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Journal ArticleDOI

Daytime noise and subsequent night sleep in man.

01 Jan 1984-European Journal of Applied Physiology (Eur J Appl Physiol Occup Physiol)-Vol. 53, Iss: 2, pp 159-163
TL;DR: The findings support the assumption that strong daytime noise may interfere with subsequent sleep processes and that the autonomic parameters were not clearly affected by the noise exposure.
Abstract: The effects of daytime noise on recovery processes during subsequent undisturbed night sleep were studied in six healthy men (21–27 years), exposed to 80 dB (A) pink noise 8 h per day for 2 days. Sleep EEG, ECG, and respiration were recorded in the laboratory for five consecutive nights: two baseline nights, two nights following noise stimulation, and again one baseline night. Additionally questionnaire data were collected, reflecting a subjective impairment of the recovery function of sleep after noise exposure. EEG sleep data of the first post-noise night showed an increase in slow wave sleep with a simultaneous decrease in stage 2 sleep. During the second post-noise night these changes were less prominent. Three subjects additionally showed an instability in the sleep course coinciding with elevated heart and respiration rates. However, altogether the autonomic parameters were not clearly affected by the noise exposure. The findings support the assumption that strong daytime noise may interfere with subsequent sleep processes.
Citations
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Journal ArticleDOI
TL;DR: In white-collar male daytime workers, psychological job stress factors such as interpersonal conflicts with fellow employees, job satisfaction, and social support were independently associated with a modestly increased risk of insomnia that included three different subtypes that were considered to be defining for the disorder.

201 citations

Journal ArticleDOI
TL;DR: Lavender serves as a mild sedative and has practical applications as a novel, nonphotic method for promoting deep sleep in young men and women and for producing gender‐dependent sleep effects.
Abstract: Aromatherapy is an anecdotal method for modifying sleep and mood. However, whether olfactory exposure to essential oils affects night‐time objective sleep remains untested. Previous studies also de...

122 citations


Cites background from "Daytime noise and subsequent night ..."

  • ...SWS increases following auditory (Cantero et al., 2002; Fruhstorfer et al., 1984, 1988) and visual stimulus exposure (Horne and Walmsley, 1976)....

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  • ...Indeed, all of the following stimuli also increase SWS: auditory cues (Cantero et al., 2002; Fruhstorfer et al., 1984, 1988); visual cues (Horne and Walmsley 1976); exercise (e.g., Bunnell et al., 1983; Horne and Moore, 1985; Horne and Staff, 1983; Youngstedt et al., 1997), and body warming…...

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Journal ArticleDOI
TL;DR: Overall, the results suggest that there are non-auditory health effects of noise, however, these require confirmation in prospective, longitudinal studies with interventions reducing noise levels.
Abstract: This paper reviews epidemiological studies, human experimental studies, and animal research on the non-auditory effects of noise on health. The following topics are covered: vegetative responses (e.g., blood pressure, digestion), biochemical effects, excretion of catecholamines, sleep, physical illness, subjective annoyance, and mental health. Combined effects of noise and other occupational health hazards on physiological functioning and health are also reviewed. Overall, the results suggest that there are non-auditory health effects. However, these require confirmation in prospective, longitudinal studies with interventions reducing noise levels.

90 citations

Journal ArticleDOI
TL;DR: It is suggested that healthy male white-collar workers' job stress disrupts nightly sleep, and also that their insufficient sleep at night causes daytime sympathetic predominance.
Abstract: To investigate the relationships among the amount of job stressors, self-reported sleep quality, and daytime autonomic activities, a questionnaire survey was conducted for 223 healthy male white-collar workers, and their short-term heart rate variability (HRV) was also examined. Half of the subjects complained of nightly poor sleep quality. Self-reported poor sleep quality was associated with a qualitative aspect of job stressors characterized by high amounts of “job difficulty”, less amounts of “achievement in job”, and less amounts of “support by colleagues”, and also with high amounts of personal distress and difficulty in changing their mood. Those who complained of poor sleep quality exhibited sympathetic predominance and reduced heartbeat intervals at standing rest, although job stressors was not correlated to HRV. These results suggest that their job stress disrupts nightly sleep, and also that their insufficient sleep at night causes daytime sympathetic predominance. However, the amount of job stressors was not directly associated with HRV. Further studies should focus on the relationships among chronic job stress, the satisfaction of sleep demands, and the daily and long-term variation in cardiac autonomic activities.

