Vol 8: Special Issue in National Hypertension Treatment 2012:S183-S186

Effects of occupational noise exposure on changes in blood pressure of workers

Hossein Ali Yousefi Rizi, Habibolah Dehghan


   BACKGROUND: In most industries, workers are exposed to loud noise. Noise is considered as a nonspecific biological stressor that have adverse effects on human physiology. It is associated with hypertension which is in turn one of the most important preventable risk factors of cardiovascular disorders. This study aimed to evaluate the effects of noise on changes of workers' blood pressure.

   METHODS: This cross-sectional study was performed on 90 individuals who were exposed to noise at one of the industries in Isfahan, Iran. Noise levels (in dBA) were measured by means of a sound level meter. Data was collected using a demographic questionnaire and physical examination. Blood pressure was measured by a sphygmomanometer at workplace. The collected data was analyzed by t-tests.

   RESULTS: The workers aged 31.5 ± 5.2 years and were exposed to mean noise level of
97.5 ± 10.1 dBA which was significantly above the standard level (85 dBA).The relationships between blood pressure, heart rate, and noise level were not significant. However, Pearson’s correlation indicated systolic blood pressure to have significant correlations with age (correlation coefficient = 0.302) and work experience (correlation coefficient = 0.299).

   CONCLUSION: Workers exposed to noise levels above the standard, especially in the metal industry but their blood pressures haven’t any associated with noise. it mention that any changes in blood pressure resulting from occupational noise are likely to be small, careful controls, large sample sizes, and long time exposure to noise would be take to identify significant effects.



Keywords: Noise Exposure, Blood Pressure, Young Workers, Cardiovascular Disease, Metal Industries

Full Text:



  • There are currently no refbacks.

Creative Commons Attribution-NonCommercial 4.0

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.