title: Investigation of the effect of occupational noise exposure on blood pressure and heart rate of steel industry workers.
abstract: OBJECTIVE
  This study aimed to investigate the effect of noise exposure on blood pressure and heart rate of steel industry workers.
  
  
  METHODS
  In the present cross-sectional study, 50 workers were selected from a steel company in Fars province, Iran, and exposed to 85, 95, and 105 dB noise levels for 5 minutes. The participants' blood pressure and heart rate were measured using Beurer BC16 pulse meter both before and after the exposure.
  
  
  RESULTS
  The study results showed no significant difference in blood pressure and heart rate before and after the exposure. However, the workers' systolic blood pressure had increased compared to before the exposure; of course, the difference was not statistically significant (P > 0.05). Besides, although the subjects' heart rate had reduced in comparison to before the exposure, the difference was not statistically significant (P > 0.05).
  
  
  CONCLUSIONS
  No significant change was observed in blood pressure and heart rate after acute exposure to 85, 95, and 105 dB noise levels.
authors.affiliation: Occupational Health Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz 7153675541, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Zamanian
authors.forename: Reza
authors.initials: R
authors.lastname: Rostami
authors.forename: Jafar
authors.initials: J
authors.lastname: Hasanzadeh
authors.forename: Hassan
authors.initials: H
authors.lastname: Hashemi
mesh_terms: D000328:Adult; D001794:Blood Pressure; D003430:Cross-Sectional Studies; D006339:Heart Rate; D006801:Humans; D007492:Iran; D008669:Metallurgy; D009623:Noise, Occupational; D016273:Occupational Exposure; D013232:Steel; D055815:Young Adult
chemical_list: D013232:Steel