Predictive power of incidents reporting rate and its dimensions by job stress among workers' Isfahan steel company

There is long-term interest in the effects of stress on health, due to the strain that it places on individuals which can lead to an increased risk of disease. The present study examined degree of perceived job stress related to incidents reporting rate and its dimensions among workers' Isfahan Steel Company. A self-administered anonymous was distributed to 189 workers. The survey included demographic factors, incidents reporting rate and its components [physical symptoms, psychological symptoms and accidents] and the job Stress Questionnaire. The data were analyzed by multivariate [MANOVA] and correlation techniques. 1] there was internal significant correlation between perceived job stress with incident reporting rate as well as with its two components namely physical symptoms and psychological symptoms; 2] there was not a significant relationship between perceived job stress and accident; 2] In multivariate analysis, perceived job stress respectively about 12%, 18% and 19% of the variance of variables of incidents reporting rate, physical and psychological symptoms significantly predicted [P<0.05]. Perceived job stress influences to physical and psychological symptoms. Therefore, decreasing job stress can be important to prevent the development of stress-related diseases and to promote workers health

effect of cushion of air on vibration transmitted to vehicle drivers based on standard

Whole Body Vibration [WBV] transmitted to drivers is one of the main reasons for several different symptoms such as musculoskeletal disorders. One of the recommendations to decrease the effects of whole body vibration is using a device that acts as an isolator. In this study, we used an air cushion as a device to decrease WBV. We measured whole body vibration transmitted to drivers before and after using this air cushion. This interventional study was performed with 95 bus drivers in Isfahan. Vibration parameters were measured in 3 axes and amount, of vibration were measured before and after using air cushion. Statistical analysis the data was carried out using the SPSS software, in which data were analyzed using the student's paired t test. Comparison of the vibration before and after using the air cushion showed a significant reduction in maximum pressure [Pmax] in X and Y axes [P < 0.05], a significant reduction in acceleration equivalent value [Aeq] in X and Y axes [P < 0.001]. Finally, Lmax was decreased in X axis. Our data showed that the buses which are being used in Isfahan vibrate more than the standard level. Although, using air cushion could significantly reduce vibration transmitted to bus drivers, but the vibration is still over than standard level