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- • Academic Rank: Associate Professor, Shahid Sadoughi University of Medical Science. • Scientific position: o Member ... more• Academic Rank: Associate Professor, Shahid Sadoughi University of Medical Science.
• Scientific position:
o Member of Industrial Diseases Research Center
o Member of Occupational Medicine Center of Excellence
o Member of Occupational Medicine Quarterly Journal
o Member of Editorial board of Occupational Medicine Quarterly Journal
o Traning in Yazd Shahid Sadoughi University of Medical Sciences
o Associate Professor of Yazd Shahid Sadoughi University of Medical
• Executive position:
o Deputy of Industrial Diseases Research Center
o Administrative Manager of Occupational Medicine Quarterly Journal
o Research deputy of occupational medicine departmentedit
Objective: Noise and solvents are two occupational exposures with possible hearing effects. We aimed to assess the effect of exposure to noise and organic solvents on acoustic reflex. Methods: This cross-sectional study was conducted on... more
Objective: Noise and solvents are two occupational exposures with possible hearing effects. We aimed to assess the effect of exposure to noise and organic solvents on acoustic reflex. Methods: This cross-sectional study was conducted on three groups: 80 workers exposed to impermissible amounts of organic solvents (mainly styrene), 78 workers exposed to loud noise and 67 subjects as a control group. The hearing status of the subjects was assessed by pure tone audiometry and acoustic reflex. Data were analysed by SPSS (ver. 20) (SPSS Inc., Chicago, IL) using Student's t-test, chi-square test and ANOVA. Results: The mean hearing threshold at high frequencies was significantly higher in the noise group, followed by the solvent group, compared to the control group (p<.0001). Mean acoustic reflex was higher in the solvent group, followed by the noise group (p<.05). The frequency of absent acoustic reflex was also significantly higher in noise and solvent groups than in controls (p<.05). Conclusion: This study suggests that exposure to organic solvents alone without simultaneous noise, despite a normal hearing threshold, can affect acoustic reflex, so conducting preventive hearing tests such as acoustic reflex test, in workers exposed to organic solvents, may be one of the effective ways to prevent occupational hearing loss in these workers.
Objective: To investigate factors affecting the duration of return to work after COVID-19 in hospitalized people. Methods: This was a cross-sectional study of 320 working people (295 men and 25 women) hospitalized in Yazd province in... more
Objective: To investigate factors affecting the duration of return to work after COVID-19 in hospitalized people. Methods: This was a cross-sectional study of 320 working people (295 men and 25 women) hospitalized in Yazd province in Iran, due to COVID-19 from September 2020 to March 2021. The required information was taken via phone interview using a questionnaire designed by the researchers. Data were analyzed using SPSS software. Results: The average duration of absenteeism was 31.67±33.47 days. A significant relationship was observed between absenteeism duration and these factors: age, marital status, number of dependents, underlying diseases, job, type of employment, workplace respiratory exposures, observing hygienic issues in the workplace, lower respiratory symptoms, duration of hospitalization and medication, and pulmonary and mental complications. After adjusting the confounding factors, only three factors were significantly related to delaying return to work more than 21 days: Number of days of medication use, the presence of pulmonary and psychological complications. Conclusion: Disease severity in terms of days of medication use for COVID-19 infection after discharge, and the presence of pulmonary and psychological complications may directly affect return to work after COVID-19.
Background: Physical and emotional manifestations of premenstrual disorder cause increased absenteeism, decreased productivity, and decreased work-related quality of life. Objective: Due to the relatively high prevalence of premenstrual... more
Background: Physical and emotional manifestations of premenstrual disorder cause increased absenteeism, decreased productivity, and decreased work-related quality of life. Objective: Due to the relatively high prevalence of premenstrual disorders in Iran and limited studies on its work-related problems, this study investigated the relationship between premenstrual disorders and work performance in working women. Materials and Methods: This cross-sectional study was conducted on 358 working women (teachers and industrial workers) in Yazd, Iran, from July 2019 to January 2020. Data were collected using premenstrual symptom screening tool, the work productivity and activity impairment questionnaire (a modified version), and functional work capacity questionnaires. Women were classified into 2 groups: women with and without premenstrual disorders. Productivity, functional capacity, and ability to perform activities of daily living were compared between groups. Results: Among 358 participants, 121 women (33.8%) had premenstrual disorders. The prevalence of premenstrual disorders was significantly higher in teachers than workers (0.41% vs. 24.7%, respectively) (p = 0.002). The work results showed a worse score in the group with premenstrual disorder than the other group and teachers compared to workers (p < 0.001). Conclusion: This study showed a significant association between premenstrual disorders and worse work productivity, functional work capacity, and ability to perform activities of daily living. Teachers have a higher prevalence of premenstrual disorders and worse work performance than workers, which can be due to higher education levels, work stress, more complex tasks, and increased work responsibility in teachers.
