Evidence for a dose-response relationship between occupational noise and blood pressure.
In this study, we investigated the role of occupational noise exposure and blood pressure among workers at 2 plants.
A noise-exposed plant (plant 1, >= 89 dBA) and a less-noise-exposed plant (plant 2, <= 83 dBA) were chosen.
Exposure was based on department-wide average noise measures ; on the basis of job location and adjusting for layoffs during their employment at the plant, a cumulative time-weighted average noise level was calculated for each worker.
The study population comprised 329 males in plant 1 and 314 males in plant 2. Their ages ranged from 40 to 63 y (mean ages=49.6 and 48.7, respectively), and they had worked at least 15 y at the plant.
The clinical examination was administered prior to the workday and measured height, weight, pulse, and blood pressure.
In addition, we noted medical and personal-habits histories, including alcohol intake and cigarette smoking patterns.
We used a questionnaire to determine in-depth occupation, military history, noisy hobbies, and family history of hypertension.
When individuals who took blood-pressure medication were removed from the analysis, t tests for differences in average blood pressure between plants showed a mean systolic blood pressure of 123.3 mm Hg in plant 1 versus 120.8 mm Hg in plant 2 (p=06) and a mean diastolic blood pressure of 80.3 mm Hg versus 77.8 mm Hg in Plant 1 and 2, respectively (p=014). (...)
Mots-clés Pascal : Bruit industriel, Exposition professionnelle, Travailleur, Appareil circulatoire pathologie, Pression sanguine, Epidémiologie, Homme, Niveau bruit, Relation dose réponse, Effet biologique, Toxicité
Mots-clés Pascal anglais : Industrial noise, Occupational exposure, Worker, Cardiovascular disease, Blood pressure, Epidemiology, Human, Noise level, Dose activity relation, Biological effect, Toxicity
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0213527
Code Inist : 002A08E. Création : 16/11/1999.