THE STUDY OF NOISE AND VIBRATION EFFECTS ON WORKERS IN KERMAN MOTOR FACTORY

Abstract

Introduction: Sleep restores the human’s body. Some factors such as stress, noise and vibration can lead to sleep disorder and hormone imbalance. The purpose of this paper is to study the effect of exposure simultaneously to noise and vibration on sleep disorders of workers in Kerman Motor manufacturing industry. Materials and methods: Analytical descriptive research was done on 200 workers by simple random sampling. The control group has been demographically matched up with the sample group. The standards for samples of this research were workers who are nonsmokers; nonusers of caffeine, soporific or tranquilizer; and do not have special diseases. Sampling was done by sound level meter, oscillator, demographical and sleep disorder information questionnaire. Results: The exposure to noise and vibration is more than permitted amount. The control group and sample group, are all healthy people with no records of disease or tranquilizer medicine consumption. Conclusions: The results have shown that the exposure to noise and vibration, affects the quality of workers’ sleep. Therefore, solutions to decrease noise and vibration in factory should be considered.

Keywords

• Noise
• vibration
• sleep disorder