Background and aims: The prevalence of the coronavirus disease 2019 (COVID-19) was associated with many psychological consequences among personnel of hospitals. The aim of this study was to investigate the relationship between COVID-19... more
Background and aims: The prevalence of the coronavirus disease 2019 (COVID-19) was associated with many psychological consequences among personnel of hospitals. The aim of this study was to investigate the relationship between COVID-19 anxiety and depression, stress, and anxiety among administrative staff and nurses. Methods: This is a cross-sectional study that was conducted in January 2022. All 100 nurses and administrative staff of a hospital participated in this study. Demographic information questionnaires, Corona Disease Anxiety Scale, and Depression Anxiety Stress Scale (DASS-21) were employed to collect data. Statistical analysis was performed using SPSS software version 24. Results: The mean±standard deviation age of participants was 33.53±6.73 years. The median (interquartile range) disease anxiety in nurses and administrative staff was equal to 7 (4.25) and 10 (8), respectively. Further, COVID-19 anxiety was significantly higher in administrative staff (P=0.001); moreover...
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Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the... more
Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the effects of welding fumes on lung function and respiratory symptoms among welders of an automobile manufacturing plant in Iran. This historical cohort study assesses 43 male welders and 129 office workers by a questionnaire to record demographic data, smoking habits, work history and respiratory symptoms as well as lung function status by spirometry. The average pulmonary function values of welders were lower relative to controls with dose-effect relationship between work duration and pulmonary function impairment. The prevalence of chronic bronchitis was higher in welders than controls. Our findings suggest that welders are at risk for pulmonary disease.
Research Interests: Medicine, Linear models, Iran, Automobiles, Humans, and 15 morePubmed, Male, Lung Diseases, Lung, Prevalence, Questionnaires, Adult, Occupational Exposure, Odds ratio, Pulmonary function test, Occupational Diseases, Logistic Models, Chronic Bronchitis, Case Control Studies, and Pulmonary function testing
Introduction: Nursing jobs are among the occupations experiencing high levels of stress. Level of psychological well-being and coping style with stressful situations among nurses has large impact on their job performance. Limited... more
Introduction: Nursing jobs are among the occupations experiencing high levels of stress. Level of psychological well-being and coping style with stressful situations among nurses has large impact on their job performance. Limited information exists about the relationship between coping styles and psychological well-being among nurses, so the present study examined the way of coping and the level of psychological well-being as well as their relationships among nurses. Methods: In this correlational study, 100 nurses from Shahid Sadoughi University of Medical Sciences were selected by multi-stage random sampling in 2012. Lazarus and Folkman's coping styles and Ryff's psychological well-being Questionnaires were completed by self-report method. Collected data were entered software SPSS ver. 13 and then analyzed using Pearson correlation test. Results: The results showed EFCSwere more used but PFCSstyle was less used with a little difference by mean (SD) of 87.91 (10.76) vs. 73.12 (12.15). Between EFCSand some psychological well-being dimensions such as purpose in life (P=0.01, r= -0.28) and personal development (P=0.03, r=-0.024), a significant negative association and between PFCSstyle and purpose in life, a significant positive relationship was found (P=0.006, r=0.31). Conclusion: Considering that PFCSstyle is more effective in solving problems and job stress, as well as, the increased use of EFCSis associated with adverse health consequences, improvement of nurses' coping strategies to cope better with stressful events by skill training and promotion of nurses' psychological well-being level is recommended.
