Showing 10 results for Fatigue
Marziye Abbassinia, Farogh Mohammadian, Mohammadreza Monazam, Somaye Mahmoodkhani , Mahdi Asghari, Navid Ghaemian,
Volume 4, Issue 4 (2-2013)
Abstract
Background: High levels of fatigue in the workplaces can lead to reduced productivity, and increase the risk of accidents and injuries. Purpose of this study was to assess and compare the fatigue levels among fixed-dayshift and rotating-shift workers of a rolling mills and steel production company in tehran.
Methods: The study included 180 workers with fixed- and rotating-shift schedules. The method involved in our survey data collection was using standard questionnaires by face-to-face surveys.
Results: Results showed that maximum level of fatigue for both groups is 4. Fatigue level between fixed-day shift and rotating-shift workers was statistically significant the degree of fatigue was higher in rotating shift workers. All symptoms associated fatigue in rotating shift workers were more severe than other, and statistically was significant. Comparison between tasks showed the most exhausting task is warehouse.
Conclusion: Results show that level of fatigue is high in the company's personnel, so adopting proactive measures such as reducing working hours, doing regular rest and exercise during working time, paying sufficient attention to humanitarian needs and improving work system can be helpful.
Gholamreza Sharifi, Alireza Babaei, Farideh Keykhosravi,
Volume 5, Issue 1 (5-2013)
Abstract
Background: Fatigue is an important inhibiting factor in human performance, so with rising aerobic power could be overcome individual fatigue. Based on the importance of maximum oxygen consumption at fatigue threshold, the purpose of this study was to evaluate changes in temperature of the maximum rate of oxygen consumption and time to exhaustion in workers of spinning factory.
Methods: In this quasi-experimental study, maximum rate of oxygen consumption in 30 participants in three series was measured: A) Before running Strand and Kankany step test at the temperature of 25 ° c, B) After running Astrand and Kankany step test the temperature of 25 ° c and C) 48 hours later, at the temperature of 40 ° c. For data analysis SPSS (version18) was used.
Results: Results indicated that the mean maximum oxygen consumption in Astrand step test in temperature of 25 ° c and 40 °c was 55.1±6.2 and 50.8±5.6 respectively, and for Kankany test was 31.2±1.8(25 ° c) and 30.4±0.81 (40 ° c). Therefore there were significant difference between heart rate average, maximum rate of oxygen consumption and amount of work done in two different temperatures in Strand step test (p<0/05), Also in Kankany test, significant difference observed between average of heart rate and the amount of work done at the two temperatures (p <0/05), but there was no significant difference between the maximum oxygen consumption at two temperatures.
Conclusions: The overall results of this study showed at temperature of 40 ° c, the maximum rate of oxygen consumption was less than 25 ° c. In other word, in higher temperatures, the maximum rate of oxygen consumption was decreased.
N Mahdavi, M Motamedzade, Aa Jamshidi, A Moghimbeigi, R Heidari Moghaddam ,
Volume 5, Issue 3 (11-2013)
Abstract
Background: Nearly 8.5 million of employees in Iran are carpet-weavers and musculoskeletal disorders especially in their shoulder region are prevalent. As regards muscle fatigue is a risk factor for musculoskeletal disorders its reduction may improve health promotion among the weavers and also lead to improved quality and quantity of this national product. Muscle fatigue manifestations in electromyography are mean power frequency decrease and root mean square increase in time. This study aimed to assess muscle fatigue in the upper trapezious of carpet-weavers.
Methods: In this cross-sectional study, regarding inclusion and exclusion criteria, 12 carpet-weavers (9 females, 3 males) were selected. During 210 minutes carpet weaving, data were collected via surface electromyography and body part discomfort rate scale. Electromyography parameters and body part discomfort rate scale were analyzed with repeated measures ANOVA (sex and experiences as independent variable).
Results: During 210 minutes carpet weaving, mean power frequency in right and left upper trapezius decreased and P-value=0.002 and P-value=0.001 was significant respectively, but root mean square and body part discomfort rate changes were not significant.
Conclusion: Assessment of objective and subjective development of muscle fatigue, showed significant decrease in mean power frequency, but root mean square and body part discomfort rate have not significant changes. No obvious significant correlation was found between objective and subjective muscle fatigue assessments.
Maryam Maghsoudipour, Mostafa Pouyakian, Ramin Moradi,
Volume 8, Issue 2 (8-2016)
Abstract
Introduction: Fatigue and sleepiness can negatively affect driver’s consciousness and their cognitive function. Traffic accidents due to sleepiness are more common among people who work more than 60 hours a week, or have irregular working hours or night shifts.