76 citations

Journal ArticleDOI
TL;DR: It is suggested that the deleterious effect of noise on sleep depended on the type of noise (getting-up time and spectral composition) and that SWS was the least disturbed sleep stage when compared with stage 2 and REM sleep.
Abstract: During sleep, in thermoneutral conditions, the noise of a passing vehicle induces a biphasic cardiac response, a transient peripheral vasoconstriction and sleep disturbances. The present study was performed to determine whether or not the physiological responses were modified in a hot environment or after daytime exposure to both heat and noise. Eight young men were exposed to a nocturnal thermoneutral (20 degrees C) or hot (35 degrees C) environment disturbed by traffic noise. During the night, the peak intensities were of 71 dB(A) for trucks, 67 dB(A) for motorbikes and 64 dB(A) for cars. The background noise level (pink noise) was set at 30 dB(A). The noises were randomly distributed at a rate of 9.h-1. Nights were equally preceded by daytime exposure to combined heat and noise or to no disturbance. During the day, the noises as well as the background noise levels were increased by 15 dB(A) and the rate was 48.h-1. Electroencephalogram (EEG) measures of sleep, electrocardiograms and finger pulse amplitudes were continuously recorded. Regardless of the day condition, when compared with undisturbed nights, the nocturnal increase in the level of heart rate induced by heat exposure disappeared when noise was added. Percentages, delays, magnitudes and costs of cardiac and vascular responses as well as EEG events such as transient activation phases (TAP) due to noise were not affected by nocturnal thermal load or by the preceding daytime exposure to disturbances.(ABSTRACT TRUNCATED AT 250 WORDS)

25 citations

References
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Journal ArticleDOI
TL;DR: The sleep of a group of Ss used to regular exercise both while they were exercising and over a relatively prolonged period of time was studied.
Abstract: DELTA (slow wave, stages 3 and 4) sleep has been widely thought of as deep sleep according to criteria involving cerebral responsiveness or ease of arousal. 1-5 On the other hand, it is commonly felt that exercise promotes sound or deep sleep, a notion supported by recent experimental studies which indicate the delta sleep-promoting effects of exercise both in animals 6,7 and man. 8 Although it was shown in this laboratory 8 that subjects (Ss) who exercise regularly have more delta sleep on days with exercise than on days without it, it was not possible to determine the duration of the effects of exercise on sleep since the Ss never went without exercise for more than two consecutive days. Hence, we decided to study the sleep of a group of Ss used to regular exercise both while they were exercising and over a relatively prolonged

195 citations


"Daytime noise and subsequent night ..." refers background or result in this paper

  • ...Exercise deprivation during the day, however, led to an increase in the amount of wakefulness, in the number of body movements, and to a decrease in SWS (Baekeland 1970). Similar effects were found by Lester et al. (1967) during nights which precede examinations....

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  • ...Exercise deprivation during the day, however, led to an increase in the amount of wakefulness, in the number of body movements, and to a decrease in SWS (Baekeland 1970). Similar effects were found by Lester et al. (1967) during nights which precede examinations. Finally, physical stress produces contradictory results: while Shapiro et al. (1975) found increased SWS, interpreted as a result of increased metabolic processes, Walker et al. (1978) demonstrated unaffected sleep after acute physical load....

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  • ...Exercise deprivation during the day, however, led to an increase in the amount of wakefulness, in the number of body movements, and to a decrease in SWS (Baekeland 1970). Similar effects were found by Lester et al. (1967) during nights which precede examinations. Finally, physical stress produces contradictory results: while Shapiro et al. (1975) found increased SWS, interpreted as a result of increased metabolic processes, Walker et al. (1978) demonstrated unaffected sleep after acute physical load. From these different findings it emerges as a possible conclusion that different forms of stress cause differing reactions in the CNS: stimuli having a component causing fear (or more general intense excitation) are answered differently from stimuli which only augment processing in the CNS. If physical activity has none of these components, it has no effects, supporting the thesis of Horne (1980), that SWS points more towards brain restitution than towards body restitution. The increase in SWS in the present study would thus be a sign of the need for an additional recovery because of the preceding acoustical load without evoking a long lasting arousal reaction. A new aspect of sleep processes was given by Borbdly (1982) who assumed a two process model of sleep regulation with a sleep dependant process S which increases during waking and declines during sleep, and a sleep independant process C which reflects the circadian rhythmic variation of sleep propensity....

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  • ...This finding does not exactly acccord with the results of Blois et al. (1980) who indeed found a small increase in stage 3 sleep, but mainly a decrease in REM sleep....

