Fietze Ingo, Barthe Charlotte, Hölzl Matthias, Glos Martin, Zimmermann Sandra, Bauer-Diefenbach Ralf, Penzel Thomas
Charité - Universitätsmedizin Berlin, CCM-CC11, Centre for Sleep Medicine, Berlin, Germany.
Department of Otorhinolaryngology, Universitätsklinik Magdeburg, Magdeburg; ENT-Center Traunstein, Traunstein, Germany.
Noise Health. 2016 Sep-Oct;18(84):240-246. doi: 10.4103/1463-1741.192480.
Noise is one of the factors that can seriously disturb sleep, and sound volume is an important factor in this context. One strategy involves avoiding exposure to sounds in the night, while entail the minimization of background noise in a bedroom. The goal of this study was to investigate the effect of systematic sound attenuation on nocturnal sleep by influencing sound volume and reverberation within the context of room acoustics.
On this basis, we designed a randomized, controlled crossover trial investigating 24 healthy sleepers (15 men and 9 women, aged 24.9 ± 4.1 years) with a body mass index (BMI) of 21.9 ± 1.6 kg/m2. Each participant slept for three consecutive nights at three different locations: (a) at our sleep lab, (b) at the participant's home, and (c) at an acoustically isolated room. In addition to conduct of polysomnography (PSG), subjective sleep quality and nocturnal noise level were measured at each location. We likewise measured room temperature and relative humidity.
Under conditions of equal sleep efficiency, a significant increase in deep sleep, by 16-34 min, was determined in an acoustically isolated room in comparison to the two other sleep locations. Fewer arousal events and an increase in rapid eye movement (REM) latency became evident in an acoustically isolated environment. Sleep in a domestic environment was subjectively better than sleep under the two test conditions.
For healthy sleepers, room acoustics influence the microstructure of sleep, without subjective morning benefit. Reduction of noise level and of reverberation leads to an increase in the amount of deep sleep and to reduction of nocturnal arousal events, which is especially important for poor sleepers.
噪音是严重干扰睡眠的因素之一，在此背景下音量是一个重要因素。一种策略是避免夜间接触声音，同时尽量减少卧室中的背景噪音。本研究的目的是通过在房间声学环境中影响音量和混响来研究系统声音衰减对夜间睡眠的影响。
在此基础上，我们设计了一项随机对照交叉试验，研究24名健康睡眠者（15名男性和9名女性，年龄24.9±4.1岁），体重指数（BMI）为21.9±1.6kg/m²。每位参与者在三个不同地点连续睡三晚：（a）在我们的睡眠实验室，（b）在参与者家中，（c）在隔音房间。除了进行多导睡眠图（PSG）检查外，还在每个地点测量主观睡眠质量和夜间噪音水平。我们同样测量了室温及相对湿度。
在睡眠效率相同的条件下，与其他两个睡眠地点相比，隔音房间的深度睡眠时间显著增加，增加了16 - 34分钟。在隔音环境中，觉醒事件减少，快速眼动（REM）潜伏期延长。在家居环境中的睡眠主观上比在两种测试条件下的睡眠更好。
对于健康睡眠者，房间声学影响睡眠微观结构，但对早晨主观状态无益处。降低噪音水平和混响会导致深度睡眠时间增加，夜间觉醒事件减少，这对睡眠质量差的人尤为重要。