Methods: Last available literature and the most authentic sources were assessed and different aspects of the issue were evaluated.
Results: Drowsy driving increases the risk of a crash four times. Fatigue reduces performance in tasks that require alertness, manipulation and retrieval of stored information. There are several instruments to measure drivers’ sleepiness including Multiple Sleep Latency Test, Maintenance of Wakefulness Test, Epworth Sleepiness Scale, Karolinska Sleepiness Scale, and Stanford Sleepiness Scale.
Conclusion: Careful consideration and scientific approach to professional drivers’ work schedule to prevent sleepiness, fatigue, and driving for long and consecutive hours and also the study of underlying sleep diseases, are highly important.
Maryam Maghsoudipour, Mohammad Parkhoo, Samaneh Hosseinzade, Mohammad Ansari, Ashkan Karbasi,
Volume 10, Issue 3 (12-2018)
Abstract
Objective: In this study we assessed the effect of bright light emitted by light box on fatigue, and sleepiness in nurses.
Methods: 44 healthy female shift work nurses were allocated into two groups of intervention and control. In the first stage, bright light was emitted to the nurses in the intervention group by the light box, and bright light was not emitted to the control group. In the next stage (one month later), we emitted bright light to the control group of first stage and vice versa (cross over). Main outcome measure, we assessed after intervention were fatigue and sleepiness. We measured fatigue (Visual Analogue Scale) and, sleepiness (Karolinska Scale), every hour, during next 24 hours.
Results: Almost all the time during 24 hours of the assessment of Visual Analogue Scale the trend of changes in two groups were in opposite direction. The mean value of two groups were statistically different. In addition, about Karolinska Sleepiness Scale, the effect of intervention on the mean values of KSS during 24 hours was significant and the mean values in two groups were significantly different and the trend of changes in two groups were in opposite direction.
Conclusion: The bright light exposure in nurses resulted in changing the trend of fatigue in opposite direction compared to the controls. The minimum of fatigue occurred at 4 am which was time of maximum fatigue in controls. Also, the trend of changes of KSS was in opposite direction in cases and minimum sleepiness was at 4 am.
Jalil Derakhshan, Majid Motamedzade, Rostam Golmohammadi, Mohammad Babamiri, Maryam Farhadهan,
Volume 10, Issue 4 (3-2019)
Abstract
Introduction: Fatigue is the exhaustion of the body or spirit that can be caused by stress, excessive work, drug use, or physical or mental illness. Fatigue is a factor in reducing productivity and incidents. Therefore, measuring is important. The aim of this study was to determine the fatigue measurement measurements based on objective and objective indices.
Materials and Methods: A cross-sectional study was performed on 120 male and female students. By simulating the real environment of each person in the 50 and 70dB pressure levels for 40 minutes, before and after exposure to noise, the amount of mental fatigue was measured using the subjective index Visual Analog Scale (VAS) and the objective index Continuous performance test (CPT) and its results were analyzed by paired t-test and Spearman correlation coefficient in SPSS20 software.
Results: Measurement results with both self-declaration scale and continuous performance test showed that mental exhaustion increases significantly after exposure to the mentioned pressure level, but the results of the two methods are not consistent with each other.
Conclusion: Considering that the VAS self-declaration scale is a subjective method, it seems that the mismatch of the two methods is more related to the ineffectiveness of this scale. Therefore, it is suggested that re-examination be done with more precise methods such as electroencephalogram.
Ali Salehi Sahl Abadi, Sahel Khakkar,
Volume 10, Issue 4 (3-2019)
Abstract
Introduction: The importance of assessing and identifying ergonomic risk factors in the workplace among office workers has increased with the increase in occupational tasks of computer and increasing the risk of physical and mental disorders among its users. One of these factors is the usability of computer hardware and software. The purpose of this study was to evaluate the applicability of office automation software and to measure the fatigue and burnout of employees in an office and determine their correlation.
Methods: In this study, in one of the health centers of Tehran city, staff fatigue and burnout and their use of office automation software by using Multidimensional Job Fatigue Inventory (MFI-20), Maslach Burnout Inventory (MBI) The standard questionnaire was used to evaluate the usability of the software. Data were analyzed by SPSS 23 software.
Results: The findings of this study showed that automation software is very useful for most users. According to the findings of this study, there was a significant negative correlation between software usability and emotional exhaustion dimensions and reduction of personal inadequacy, general fatigue, physical fatigue with correlation coefficients (-0.228, -0.511, -0.372 and -0.287). There was. The greater the usability of the software, the lower the level of employee fatigue and fatigue.
