 percent and the lowest limb injury were back at 2.5 percent. Accidents outbreak in physical cycles was 38.3 percent. These 120 accidents in additionally were causing 120 loss of working days in effect accident. Most percent of loss of working days were for 20 to 30 days with of 39.2 percent. Most percent of loss of working days were for 20 to 30 days with of 39.2 percent. Due to the physical nature of the work activities in the metal industry can be stated that the study showed that in physical work activities, frequency of accidents in critical days and negative section of physical cycle in which the person is not physically ready to do the job was more than expected. Therefore, by training and increasing the knowledge of workers regarding biological cycle and its effects on mental, emotional and physical status, each person effects can make some changes to their work plans during days that they do not feel well, physically or mentally, in order to prevent the likely accidents

Investigation Effect of Shift Work on Job Burnout and Depression, Anxiety, Stress Scale in Military Personnel

Shift work has been recognized as an important tool for organizing of work in developing countries. The disturbed depression, stress accident are the most common health‐related effects of shift work. The military personnel shift worker during work, are exposed to stress and psychological pressure that certainly affect the efficiency of their work. The aim of this study was to Investigation Effect of shift work on job burnout and Depression, Anxiety, Stress Scale in military personnel. This cross-sectional study was carried out on 100 military personnel male in Southern Iran. Respondents were divided into two groups based on their working schedule (50 shift work personnel / 50 day work personnel). Data collection tools were a Depression, Anxiety, and Stress Scale (DASS-21), demographic characteristics and Maslach job burnout questionnaire. Convenience sampling was used as sampling method. Finally, Data analysis was performed with SPSS (version 20), descriptive statistics, One Way Anova test, ANCOVA and t-independent test. The results of showed that shift work has an impact on burnout and DASS-21 and mean obtained score for DASS-21 and job burnout in shift workers are more day work individuals. Analysis of variance test showed significant difference between job burnout in day workers and shift workers and job burnout were more in shift workers. Also significant difference between DASS-21 in day workers and shift workers and DASS-21 was more in shift workers. This study showed that shift work has an impact on burnout and scale DASS-21 shall is taken to Intervention actions in shift works

The Investigation Relationship between Mental Workload and Occupational Fatigue in the Administrative Staffs of a Communications Service Company

Mental workload reflects the level of attention resources required to meet both objective and subjective performance criteria, which may be affected by task demand, external support and past experience. Mental workload and occupational fatigue have been commonly cited as a major cause of workplace accidents. The aim of this study was to investigate the relationship between workload and occupational fatigue in the administrative staffs of a communications service company in Tehran. In this study, 94 employees of the administrative service (69 female and 25 male) were provided with a demographic characteristics questionnaire including age, body mass index (BMI), level of education and work experience. Then the Swedish occupational fatigue inventory questionnaire was used to determine the job fatigue. The NASA-TLX mental workload questionnaire used for assessing mental workload. Finally, Data were analyzed by SPSS Version 20, descriptive statistics, Pearson correlation test and ANOVA test. Results showed that NASA-TLX mental workload in female (59.14) is more than from male (54.56). Also result showed Swedish Occupational Fatigue Inventory (SOFI) in female (30.12) is more than from Male (28.12). Also, the Pearson correlation test showed that there is a significant correlation between NASA-TLX and SOFI (r = 0.76,

The Investigation Relationship between Mental Workload and Occupational Fatigue in the Administrative Staffs of a Communications Service Company

Mental workload reflects the level of attention resources required to meet both objective and subjective performance criteria, which may be affected by task demand, external support and past experience. Mental workload and occupational fatigue have been commonly cited as a major cause of workplace accidents. The aim of this study was to investigate the relationship between workload and occupational fatigue in the administrative staffs of a communications service company in Tehran. In this study, 94 employees of the administrative service (69 female and 25 male) were provided with a demographic characteristics questionnaire including age, body mass index (BMI), level of education and work experience. Then the Swedish occupational fatigue inventory questionnaire was used to determine the job fatigue. The NASA-TLX mental workload questionnaire used for assessing mental workload. Finally, Data were analyzed by SPSS Version 20, descriptive statistics, Pearson correlation test and ANOVA test. Results showed that NASA-TLX mental workload in female (59.14) is more than from male (54.56). Also result showed Swedish Occupational Fatigue Inventory (SOFI) in female (30.12) is more than from Male (28.12). Also, the Pearson correlation test showed that there is a significant correlation between NASA-TLX and SOFI (r = 0.76,

