title: Effects of occupational noise exposure on blood pressure.
abstract: We measured 24-hour ambulatory blood pressure and 16-hour noise exposure continuously for 20 automobile workers, and used linear mixed-effects regression models to estimate transient and sustained effects of noise exposure on blood pressure. The occupational noise levels of the high-exposure workers with 85 +/- 8 dBA were significantly higher than those of the low-exposure workers with 59 +/- 4 dBA (P < 0.05). We found a significant difference of 16 +/- 6 mm Hg in sleep-time systolic blood pressure (SBP) existed between 2 exposure groups, and a marginal increase of 1 mm Hg SBP per 1-dBA increase in occupational noise exposure at a 60-minute lag time during work (P = 0.07). Occupational noise exposure had both transient and sustained effects on workers' SBP.
authors.affiliation: Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei.
authors.forename: Ta-Yuan
authors.initials: TY
authors.lastname: Chang
authors.forename: Ruei-Man
authors.initials: RM
authors.lastname: Jain
authors.forename: Chiu-Sen
authors.initials: CS
authors.lastname: Wang
authors.forename: Chang-Chuan
authors.initials: CC
authors.lastname: Chan
mesh_terms: D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000209:etiology* / Q000503:physiopathology; D007221:Industry; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009623:Noise, Occupational / Q000009:adverse effects*; D009784:Occupational Diseases / Q000453:epidemiology / Q000209:etiology* / Q000503:physiopathology; D016273:Occupational Exposure / Q000009:adverse effects; D013624:Taiwan / Q000453:epidemiology