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Respiratory Morbidity Induced by Occupational Inhalation Exposure to High Concentrations of Wheat Flour Dust

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Neghab M. , Soltanzadeh A. , Alipour A. , Hasanzadeh J. , Alipour H.

International Journal of Occupational Safety and Ergonomics

2012

tom Vol. 18, No. 4

563--569

Introduction. The main purpose of this study was to investigate the respiratory effects of exposure to high airborne concentrations of wheat flour dust. Methods. This cross-sectional study was carried out at a local wheat flour mill in Shiraz, southern Iran. Thirty-five male workers exposed to flour dust and 32 healthy male nonexposed employees were investigated. The prevalence of respiratory symptoms among them was evaluated and parameters of their pulmonary function were measured. Moreover, to assess the extent to which subjects were exposed to flour dust, airborne concentrations of its inhalable and respirable fractions were measured.Results. Airborne concentrations of dust exceeded current permissible level. The prevalence of regular cough, productive cough, wheezing, phlegm and dyspnea was significantly higher in exposed subjects than in nonexposed employees. Similarly, both acute and chronic significant (p < .05) decrements in most parameters of pulmonary function were noted. Conclusions. Our findings provide corroborative evidence to further support the notion that exposure to flour dust is associated with a significant increase in the prevalence of respiratory symptoms as well as ventilator disorders of the lungs.

Health Effects Associated With Shift Work in 12-Hour Shift Schedule Among Iranian Petrochemical Employees

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Choobineh A. , Soltanzadeh A. , Tabatabaee H. , Jahangiri M. , Khavaji S.

International Journal of Occupational Safety and Ergonomics

2012

tom Vol. 18, No. 3

419--427

Introduction. The main purposes of this study were to investigate shift-work-related health problems in 12-h shift schedule and to identify major factors associated with these problems. Materials and methods. This cross-sectional study was conducted at 8 petrochemical plants. The study population consisted of 1203 workers (549 shift and 654 day workers). Data on personal details, the shift schedule and adverse health outcomes were collected with a self-administered questionnaire. Results. The results showed that health problems in shift workers were more prevalent than in day workers; however, the differences were significant only in gastrointestinal and musculoskeletal disorders. Logistic regression analysis revealed that in addition to shift work, other variables such as extended work time, type of employment, second job and job unit were associated with health problems. Conclusions. Working shifts is one important variable influencing the health of petrochemical workers. To improve workers’ health, interventional program should focus on the shift schedule as well as other significant aspects of working conditions.

Association between psychosocial, organizational and personal factors and prevalence of musculoskeletal disorders in office workers

86%

Piranveyseh P. , Motamedzade M. , Osatuke K. , Mohammadfam I. , Moghimbeigi A. , Soltanzadeh A. , Mohammadi H.

International Journal of Occupational Safety and Ergonomics

2016

tom Vol. 22, No. 2

267--273

The purpose of this study was to investigate the relationship between organizational and personal (individual) factors with the prevalence of musculoskeletal disorders (MSDs) in office workers of the Iranian Gas Transmission Company. The participants rated two questionnaires – the standardized Nordic Musculoskeletal Questionnaire to measure the prevalence of MSDs, and the Veterans Healthcare Administration All Employee Survey questionnaire (2004 version) – to measure psychosocial, organizational and individual aspects of job satisfaction and workplace climate. The highest prevalence of MSDs was found in the lower back (49.7%) and neck (49.0%) regions. Results of the logistic regression models showed that some psychosocial and organizational factors and also some individual factors were associated with prevalence of MSDs (p < 0.05).These ﬁndings illustrate the need to consider all elements of the work system as a whole in future studies and in organizational planning.