| 1. |
- Basner, Mathias, et al.
(författare)
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Associations of bedroom PM2.5, CO2, temperature, humidity, and noise with sleep: An observational actigraphy study
- 2023
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Ingår i: Sleep Health. - 2352-7218 .- 2352-7226.
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Tidskriftsartikel (refereegranskat)abstract
- Objective Climate change and urbanization increasingly cause extreme conditions hazardous to health. The bedroom environment plays a key role for high-quality sleep. Studies objectively assessing multiple descriptors of the bedroom environment as well as sleep are scarce. Methods Particulate matter with a particle size <2.5 µm (PM2.5), temperature, humidity, carbon dioxide (CO2), barometric pressure, and noise levels were continuously measured for 14 consecutive days in the bedroom of 62 participants (62.9% female, mean ± SD age: 47.7 ± 13.2 years) who wore a wrist actigraph and completed daily morning surveys and sleep logs. Results In a hierarchical mixed effect model that included all environmental variables and adjusted for elapsed sleep time and multiple demographic and behavioral variables, sleep efficiency calculated for consecutive 1-hour periods decreased in a dose-dependent manner with increasing levels of PM2.5, temperature, CO2, and noise. Sleep efficiency in the highest exposure quintiles was 3.2% (PM2.5, p < .05), 3.4% (temperature, p < .05), 4.0% (CO2, p < .01), and 4.7% (noise, p < .0001) lower compared to the lowest exposure quintiles (all p-values adjusted for multiple testing). Barometric pressure and humidity were not associated with sleep efficiency. Bedroom humidity was associated with subjectively assessed sleepiness and poor sleep quality (both p < .05), but otherwise environmental variables were not statistically significantly associated with actigraphically assessed total sleep time and wake after sleep onset or with subjectively assessed sleep onset latency, sleep quality, and sleepiness. Assessments of bedroom comfort suggest subjective habituation irrespective of exposure levels. Conclusions These findings add to a growing body of evidence highlighting the importance of the bedroom environment—beyond the mattress—for high-quality sleep.
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| 2. |
- Basner, Mathias, et al.
(författare)
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ICBEN Review of Research on the Biological Effects of Noise 2011-2014
- 2015
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Ingår i: Noise & Health. - : Medknow. - 1463-1741 .- 1998-4030. ; 17:75, s. 57-82
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Forskningsöversikt (refereegranskat)abstract
- The mandate of the International Commission on Biological Effects of Noise (ICBEN) is to promote a high level of scientific research concerning all aspects of noise-induced effects on human beings and animals. In this review, ICBEN team chairs and co-chairs summarize relevant findings, publications, developments, and policies related to the biological effects of noise, with a focus on the period 2011-2014 and for the following topics: Noise-induced hearing loss; nonauditory effects of noise; effects of noise on performance and behavior; effects of noise on sleep; community response to noise; and interactions with other agents and contextual factors. Occupational settings and transport have been identified as the most prominent sources of noise that affect health. These reviews demonstrate that noise is a prevalent and often underestimated threat for both auditory and nonauditory health and that strategies for the prevention of noise and its associated negative health consequences are needed to promote public health.
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| 3. |
- Smith, Michael, et al.
(författare)
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Environmental stressors, sleep, and a visit from St. Nicholas
- 2023
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Ingår i: SLEEP Advances. - 2632-5012. ; 4:1
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Forskningsöversikt (refereegranskat)abstract
- The importance of adequate quantity and quality of sleep is increasingly recognized by clinicians, policy makers, and the public as a critical cornerstone of good physical and mental health. Although progress is being made, the crucial role of sleep disturbance by environmental stressors is often neglected in public health discourse, as was highlighted recently by Lim et al. [1] To further stimulate this discussion, we here highlight the major clinical and public health issues of adequate quantity and quality of sleep via a narrative review on the effects of environmental stressors on sleep, framed within the context of the 1823 poem A Visit From St. Nicholas by Clement Clarke Moore [2].
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| 4. |
- Smith, Michael, et al.
(författare)
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Traffic noise-induced changes in wake-propensity measured with the Odds-Ratio Product (ORP)
- 2022
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697. ; 805
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Tidskriftsartikel (refereegranskat)abstract
- Nocturnal traffic noise can disrupt sleep and impair physical and mental restoration, but classical sleep scoring techniques may not fully capture subtle yet clinically relevant alterations of sleep induced by noise. We used a validated continuous measure of sleep depth and quality based on automatic analysis of physiologic sleep data, termed Wake Propensity (WP), to investigate temporal changes of sleep in response to nocturnal noise events in 3-s epochs. Seventy-two healthy participants (mean age 40.3 years, range 18–71 years, 40 females, 32 males) slept for 11 nights in a laboratory, during which we measured sleep with polysomnography. In 8 nights, participants were exposed to 40, 80 or 120 road, rail and/or aircraft noise events with maximum noise levels of 45–65 dB LAS,max during 8-h sleep opportunities. We analyzed sleep macrostructure and event-related change of WP during noise exposure with linear mixed models. Nocturnal traffic noise led to event-related shifts towards wakefulness and less deep, more unstable sleep (increase in WP relative to pre-noise baseline ranging from +29.5% at 45 dB to +38.3% at 65 dB; type III effect p < 0.0001). Sleep depth decreased dynamically with increasing noise level, peaking when LAS,max was highest. This change in WP was stronger and occurred more quickly for events where the noise onset was more rapid (road and rail) compared to more gradually time-varying noise (aircraft). Sleep depth did not immediately recover to pre-noise WP, leading to decreased sleep stability across the night compared to quiet nights, which was greater with an increasing number of noise events (standardized β = 0.053, p = 0.003). Further, WP was more sensitive to noise than classical arousals. Results demonstrate the usefulness of WP as a measure of the effects of external stimuli on sleep, and show WP is a more sensitive measure of noise-induced sleep disruption than traditional methods of sleep analysis.
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| 5. |
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- 2019
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Tidskriftsartikel (refereegranskat)
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