Nocturnal road traffic noise and sleep: Day-by-day variability assessed by actigraphy ans sleep logs during a one week sampling: preliminary findings.

Sandra Pirrera, Raymond Cluydts, Elke De Valck

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Sleep disturbances are regarded as one of the most deleterious effects of nocturnal noise exposure. But noise exposure not only affects the sleep period itself, it also compromizes daytime functioning, causing impairments in mood, performance and general well-being. In this field study, we assessed the objective and subjective sleep quality of people living in areas with a high density of road traffic noise in the Brussels area. 20 volunteers completed a 7-day sleep log and were asked to wear an actigraph during the night. Sleep variables (Time in Bed (TIB), Total Sleep Time (TST), Sleep Latency (SL), Wake after sleep onset (WASO) and Sleep Quality (SQ) were assessed from both instruments and compared. Road traffic noise [LAeq (22h-08h)] was measured inside and outside the bedroom during 7 nights using Integrator Class 1 & 2 Sound Level Meter (Metravib). Significant day-by-day variability was found only for noise measurements outside the bedroom. Pearson correlational analysis shows a significant positive correlation between actigraphy and sleep logs for TST (r = .64) and SL (r = .52). TST as measured with the actigraphy was also negatively associated with the noise levels inside the bedroom.
This analysis only partially confirm our hypotheses and the next step in our study, a test-retest situation in areas with high density of road traffic noise in the Brussels Capital, should provide a more elaborated view of the effects of road traffic noise on sleep.
Original languageEnglish
Title of host publicationProceedings of the 9th Congress of the International Commission on the Biological Effects of Noise
Pages550-555
Number of pages6
Publication statusPublished - 25 Jul 2008
EventFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden
Duration: 21 Sep 200925 Sep 2009

Conference

ConferenceFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet
CountrySweden
CityStockholm
Period21/09/0925/09/09

Keywords

  • sleep
  • road traffic noise

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