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| Author | Dhaliwal, S.S.; Keller, J.; Le, H.-N.; Lewin, D.S. | ||||
| Title | Sleep Disturbance among Pregnant Women: The Influence of Environmental and Contextual Factors | Type | Journal Article | ||
| Year | 2019 | Publication | Sleep | Abbreviated Journal | |
| Volume | 42 | Issue | Supplement_1 | Pages | A270-A271 |
| Keywords | Human Health | ||||
| Abstract | Introduction Disrupted sleep during pregnancy affects nearly 85% of women. This can contribute to psychological distress and antenatal depression. The aims of the current project were to test whether (a) poorer subjective sleep quality contributed to greater depression and anxiety symptoms, and (b) contextual factors predicted clinically significant sleep disturbance after adjusting for socioeconomic status (SES). Methods In a mixed-methods study, 418 pregnant women (age: M=32.4 years; gestation: M=28.4 weeks, SD=8.4 weeks; 58% Black) completed the Pittsburgh Sleep Quality Index (PSQI), measures of pregnancy-related physiological factors, and provided details about their sleep environment. They also rated perinatal depression, anxiety, and SES (Hollingshead and MacArthur Ladder). Sixty-two women completed these measures again later in pregnancy (gestation M = 34.2 weeks). A subset of seven women underwent actigraphy (9-nights) during their third trimester. Logistic regressions adjusted for age, BMI, race, sleep disordered breathing, and gestational week. Results Subjective sleep quality was significantly poorer among Black women and those with higher BMI. Physiological factors (i.e., restless leg syndrome, nocturnal urination, and acid reflux) explained subjective sleep disturbance after accounting for gestational week (ps<.01). Among women with history of psychopathology (n=221), sleep disturbance was significantly related to anxiety and depression symptoms (ps<.01), with greater sleep disturbance (PSQI score >5) predicting clinically significant antenatal depression (B = .38, p<.05). However, those who rated their social standing as higher reported lower sleep disturbance throughout pregnancy, even after adjusting for mood and anxiety (B= .86, SE =.41; p<.05). There was a dose-response positive association between sleep disturbance and depression severity among Black women only (B = .89; p<.05). Among lower SES Black women, environmental factors (greater ambient noise and light pollution) partially mediated this effect (B= .45, SE =.17; p<.01). Conclusion Sociocontextual factors may explain sleep disturbance severity among low-income pregnant Black women, above and beyond traditional metrics of SES. Higher subjective SES may be protective against sleep disturbance and psychiatric distress. Assessments of sleep during pregnancy should account for physiological considerations and environmental disruptions, alongside mood and anxiety. |
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| ISSN | 0161-8105 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | GFZ @ kyba @ | Serial | 2323 | ||
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| Author | Ohayon, M.M.; Milesi, C. | ||||
| Title | Artificial Outdoor Nighttime Lights Associate with Altered Sleep Behavior in the American General Population | Type | Journal Article | ||
| Year | 2016 | Publication | Sleep | Abbreviated Journal | Sleep |
| Volume | 39 | Issue | 6 | Pages | 1311-1320 |
| Keywords | Human Health; Remote Sensing; Sleep | ||||
| Abstract | STUDY OBJECTIVES: Our study aims to explore the associations between outdoor nighttime lights (ONL) and sleep patterns in the human population. METHODS: Cross-sectional telephone study of a representative sample of the general US population age 18 y or older. 19,136 noninstitutionalized individuals (participation rate: 83.2%) were interviewed by telephone. The Sleep-EVAL expert system administered questions on life and sleeping habits; health; sleep, mental and organic disorders (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision; International Classification of Sleep Disorders, Second Edition; International Classification of Diseases, 10(th) Edition). Individuals were geolocated by longitude and latitude. Outdoor nighttime light measurements were obtained from the Defense Meteorological Satellite Program's Operational Linescan System (DMSP/OLS), with nighttime passes taking place between 19:30 and 22:30 local time. Light data were correlated precisely to the geolocation of each participant of the general population sample. RESULTS: Living in areas with greater ONL was associated with delayed bedtime (P < 0.0001) and wake up time (P < 0.0001), shorter sleep duration (P < 0.01), and increased daytime sleepiness (P < 0.0001). Living in areas with greater ONL also increased the dissatisfaction with sleep quantity and quality (P < 0.0001) and the likelihood of having a diagnostic profile congruent with a circadian rhythm disorder (P < 0.0001). CONCLUSIONS: Although they improve the overall safety of people and traffic, nighttime lights in our streets and cities are clearly linked with modifications in human sleep behaviors and also impinge on the daytime functioning of individuals living in areas with greater ONL. | ||||
| Address | NASA Ames Research Center, Moffett Field, CA | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0161-8105 | ISBN | Medium | ||
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| Notes | PMID:27091523; PMCID:PMC4863221 | Approved | no | ||
| Call Number | GFZ @ kyba @ | Serial | 2551 | ||
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| Author | Obayashi, K.; Yamagami, Y.; Kurumatani, N.; Saeki, K. | ||||
| Title | Bedroom lighting environment and incident diabetes mellitus: a longitudinal study of the HEIJO-KYO cohort | Type | Journal Article | ||
| Year | 2019 | Publication | Sleep Medicine | Abbreviated Journal | Sleep Medicine |
| Volume | 65 | Issue | Pages | 1-3 | |
| Keywords | Human Health; Metabolic disorders; diabetes; geriatrics | ||||