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Aim: This study was conducted to examine the effect(s) of combined exposure to whole-body vibration (WBV) and noise in railway workers. Methods: In this historical cohort study, train drivers with combined exposure to WBV and... more
Aim: This study was conducted to examine the effect(s) of combined exposure to whole-body vibration (WBV) and noise in railway workers. Methods: In this historical cohort study, train drivers with combined exposure to WBV and impermissible noise as the case group (n = 85) and shunters with just exposure to impermissible noise as the control group (n = 30) were recruited. The hearing threshold at the conventional audiometric frequencies was measured in both the groups, and the standard threshold shift (STS) and hearing threshold shift at higher frequencies were calculated. Data were analyzed by SPSS version 20 using t-test, Chi-square, and paired t-test. Results: There was no significant difference between the groups for age of participants as well as work duration and body mass index. Increased hearing threshold was most frequently observed at 3000, 4000, and 6000 Hz. STS and hearing threshold shift at high frequencies were observed at 6.0% and 3.3%, and 8.2% and 26.7% in train drivers and shunters in the left ear, respectively, but these were not statistically significant. Conclusion: Despite the unauthorized exposure to noise and WBV of train drivers, the STS and hearing threshold shift at higher frequencies were not more prevalent compared with the shunters who were exposed only to impermissible noise levels; hence, no association was found between noise and vibration in this study.
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Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by... more
Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by industrial equipments, we assessed the effects of noise on hearing of tile industry workers. Methods: This cross-sectional study was done on 372 workers exposed to noise level of ≥85 dB in a tile factory in Yazd. After clinical examination and completing the questionnaire, audiometry was done by an audiologist for all. Data was then analyzed using SPSS software. Results: Our data showed mean age and work duration was 32.2 ± 6.9 and 9.5 ± 6.4 years respectively. Mean hearing thresholds for both ears were higher in 4000 and then 8000 Hz, as well as in higher frequencies rather than lower ones. Also, left ear showed more sensitivity than right ear. There was a significant relationship between hearing threshold and age and work duration (p<0.001). Conclusion: Our findings showed that exposure to noise in tile industry increases mean hearing thresholds in higher frequencies especially for 4000 Hz, while age and work duration are important factors.
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Background and Objective: Reports have shown a link between dysfunctional beliefs about sleep and sleep disorders. We investigated the frequency of dysfunctional beliefs about sleep in three groups of patients suffering from psychiatric... more
Background and Objective: Reports have shown a link between dysfunctional beliefs about sleep and sleep disorders. We investigated the frequency of dysfunctional beliefs about sleep in three groups of patients suffering from psychiatric disorders (patients with major depression, bipolar disorder, and anxiety). Materials and Methods: In this cross-sectional study, 150 patients with psychiatric disorders referred to psychiatry clinic affiliated to Qazvin University of Medical Sciences, Qazvin, Iran. Fifty patients were selected in each group (anxiety, depression, and bipolar disorder). Two questionnaires of Dysfunctional Beliefs and Attitudes about Sleep (DBAS) and Insomnia Severity Index (ISI) were completed for all patients. Data were analyzed with Student’s t, chi-square, analysis of variance (ANOVA), and Pearson correlation tests. Results: A significant difference was observed between the three groups in the latency to fall asleep at night (P = 0.002) and Pittsburgh Sleep Quality Index (PSQI) ≤ 5 (P = 0.002). Patients with anxiety and bipolar disorder more than other groups believed that insomnia caused loss of life joy (P = 0.010) and the only solution for sleeplessness was medication (P = 0.003), respectively. There was a significant relationship between sleep quality and anxiety (P = 0.030), total sleep time (P = 0.040), sleep latency (P = 0.020), and ISI (P < 0.010) with depression, awakening time during night, and bipolar disorder (P = 0.030). Conclusion: Patients with psychiatric disorders have high frequency of dysfunctional beliefs about sleep. Regarding the relationship between dysfunctional beliefs about sleep and insomnia, future work is needed for better treatment.