Conclusion: The applicability of job software is effective in fatigue and fatigue of employees. So the usable design of such web-based software should be considered by office systems and software developers and software developers.
Mehrzad Ebrahemzadih, Sara Jam Barsang, Raziyeh Soltani Gerdfaramarzi, Hassan Ashrafzadeh, Gholamhosein Halvani, Marzieh Ebrahimzadeh,
Volume 12, Issue 2 (10-2020)
Abstract
Introduction: Shift work is one of the threatening factors on Health. The important effects of shift work can be noted chronic fatigue. This study aimed to determine the association between Shift Work and chronic Fatigue among Educational Hospital Nurses.
Materials and Methods: This cross-sectional study was carried out in Educational Hospital in Yazd. Using Stratified sampling technique, 200 Nurses were selected. The data was collected by using questionnaires of Demographic and chronic Fatigue. The data was analyzed using SPSS20 software and applying chi-square and Pearson correlation coefficients.
Result: 57 nurse’s man and 143 nurse’s women Participated in this study. There wasn’t a significant relation between the Gender, marital status, work experience and education level with chronic Fatigue. Because Between the age group with chronic fatigue there was a significant difference. Analysis of the results of this study showed that significant relation between Shift Work and chronic Fatigue.
Conclusion: Shift work can be affected on chronic fatigue that causes the difference in constant and non-constant shifts. So, chronic fatigue in people with constant shifts less than non-constant shifts.
Atefeh Azizi, Mohsen Jalilian, Zahra Bahrami, Hojatollah Kakaei, Maedeh Kamalvandi,
Volume 14, Issue 3 (12-2022)
Abstract
Introduction: Shift work is one of the social phenomena that has its roots in the history of human origin and still exists today for economic and technological reasons. Due to the complications of shift work, the present study was conducted to investigate job fatigue, quality of life, and sleep of shift staff working in Ilam Electric Distribution Company.
Materials and Methods: In this descriptive-analytical study, all shift workers of Ilam Electric Distribution Company were selected. Data collection tools included the Swedish Job Exhaustion Questionnaire, Quality of Life (SF-36), the Insomnia Assessment Questionnaire, and the Survey of shift workers (SOS). SPSS software version 26 was used to analyze data using independent sample T-Test, One-way ANOVA, and Chi-square tests.
Results: Pearson correlation test showed that there was a direct and positive correlation between age and physical function (r = 0.439; p = 0.022), smoking and sleep problems (r = 0.528; p = 0.006), and education and limitation of the role of emotional problems (r = 0.382; p = 0.049). Also, the was a significant indirect correlation was found between age and physical role limitation (r = - 0.501; p = 0.008), shift work with satisfaction with individual life (p <0.045), social life (p <0.038), family life (p <0.023) and family dissatisfaction.
Conclusion: shift working has adverse effects on family satisfaction, circadian rhythms, digestive performance, and mental health. It is suggested that managers be more careful about working hours, work shifts, and rest times.
Fatemeh Mokhtari, Vahid Hemmati, Amir Firozan, Seyed Yousef Torabian,
Volume 16, Issue 2 (6-2024)
Abstract
Introduction: occupational accidents are caused by ignorance of occupational health and safety recommendations, due to the high rate of accidents in the industry of cutting and extracting wood from the forest, this study is necessary to evaluate job satisfaction.
Materials and Methods: In this research, job satisfaction was used as a dependent variable and independent variables included age, educational and employment status, type of work, and duration of employment. To determine the conditions of excessive fatigue among forest workers, the index of symptoms of excessive fatigue was used. The number of 100 workers was investigated by a questionnaire, the comparison of independent variables affecting the satisfaction or dissatisfaction of workers with work using discriminant analysis and the Wilks Lambda coefficient, and the comparison of the average opinions of people from different work groups regarding the work situation using Friedman's test was performed.
Results: The four variables of duration of employment, age status of workers, employment status, and type of work are suitable for separating two groups satisfied with work and dissatisfied with work. The assessment of complaint rate showed that questions I take care of my family, I am very worried about my health and I am dissatisfied with many things with the highest rates of 84.66%, 70.66%, and 61.33% respectively. They took the complaint to themselves. The results showed that the highest amount of fatigue accumulation index is related to two groups chronic fatigue and general fatigue. The results of the present study show that 47% of forest workers are illiterate in their educational status, which requires a training course for workers to work with cutting tools and machines. The results showed that 41 percent of the people studied liked their jobs.
Conclusion: Personal protective equipment is considered a work tool without which it is impossible to do the desired job. Training classes should be held periodically by the safety department for workers and supervisors when needed.