| Abstract | Objectives Light information received by the brain influences human circadian timing and metabolism; low-level light at night (LAN) significantly increased body mass and led to prediabetes in mice. We hypothesized that LAN exposure increases the diabetes risk in humans. The aim of the present study was to evaluate a longitudinal association between LAN exposure and the incidence of diabetes in a general population. Methods In our prospective cohort study, bedroom light intensity was measured at 1-min intervals in 678 elderly participants without diabetes at baseline. The average light intensity recorded between bedtimes and rise times over two consecutive nights was used in the analysis. Results During follow-up (median, 42 months), 19 of the 678 participants (mean age, 70.6 years) developed diabetes. Poisson regression models revealed that the incidence rate for diabetes was significantly higher in the LAN group (average ≥5 lux, N = 128) than the dark group (average <5 lux, N = 550) (incidence rate ratio, 3.74; 95% confidence interval (CI), 1.55–9.05; p=0.003). Further propensity score adjustments in relation to LAN produced consistent results (incidence rate ratio, 3.19; 95% CI, 1.38–7.35; p=0.007). When the cut-off value of LAN was decreased to 3 lux, the relationship remained significant (incidence rate ratio 2.74; 95% CI, 1.19–6.33; p=0.018). Conclusions Our findings suggest that LAN exposure increases the incidence of diabetes in a general elderly population. Further research involving a large cohort with new-onset diabetes is warranted to elucidate these findings. |
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| Address | Department of Epidemiology, Nara Medical University School of Medicine, 840 Shijocho, Kashiharashi, Nara, 634-8521, Japan; obayashi(at)naramed-u.ac.jp | ||||
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| Publisher | Elsevier | Place of Publication | Editor | ||
| Language | English | Summary Language | English | Original Title | |
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| ISSN | 1389-9457 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | GFZ @ kyba @ | Serial | 2605 | ||
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| Author | Choi, S. J., Park, H. R. & Joo, E. Y. | ||||
| Title | Effects of Light on Daytime Sleep in 12 Hours Night Shift Workers: A Field Study | Type | Journal Article | ||
| Year | 2019 | Publication | Korean Sleep Research Society | Abbreviated Journal | |
| Volume | 16 | Issue | 1 | Pages | 26-35 |
| Keywords | Human Health; Sleep | ||||
| Abstract | Objectives: Night shift workers suffer from sleep and daytime disturbances due to circadian misalignment. To investigate the role of environmental light in daytime sleep following 12 h-night shift work. Methods: we enrolled 12 h-shift female nurses working at one university-affiliated hospital (n=10, mean age 26.6 years, shift work duration 3.8 years). This is a cross-over study to compare sleep between under light exposure (30 lux) and in the dark (<5 lux) following 12 h-night duty. Two sessions of experiments were underwent and the interval between sessions was about a month. Psychomotor vigilance test (PVT) had performed on awakening from sleep at each session and sleep-wake pattern had been monitored by actigraphy throughout the study period. Daytime sleep was also compared with night sleep of age-and gender matched daytime workers (n=10). Results: Sleep parameters and PVT scores were not different between two light conditions. Activities during sleep seemed to be more abundant under 30 lux condition than in the dark, which was not significant. Compared to night sleep, daytime sleep of shift workers was different in terms of rapid eye movement (REM) sleep. Three shift workers showed sleep onset REM sleep and first REM sleep period was the longest during daytime sleep. Conclusions: Unexpectedly, daytime sleep of 12 h night shift workers was well-maintained regardless of light exposure. Early occurrence of REM sleep and shorter sleep latency during daytime sleep suggest that shift workers meet with misalignment of circadian rhythm as well as increased homeostatic sleep pressure drive. | ||||
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| Language | Korean | Summary Language | Original Title | ||
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| Notes | Approved | no | |||
| Call Number | IDA @ intern @ | Serial | 2635 | ||
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| Author | Woods, H. C., & Scott, H. | ||||
| Title | Merging the Biological and Cognitive Processes of Sleep and Screens | Type | Journal Article | ||
| Year | 2019 | Publication | Current Sleep Medicine Reports | Abbreviated Journal | |
| Volume | 5 | Issue | 3 | Pages | 150-155 |
| Keywords | Human Health | ||||
| Abstract | Purpose of Review Screens are a permanent feature of life today and we have reached an interesting juncture with different research agendas investigating the biological and cognitive aspects of screen use separately. This review argues that it is timely and indeed essential that we bring together these research areas to fully understand both positive and negative aspects of screen use. Recent Findings More recent work is starting to take a more cohesive approach to understanding how device use pre-bedtime can impact our sleep by including both light and content in their experimental protocols which is a welcome development leading to a more nuanced understanding of both biological and cognitive processes. Summary We call for an open and collaborative approach to gain momentum in this direction of acknowledging both biological and cognitive factors enabling us to understand the relative impacts of both whilst using screens with regard to both light and content. |
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| Notes | Approved | no | |||
| Call Number | IDA @ intern @ | Serial | 2640 | ||
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