Associations of Various Nighttime Noise Exposure Indicators with Objective Sleep Efficiency and Self-Reported Sleep Quality: A Field Study

International Journal of Environmental Research and Public Health

Franziska Rudzik¹  Christian Cajochen¹  Jean-Marc Wunderli²  Reto Pieren²  Mark Brink³  Danielle Vienneau⁴  Martin Röösli⁴  MartinaS. Ragettli⁴  Benjamin Flückiger⁴ 

[1] Centre for Chronobiology, Psychiatric Hospital of the University of Basel, 4002 Basel, Switzerland;Empa, Laboratory for Acoustics/Noise Control, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland;Federal Office for the Environment, 3003 Bern, Switzerland;Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland;

关键词: sleep quality;    road traffic noise;    actimetry;    indoor noise;    noise measurements;    noise annoyance;    noise sensitivity;    time of day;   

DOI  :  10.3390/ijerph16203790

来源: DOAJ

【 摘 要 】

It is unclear which noise exposure time window and noise characteristics during nighttime are most detrimental for sleep quality in real-life settings. We conducted a field study with 105 volunteers wearing a wrist actimeter to record their sleep during seven days, together with concurrent outdoor noise measurements at their bedroom window. Actimetry-recorded sleep latency increased by 5.6 min (95% confidence interval (CI): 1.6 to 9.6 min) per 10 dB(A) increase in noise exposure during the first hour after bedtime. Actimetry-assessed sleep efficiency was significantly reduced by 2%−3% per 10 dB(A) increase in measured outdoor noise (L_{eq, 1h}) for the last three hours of sleep. For self-reported sleepiness, noise exposure during the last hour prior to wake-up was most crucial, with an increase in the sleepiness score of 0.31 units (95% CI: 0.08 to 0.54) per 10 dB(A) L_eq,1h. Associations for estimated indoor noise were not more pronounced than for outdoor noise. Taking noise events into consideration in addition to equivalent sound pressure levels (L_eq) only marginally improved the statistical models. Our study provides evidence that matching the nighttime noise exposure time window to the individual’s diurnal sleep−wake pattern results in a better estimate of detrimental nighttime noise effects on sleep. We found that noise exposure at the beginning and the end of the sleep is most crucial for sleep quality.

【 授权许可】

Unknown