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Abstract Background: Noise-induced hearing loss is among the most common occupational diseases and is completely preventable despite being permanent and irreversible. Although management and engineering control are in prior, for some... more
Abstract Background: Noise-induced hearing loss is among the most common occupational diseases and is completely preventable despite being permanent and irreversible. Although management and engineering control are in prior, for some reasons its implementation is difficult in certain circumstances. So, Hearing Protection Devices (HPDs) are often the only method. But most of workers exposed to high level noise do not use them. The aim of this study was to detect factors influencing on usage of HPDs by workers based on Pender's Health Promotion Model and safety climate. Methods: In this study, 121 tile workers who exposed to sounds ≥ 85dB were evaluated. A questionnaire including demographic date, HPDs using frequency, worker's self-efficacy regarding HPDs use as well as workers' perceptions of management's commitment to HPDs use and safety was completed for them. Results: Our research showed that 24% of workers used HPDs for more than 50% of work duration. Only 10% of the workers used it for more than 90% of work duration. There was a significant difference in scores related to "Safety climate" and also one of the items of "HPDs usage barriers" between the group who used HPDs>50% of work duration and the group≤50% (p=0.04 and p=0.06 respectively). Conclusion: Despite exposure to noise and being subject to noise-induced hearing loss, prevalence of HPDs use is low. In this survey, the belief that wearing HPDs is not uncomfortable and safety climate were important factors for HPDs usage. Therefore, manager support for working in safety climate including HPDs use, education of using method and its importance in preventing hearing loss have significant influences on increasing HPDs use
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شزپ شزومآ ـ شخب ناونع هب يك ـ اب يلاع شزومآ ماظن زا ي تايح ناسنا اه مهم فياظو زا يكي و دراد راك ورس هاگشناد اه ي تسا هعماج زاين دروم يناسنا يورين تيبرت روشك يكشزپ مولع تيفيك اب ار هعماج ينامرد و يتشادهب ياهزاين دنشاب رداق هك دنزاس عفترم... more
شزپ شزومآ ـ شخب ناونع هب يك ـ اب يلاع شزومآ ماظن زا ي تايح ناسنا اه مهم فياظو زا يكي و دراد راك ورس هاگشناد اه ي تسا هعماج زاين دروم يناسنا يورين تيبرت روشك يكشزپ مولع تيفيك اب ار هعماج ينامرد و يتشادهب ياهزاين دنشاب رداق هك دنزاس عفترم لااب ، شزومآ تيمك و تيفيك هب هجوت نياربانب مدخ تيفيك حطس ءاقترا هب رجنم نآ دوبهب و يكشزپ رد تا دش دهاوخ روشك نامرد و تشادهب شخب ) 1 .( رد تيفيك يسررب رد شزومآ دادنورد تيفيك دياب يكشزپ ) د يملع تئيه ءاضعا و نايوجشنا ( شزومآ دنيارف ، ) همانرب اه ي و تاناكما ،يشزومآ شور اه يبايشزرا ي ( دادنورب و ) غراف صحتلا ي نلا ( دريگ رارق هجوت دروم . يارب تسد ي با هب ي تيفيك ادتبا يكشزپ شزومآ رد بسانم م ي اب ي تس تيفيك تيعضو رمتسم يسررب اب سپس و هدومن يبايزرا ار شزومآ تهج رد فعض طاقن حلاصا و توق طاقن تخانش ،دوجوم دومن مادقا نآ ءاقترا ) 2 .( هبنج زادياب هك تسا يدعب دنچ يدنيارف شزومآ تيفيك هب تسياب يم روظنم نيدب دوش يسررب يددعتم ياه مامت هجوت ريگارف و سردم هلمج زا دنيارف نيا رد ريگ رد لماوع ددرگ ) 3 ( رد روشك لخادرد هدش ماجنا تاعلاطم رثكا يلو ،نآ ءاقترا ياهراكهار و يك...
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Research Interests: Occupational Medicine, Medicine, Automobiles, Heavy metals, Humans, and 12 moreSmoking, Male, Welding, Occupational, Spirometry, Public health systems and services research, Pulmonary Function, Occupational Diseases, Cross Sectional Studies, Logistic Models, Spot Welding, and Respiratory function tests
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Background: Studies have shown that dermal exposure to polycyclic aromatic compounds can lead to systemic health effects if the substance is absorbed by the skin. Epidemiologic reports of PAH-exposed workers have noted increased... more
Background: Studies have shown that dermal exposure to polycyclic aromatic compounds can lead to systemic health effects if the substance is absorbed by the skin. Epidemiologic reports of PAH-exposed workers have noted increased incidences cancer. Methods: According to the low vapor pressure this material, the major route of occupational exposure in some jobs is through dermal exposure. The more common methods of assessing dermal exposure to these compounds have been investigated. Results: There are Different results regarding the effectiveness of various methods of assessing skin exposure to this class of compounds. However, tend to use quantitative methods and semi quantitative reverse rising in this field. Discussion: Assessment methods have advantages and disadvantage that researcher can be used one or more of the methods according to facilities. However, more research is needed in this field
Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by... more
Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by industrial equipments, we assessed the effects of noise on hearing of tile industry workers. Methods: This cross-sectional study was done on 372 workers exposed to noise level of ≥85 dB in a tile factory in Yazd. After clinical examination and completing the questionnaire, audiometry was done by an audiologist for all. Data was then analyzed using SPSS software. Results: Our data showed mean age and work duration was 32.2 ± 6.9 and 9.5 ± 6.4 years respectively. Mean hearing thresholds for both ears were higher in 4000 and then 8000 Hz, as well as in higher frequencies rather than lower ones. Also, left ear showed more sensitivity than right ear. There was a significant relationship between hearing threshold and age and work duration (p<0.001). Conclusion: Our findings showed that exposure to noise in tile industry increases mean hearing thresholds in higher frequencies especially for 4000 Hz, while age and work duration are important factors.
