Norwegian Institute of Public Health, Division of Environmental Medicine, Department of Air Pollution and Noise, Box 4404 Nydalen, N-0403 Oslo, Norway.
J Acoust Soc Am. 2011 Jun;129(6):3716-26. doi: 10.1121/1.3583547.
The aim of this study was to explore and compare the effect of noise from railway and road traffic on sleep in subjects habitually exposed to nocturnal noise. Forty young and middle aged healthy subjects were studied with polysomnography (PSG) during two consecutive nights in their own bedroom. Noise measurements and recordings were conducted concurrently outside of the bedroom façade as well as inside the bedroom of each participant. Different noise exposure parameters were calculated (L(p,A,eq,night), L(p,A,Fmax,night), and L(AF5,night)) and analyzed in relation to whole-night sleep parameters. The group exposed to railway noise had significantly less Rapid eye movement, (REM) sleep than the group exposed to road traffic noise. A significant association was found between the maximum level (L(p,A,Fmax,night)) of railway noise and time spent in REM sleep. REM sleep was significantly shorter in the group exposed to at least a single railway noise event above 50 dB inside the bedroom. These results, obtained in an ecological valid setting, support previous laboratory findings that railway noise has a stronger impact than road traffic noise on physiological parameters during sleep, and that the maximum noise level is an important predictor of noise effects on sleep assessed by PSG, at least for railway noise.
本研究旨在探讨和比较铁路和道路交通噪声对习惯性夜间暴露于噪声环境中的受试者睡眠的影响。40 名年轻和中年健康受试者在自己的卧室中连续两晚进行多导睡眠图（PSG）研究。在每个参与者的卧室外部和内部同时进行噪声测量和记录。计算并分析了不同的噪声暴露参数（L(p,A,eq,night)、L(p,A,Fmax,night)和 L(AF5,night))与整夜睡眠参数的关系。与暴露于道路交通噪声的组相比，暴露于铁路噪声的组的快速眼动（REM）睡眠时间明显减少。发现铁路噪声的最大水平（L(p,A,Fmax,night)）与 REM 睡眠时间之间存在显著相关性。在卧室内部至少有一次铁路噪声事件超过 50dB 的情况下，REM 睡眠时间明显缩短。这些在生态有效环境中获得的结果支持了先前的实验室发现，即铁路噪声对睡眠期间生理参数的影响比道路交通噪声更强，并且最大噪声水平是 PSG 评估噪声对睡眠影响的重要预测指标，至少对于铁路噪声而言是如此。
