Research Article

Investigation of the Effect of Occupational Noise Exposure on Blood Pressure and Heart Rate of Steel Industry Workers

Table 2

Systolic and diastolic blood pressure and heart rate before and after the exposure to different noise levels.

Noise levelVariableMean (SD) before exposureMean (SD) after exposure -value*

85 dBSystolic blood pressure (mmHg)117.38 (12.32)115.75 (11.09)0.564
Diastolic blood pressure (mmHg)73.87 (10.78)74.12 (8.69)0.925
Heart rate (bpm)74.5 (8.33)71.5 (13.06)0.200

95 dBSystolic blood pressure (mmHg)111.88 (7.52)112.12 (5.81)0.889
Diastolic blood pressure (mmHg)69.37 (4.68)69.75 (4.97)0.623
Heart rate (bpm)74.5 (9.85)71.75 (9.43)0.147

105 dBSystolic blood pressure (mmHg)109.37 (12.51)111.87 (9.81)0.445
Diastolic blood pressure (mmHg)69 (6.5)71.5 (6.54)0.308
Heart rate (bpm)71.12 (9.26)70.87 (11.03)0.895

*Paired t-test.