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Introduction: Given the importance of spirituality and health as well as activities done by hospital personnel, the aim of present study is to evaluate the relationship between spirituality and general health and to assess some possible... more
Introduction: Given the importance of spirituality and health as well as activities done by hospital personnel, the aim of present study is to evaluate the relationship between spirituality and general health and to assess some possible affecting factors such as demographic and work factors on these variables in hospital staff. Materials and Methods: This cross-sectional study was done on hospital employees of Yazd Shahid Sadoughi University of Medical Sciences. First, 101 hospital staff were selected randomly by using multistage sampling. General Health, spiritual experience and demographic questionnaires as reported by the subjects themselves, were completed. Cut-off point of 23 was considered for general health, So that those, whose score were 23 or less, were considered as healthy individuals. Collected data were entered software SPSS (Ver.19) and then analyzed using Pearson correlation, t-test and ANOVA tests. Results: Mean and standard deviation of spirituality was 251.50 and ...
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Nursing jobs are among the occupations experiencing high levels of stress. Level of psychological well-being and coping style with stressful situations among nurses has large impact on their job performance. Limited information exists... more
Nursing jobs are among the occupations experiencing high levels of stress. Level of psychological well-being and coping style with stressful situations among nurses has large impact on their job performance. Limited information exists about the relationship between coping styles and psychological well-being among nurses, so the present study examined the way of coping and the level of psychological well-being as well as their relationships among nurses. In this correlational study, 100 nurses from Shahid Sadoughi University of Medical Sciences were selected by multi-stage random sampling in 2012. Lazarus and Folkman's coping styles and Ryff's psychological well-being Questionnaires were completed by self-report method. Collected data were entered software SPSS ver. 13 and then analyzed using Pearson correlation test. The results showed EFCSwere more used but PFCSstyle was less used with a little difference by mean (SD) of 87.91 (10.76) vs. 73.12 (12.15). Between EFCSand so...
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Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the... more
Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the effects of welding fumes on lung function and respiratory symptoms among welders of an automobile manufacturing plant in Iran. This historical cohort study assesses 43 male welders and 129 office workers by a questionnaire to record demographic data, smoking habits, work history and respiratory symptoms as well as lung function status by spirometry. The average pulmonary function values of welders were lower relative to controls with dose-effect relationship between work duration and pulmonary function impairment. The prevalence of chronic bronchitis was higher in welders than controls. Our findings suggest that welders are at risk for pulmonary disease.
Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In this study we... more
Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In this study we aimed to assess the effect of exposure to
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Introduction: Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In... more
Introduction: Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In this study we aimed to assess the effect of exposure to mixed aromatic solvents on hearing in the absence of exposure to hazardous noise. Materials and Methods: In a cross-sectional study, 99 workers from the petrochemical industry with exposure to a mixture of organic solvents whose noise exposure was lower than 85 dBA were compared with 100 un-exposed controls. After measuring sound pressure level and mean concentration of each solvent in the workplace, pure-tone-audiometry was performed and the two groups were compared in terms of high-frequency and low-frequency hearing loss. T-tests and Chi-square tests were used to compare the two groups. Results: The mean hearing threshold at all frequencies among petrochemical workers was normal (below 25 d...