Evaluation of Musculoskeletal Disorders among computer Users in Isfahan

Along with widespread use of computers, work-related musculoskeletal disorders (MSDs) have become the most prevalent ergonomic problems in computer users. With evaluating musculoskeletal disorders among Computer Users can intervent a action to reduce musculoskeletal disorders carried out. The aim of the present study was to Assessment of Musculoskeletal Disorders among Computer Users in Isfahan University with Rapid Office Strain Assessment (ROSA) method and Nordic questionnaire. This cross-sectional study was conducted on 96 computer users in Isfahan university. The data were analyzed using correlation and line regression by test spss 20. and descriptive statistics and Anova test. Data collection tool was Nordic questionnaire and Rapid Office Strain Assessment method checklist. The results of Nordic questionnaire showed that prevalence of musculoskeletal disorders in computer users were in the shoulder (62.1%), neck (54.9%) and back (53.1%) respectively more than in other parts of the body. Based on the level of risk of ROSA were 19 individuals in an area of low risk, 50 individual area of notification and 27 individual in the area hazard and need for ergonomics interventions. Musculoskeletal disorders prevalence were in women more than men. Also Anova test showed that there is a direct and significant correlation between age and work experience with a final score ROSA (p<0.001). The study result showed that the prevalence of MSDs among computer users of Isfahan universities is pretty high and must ergonomic interventions such as computer workstation redesign, users educate about ergonomic principles computer with work, reduced working hours in computers with work, and elbows should be kept close to the body with the angle between 90 and 120 degrees to reduce musculoskeletal disorders carried out

Evaluation of Musculoskeletal Disorders in Household Appliances Manufacturing Company

Work-related musculoskeletal disorders are the most prevalent work-related disorders and injuries and being the main cause of disability. This study was conducted to assessment of the prevalence of musculoskeletal disorders in worker company household appliances production. Posture analysis was evaluated by OWAS method and prevalence of musculoskeletal disorders by Nordic questionnaire. With evaluating musculoskeletal disorders among company household appliances production can intervention action to reduce musculoskeletal disorders was carried out. This cross-sectional study was performed on 100 workers of the appliance manufacturing industry. These Individuals were included 15 persons from foam injection workshop, 17 persons from molding workshop, 17 operators of presses, 17 persons from packaging, 17 person from cutting unit and 17 operators of rivet. The Nordic questionnaire was completed by Individuals for the organs of arm, back, leg and wrist and Posture analysis was performed by OWAS method. The data were analyzed using Spss software version 18 and descriptive statistics and Anova test. Nordic questionnaire results revealed that highest disorders were observed in the arm (25%), back (22%) and leg (21%). Also Anova test showed that was observed a significant correlation respectively between age and work experience with the prevalence of musculoskeletal disorders (p<0.02) (p<0.01). The results showed based on the level of risk OWAS for each job respectively, the highest level of risk associated with foam injection unit, packaging and cutting unit (risk level 4) and the lowest level of risk associated with molding workshop unit (risk level 2).The results of this study showed that household appliances Manufacturing workers due to the nature of their jobs are at risk of musculoskeletal disorders and Ergonomic interventions to do such as workstation redesign, reduced working hours, cycle of rest-work development

Assessment of safety management in different wards of AL Zahra hospital in Isfahan city in 2013

Introduction: Since hospitals give their services to a huge number of people most of whom are sick and disabled and also because they have many expensive and modern equipment and facilities, any negligence regarding the standards of safety management leads to severe damages including financial ones. This may even result in irrecoverable consequences such as their clients’ Death. So, this investigation was conducted to assess the condition of safety management in Isfahan’s AL Zahra hospital. Method: This cross-sectional and descriptive-analytical project was conducted in different wards of AL Zahra hospital. In this study, the hospital’s units under the investigation were determined and no sampling method was used. The data collection was done by a checklist and questionnaire. They had content validity which was confirmed by the viewpoints of psychiatric and behavioral sciences specialists. The data were analyzed through SPSS (version 16) using Kruskal Wallis statistical tests. In this study, the level of significance was 0.05. Results: After assessing safety management in Safety and Accidents Committee and calculating the score average of the studied factors, safety management organization and also hospital’s organizational constructs sectors were 74.43±13.47 and 65.48±12.25, respectively. Their safety management condition was assessed appropriate. Surgery ward was also assessed appropriate regarding the principles of safety management with a mean score of 77.36±13.84. No significant difference was found among the studied standards in these units according to Kruskal Wallis statistical test (P value>0.05). Conclusion: The results showed that the condition of safety management in this hospital was acceptable, in general. However, it is necessary to do the following interventions to improve safety condition; training managers and staff, setting and observing the rules and disciplines of safety, regular monitoring of safety issues and considering safety principles implementation as an important factor in evaluating and ranking of hospitals