title: Effects of environmental noise exposure on 24-h ambulatory vascular properties in adults.
abstract: Exposure to environmental noise has been associated with hypertension, but the related mechanism of vascular structural changes is unclear. This repeated-measure study investigated the effects of noise exposure on the 24-h ambulatory vascular structural properties in 66 adults aged 18-32 years. Individual noise exposure and personal vascular parameters were measured simultaneously in all subjects. Linear mixed-effects regressions were used to estimate the effects. A 1-A-weighted decibel (dBA) increase was significantly associated with the transient effects of 1.39 (95% confidence interval: 1.07, 1.79) %mL/mmHg in arterial compliance at nighttime but -1.70 (-2.05, -1.10) kdynes·s/cm(5) in arterial resistance during the daytime and -2.38 (-3.44, -1.64) kdynes·s/cm(5) in arterial resistance at nighttime among all subjects. Such effects were observed in arterial distensibility only during the daytime after the 30-min (-1.84 [-2.61, -1.29] %/mmHg) and 60-min (-2.06 [-2.95, -1.44] %/mmHg) time-lagged noise exposures. For 24-h environmental noise, a 1-dBA increment was significantly associated with a sustained increase of 1.25 (1.10, 1.42) %mL/mmHg in arterial compliance but a decrease of 2.12 (-2.51, -1.80) kdynes·s/cm(5) in arterial resistance. Environmental noise exposure may have transient and sustained effects on adult vascular properties.
authors: Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan, ROC. tychang@mail.cmu.edu.tw
authors: Ta-Yuan
authors: TY
authors: Chang
authors: Chiu-Shong
authors: CS
authors: Liu
authors: Hsiu-Hui
authors: HH
authors: Hsieh
authors: Bo-Ying
authors: BY
authors: Bao
authors: Jim-Shoung
authors: JS
authors: Lai
mesh_terms: D000293:Adolescent; D000328:Adult; D001808:Blood Vessels / Q000502:physiology*; D006801:Humans; D008991:Monitoring, Physiologic; D009622:Noise / Q000009:adverse effects*; D055815:Young Adult