A laboratory study on the effects of wind turbine noise on sleep: results of the polysomnographic WiTNES study

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Abstract

Study Objectives
Assess the physiologic and self-reported effects of wind turbine noise (WTN) on sleep.
Methods
Laboratory sleep study (n = 50 participants: n = 24 living close to wind turbines and n = 26 as a reference group) using polysomnography, electrocardiography, salivary cortisol, and questionnaire endpoints. Three consecutive nights (23:00–07:00): one habituation followed by a randomized quiet Control and an intervention night with synthesized 32 dB LAEq WTN. Noise in WTN nights simulated closed and ajar windows and low and high amplitude modulation depth.
Results
There was a longer rapid eye movement (REM) sleep latency (+16.8 min) and lower amount of REM sleep (−11.1 min, −2.2%) in WTN nights. Other measures of objective sleep did not differ significantly between nights, including key indicators of sleep disturbance (sleep efficiency: Control 86.6%, WTN 84.2%; wakefulness after sleep onset: Control 45.2 min, WTN 52.3 min; awakenings: Control n = 11.4, WTN n = 11.5) or the cortisol awakening response. Self-reported sleep was consistently rated as worse following WTN nights, and individuals living close to wind turbines had worse self-reported sleep in both the Control and WTN nights than the reference group.
Conclusions
Amplitude-modulated continuous WTN may impact on self-assessed and some aspects of physiologic sleep. Future studies are needed to generalize these findings outside of the laboratory and should include more exposure nights and further examine possible habituation or sensitization.

Detaljer

Författare
  • Michael G Smith
  • Mikael Ögren
  • Pontus Thorsson
  • Laith Hussain-Alkhateeb
  • Eja Pedersen
  • Jens Forssén
  • Julia Ageborg Morsing
  • Kerstin Persson Waye
Enheter & grupper
Externa organisationer
  • Göteborgs universitet
  • Chalmers Tekniska Högskola
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Miljömedicin och yrkesmedicin
Originalspråkengelska
TidskriftSleep
StatusPublished - 2020
PublikationskategoriForskning
Peer review utfördJa