Zusammenfassung
The aim of study reported here was to elucidate the importance of
number of noise events with a high maximum noise level for sleep
disturbance effects in terms of body movements, subjective sleep
quality and performance. The noise exposure consisted of 4, 8, 16
and 64 passages from heavy vehicles. Twenty-eight subjects between
20 and 29 years of age were exposed to either 50 or 60 dB(A) maximum
noise levels. The result showed that sleep quality decreased with
increased number of noise events at 60 dB(A) maximum noise level.
At 16 noise events/night the decrease in sleep quality was significant
(−29%). At 50 dB(A) there was no relation between the number of noise
events and sleep quality. The sleep quality was effected at 64 noise
events, primarily by a prolonged time to fall asleep. Performance
on a three-choice reaction time test (FV) was decreased after 60
dB(A) as compared to 50 dB(A). It is suggested that to protect people
from sleep disturbance effects from road traffic noise, it is necessary
to consider the number of vehicles of a certain maximum noise level.
Nutzer