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  • ...Exercise deprivation during the day, however, led to an increase in the amount of wakefulness, in the number of body movements, and to a decrease in SWS (Baekeland 1970). Similar effects were found by Lester et al. (1967) during nights which precede examinations. Finally, physical stress produces contradictory results: while Shapiro et al. (1975) found increased SWS, interpreted as a result of increased metabolic processes, Walker et al....

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Journal ArticleDOI
TL;DR: The occurrence of GSR “storms” during slow-wave sleep is consistent with the notion of release of cortical or other inhibitory influences during this state, but another mechanism is needed to explain the fact that presleep stress increases the frequency of G SRs in all stages of sleep, while simultaneously decreasing the percentage of slow- wave sleep.
Abstract: The number of nocturnal galvanic skin responses-(GSRs) varied widely between the electroencephalograph (EEG) stages of sleep as well as from night to night and from person to person. As others have found, non-specific GSRs occurred much more frequently during stage IV than other EEG stages, and were rare in stage REM. However, night-to-night variation and individual differences were related to the presleep state of the person. In general, electrodermal activity increased in all EEG stages as daytime stress increased, being especially great on nights preceding important school examinations. The nocturnal EEG profile was also related to the presleep state, the percentage of stage IV decreasing as daytime stress increased. The percentage of stage REM showed no systematic relation to stress. The occurrence of GSR “storms” during slow-wave sleep is consistent with the notion of release of cortical or other inhibitory influences during this state, but another mechanism is needed to explain the fact that presleep stress increases the frequency of GSRs in all stages of sleep, while simultaneously decreasing the percentage of slow-wave sleep.

84 citations

Journal ArticleDOI
TL;DR: The hypothesis that SWS is involved in the recovery process from fatigue is supported, with a progressive increase over the whole-night sleep record found with progressively increasing physical fatigue.
Abstract: The effects of six graded and measured exercise activities on sleep patterns were investigated in two healthy young men. Electrophysiological recording were made continuously throughout the night to distinguish sleep states. This experiment was designed to test the hypothesis of a relation between physical activity and slow-wave sleep (SWS: stages 3 and 4 of non-REM sleep). A progressive increase in SWS over the whole-night sleep record was found with progressively increasing physical fatigue. A fall in rapid-eye-movement (REM) sleep and at higher exercise levels, of stage 2 sleep, was found. The results support the hypothesis that SWS is involved in the recovery process from fatigue.

79 citations

Journal ArticleDOI
TL;DR: The foregoing analysis of behavioral sleep phenomenology shows that the most significant factual and theoretical aspects of sleep can be logically organized only according to several criteria, it being impossible to choose a singli one as truly paradigmatic.
Abstract: The foregoing analysis of behavioral sleep phenomenology shows that the most significant factual and theoretical aspects of sleep can be logically organized only according to several criteria, it being impossible to choose a singli one as truly paradigmatic. For this reason an ordinal classification of sleep phases was preferred. This fact does not detract from the usefulness of classifications based consistently on 1 criterion at a time (e.g.: synchronized-desynchronized; quiet-active; orthodoxical-paradoxical; NREM-REM; homeostatic-poikilostatic; spindle wave-slow wave-fast wave; external appetitive-internal appetitive-internal consummatory; and so on). In this respect, the bioelectrical classification is surely the best as it allows an analytical subdivision of the evolution of sleep with high resolving power137–139. In particular, the electroencephalographic activity of late phase II (stage 4 in man139 and slow wave11 or deep slow wave140 sleep in the cat) appears to be related to the triggering mechanisms and to the quantitative regulation of the circadian amount of phase III3,5,11,140. However, in extending the field of functional implications of sleep phenomenology other criteria may be more significant. In fact, the somatic and vegetative events of sleep also lend themselves to an analysis according to the behavioral model of ethology6,141–144 and the theory of homeostasis3–5, 145, respectively. As an example, a number of classifying criteria are indicated in the table, where others, particularly neurochemical ones146,147, could be added. At any rate, the difficulty of organizing sleep events into a satisfactory operational scheme is due to the fact that sleep is still an open problem as far as its mechanisms and functional significance are concerned.

77 citations

Journal ArticleDOI

65 citations


"Daytime noise and subsequent night ..." refers background in this paper

  • ...There are numerous reports on the influence of noise on the cardiovascular system, the somatomotor system, the endocrine system, and on sensory functions other than audition (for references see Fruhstorfer and Hensel 1980; Borg 1981)....

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The findings support the assumption that strong daytime noise may interfere with subsequent sleep processes.