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Aim: This study was conducted to examine the effect(s) of combined exposure to whole-body vibration (WBV) and noise in railway workers. Methods: In this historical cohort study, train drivers with combined exposure to WBV and... more
Aim: This study was conducted to examine the effect(s) of combined exposure to whole-body vibration (WBV) and noise in railway workers. Methods: In this historical cohort study, train drivers with combined exposure to WBV and impermissible noise as the case group (n = 85) and shunters with just exposure to impermissible noise as the control group (n = 30) were recruited. The hearing threshold at the conventional audiometric frequencies was measured in both the groups, and the standard threshold shift (STS) and hearing threshold shift at higher frequencies were calculated. Data were analyzed by SPSS version 20 using t-test, Chi-square, and paired t-test. Results: There was no significant difference between the groups for age of participants as well as work duration and body mass index. Increased hearing threshold was most frequently observed at 3000, 4000, and 6000 Hz. STS and hearing threshold shift at high frequencies were observed at 6.0% and 3.3%, and 8.2% and 26.7% in train drivers and shunters in the left ear, respectively, but these were not statistically significant. Conclusion: Despite the unauthorized exposure to noise and WBV of train drivers, the STS and hearing threshold shift at higher frequencies were not more prevalent compared with the shunters who were exposed only to impermissible noise levels; hence, no association was found between noise and vibration in this study.
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Poor quality of sleep is a distressing and worrying condition that can disturb academic performance of medical students. Sleep hygiene practices are one of the important variables that affect sleep quality. The objective of this study was... more
Poor quality of sleep is a distressing and worrying condition that can disturb academic performance of medical students. Sleep hygiene practices are one of the important variables that affect sleep quality. The objective of this study was to assess association between sleep hygiene practices and sleep quality of medical students in Qazvin University of Medical Sciences. In this descriptive-correlational study, a total of 285 medical students completed a self-administered questionnaire. Demographic data, sleep-wake schedule in weekday and weekend, and sleep duration were collected. Students' sleep quality was assessed by Pittsburg Sleep Quality Index (PSQI). Data were analyzed by SPSS Ver 13. Overall, 164 (57.5) of students had poor sleep quality. Mean global PSQI score and average score of four subscales were significantly higher in male than female. Regression analysis showed that male students (β=-0.85, P<0.05), students at senior level (β=-0.81, P<0.05), married student...
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Despite the presence of many textile and dyeing plants in Iran, we couldn't find similar studies in this country. Forthermore, considering progress in the dyeing process and engineering controls, assessment of respiratory system is... more
Despite the presence of many textile and dyeing plants in Iran, we couldn't find similar studies in this country. Forthermore, considering progress in the dyeing process and engineering controls, assessment of respiratory system is important for these workers. The present study was performed to evaluate the respiratory system in dyeing workers. In a cross-sectional study, 101 dyeing workers (all dyeing workers in yazd) and 90 workers without respiratory exposures (control group), were evaluated. A questionnaire was filled for each participant included Venables questionnaire and some other questions about age, work experience, personal or familial history of asthma or atopy, acute and chronic respiratory symptoms; Then spirometry was performed before and after the shift work Results: The frequency of acute and chronic respiratory symptoms was significantly higher among dyeing workers than controls. According to the Venables questionnaire, 11.9% of the dyeing workers suffered from...
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National Transport Commission (NTC) classifies train driving as a high-level safety critical job. To assess fitness-for-work among train drivers in Yazd, central Iran. We evaluated 152 train drivers for their fitness for duty. The results... more
National Transport Commission (NTC) classifies train driving as a high-level safety critical job. To assess fitness-for-work among train drivers in Yazd, central Iran. We evaluated 152 train drivers for their fitness for duty. The results were then compared with NTC guidelines. 63.8% of subjects were fit for duty, 34.2% fit subject to review, and 2.0% were temporarily unfit. The most common reason for fit subject to review was a Kessler score >19. The prevalence of overweight and obesity was 48.0% and 15.0%, respectively. The prevalence of dyslipidemia was 69.7%, diabetes 10.0%, impaired fasting glucose 36.0%, and hypertension was 19.0%, respectively. Most studied train drivers can continue their work safely. The prevalence of some risk factors such as overweight and dyslipidemia were high among train drivers. This warrants further evaluation and establishment of control programs.
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Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the... more
Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the effects of welding fumes on lung function and respiratory symptoms among welders of an automobile manufacturing plant in Iran. This historical cohort study assesses 43 male welders and 129 office workers by a questionnaire to record demographic data, smoking habits, work history and respiratory symptoms as well as lung function status by spirometry. The average pulmonary function values of welders were lower relative to controls with dose-effect relationship between work duration and pulmonary function impairment. The prevalence of chronic bronchitis was higher in welders than controls. Our findings suggest that welders are at risk for pulmonary disease.
Research Interests: Medicine, Linear models, Iran, Automobiles, Humans, and 15 moreMale, Lung Diseases, Lung, Prevalence, Questionnaires, Adult, Occupational Exposure, Respiratory, Odds ratio, Retrospective Studies, Risk Assessment, Pulmonary function test, Occupational Diseases, Logistic Models, and Case Control Studies
The consequences of sleep deprivation and sleepiness have been noted as the most important health problem in our modern society among shift workers. The objective of this study was to investigate the prevalence of sleep disorders and... more
The consequences of sleep deprivation and sleepiness have been noted as the most important health problem in our modern society among shift workers. The objective of this study was to investigate the prevalence of sleep disorders and their possible effects on work performance in two groups of Iranian shift workers and nonshift workers. This study was designed as a cross-sectional study. The data were collected by PSQI, Berlin questionnaire, Epworth Sleepiness Scale, Insomnia Severity Index, and RLS Questionnaire. Occupational impact of different sleep disorders was detected by Occupational Impact of Sleep Disorder questionnaire. These questionnaires were filled in by 210 shift workers and 204 nonshift workers. There was no significant difference in the age, BMI, marital status, and years of employment in the two groups. Shift workers scored significantly higher in the OISD. The prevalence of insomnia, poor sleep quality, and daytime sleepiness was significantly higher in shift worke...
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The purpose of this cross-sectional study was to examine the association between the metabolic syndrome (MetS) and physical activity energy expenditure (PAEE) in overweight and obese sedentary postmenopausal women. The study population... more
The purpose of this cross-sectional study was to examine the association between the metabolic syndrome (MetS) and physical activity energy expenditure (PAEE) in overweight and obese sedentary postmenopausal women. The study population consisted of 137 overweight and obese sedentary postmenopausal women (age, 57.7 ± 4.8 years; BMI, 32.4 ± 4.6 kg·m–2). Subjects had the MetS if 3 out of the following 5 criteria were met: visceral fat > 130 cm2, high-density lipoprotein (HDL) cholesterol < 1.29 mmol·L–1, fasting triglycerides ≥ 1.7 mmol·L–1, blood pressure ≥ 130/85 mmHg, and fasting glucose ≥5.6 mmol·L–1. We measured (i) body composition (by dual-energy X-ray absorptiometry); (ii) visceral fat (by computed tomography); (iii) insulin sensitivity (using the hyperinsulinemic-euglycemic clamp); (iv) plasma lipids, fasting glucose, and insulin, as well as 2 h glucose during an oral glucose tolerance test; (v) resting blood pressure; (vi) peak oxygen consumption (VO2 peak); (vii) PAEE ...
Research Interests: Obesity, Medicine, Energy Metabolism, Metabolic syndrome, Muscle strength, and 15 moreBiological Sciences, Overweight, Humans, Blood Pressure, Female, Body Composition, Applied Physiology, Energy Expenditure, Body Mass Index, Aged, Middle Aged, Oxygen Consumption, Motor activity, Metabolic Syndrome X, and Medical and Health Sciences
After presbycusis, noise-induced hearing loss is the second most common cause of acquired hearing loss. Numerous studies have shown that high-intensity noise exposure increases free radical species; therefore, use of antioxidants to... more
After presbycusis, noise-induced hearing loss is the second most common cause of acquired hearing loss. Numerous studies have shown that high-intensity noise exposure increases free radical species; therefore, use of antioxidants to detoxify the free radicals can prevent cellular damage in the cochlea. We studied the potential hearing protective effect of different doses of ascorbic acid administered prior to noise exposure in rats. Twenty-four male albino Wistar rats were randomly allocated into four groups: groups A, B, and C received 1250, 250, and 50 mg/kg/day of ascorbic acid, respectively, and group D acted as the control group. After 14 days of ascorbic acid administration, the rats were exposed to noise (105 dB sound pressure level for 2 h). Distortion product otoacoustic emissions (DPOAE) were recorded prior to starting the ascorbic acid as baseline and 1 h after the noise exposure. The amplitude decrease was 14.99 dB for group A, 16.11 dB for group B, 28.82 dB for group C,...