Subjects -> HEALTH AND SAFETY (Total: 1572 journals)
    - CIVIL DEFENSE (22 journals)
    - DRUG ABUSE AND ALCOHOLISM (86 journals)
    - HEALTH AND SAFETY (744 journals)
    - HEALTH FACILITIES AND ADMINISTRATION (390 journals)
    - OCCUPATIONAL HEALTH AND SAFETY (115 journals)
    - PHYSICAL FITNESS AND HYGIENE (133 journals)
    - WOMEN'S HEALTH (82 journals)

HEALTH AND SAFETY (744 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 203 Journals sorted alphabetically
16 de Abril     Open Access   (Followers: 4)
ACM Transactions on Computing for Healthcare     Hybrid Journal   (Followers: 5)
Acta Informatica Medica     Open Access   (Followers: 3)
Acta Scientiarum. Health Sciences     Open Access   (Followers: 3)
Adultspan Journal     Hybrid Journal   (Followers: 1)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 13)
Advances in Public Health     Open Access   (Followers: 32)
Adversity and Resilience Science : Journal of Research and Practice     Hybrid Journal   (Followers: 4)
African Health Sciences     Open Access   (Followers: 6)
African Journal of Health Professions Education     Open Access   (Followers: 7)
Afrimedic Journal     Open Access   (Followers: 3)
Ageing & Society     Hybrid Journal   (Followers: 48)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 9)
AJOB Empirical Bioethics     Hybrid Journal   (Followers: 4)
Akademika     Open Access   (Followers: 1)
American Journal of Family Therapy     Hybrid Journal   (Followers: 9)
American Journal of Health Economics     Full-text available via subscription   (Followers: 22)
American Journal of Health Education     Hybrid Journal   (Followers: 39)
American Journal of Health Promotion     Hybrid Journal   (Followers: 35)
American Journal of Health Sciences     Open Access   (Followers: 13)
American Journal of Preventive Medicine     Hybrid Journal   (Followers: 31)
American Journal of Public Health     Full-text available via subscription   (Followers: 299)
American Journal of Public Health Research     Open Access   (Followers: 31)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 9)
Annales des Sciences de la Santé     Open Access  
Annali dell'Istituto Superiore di Sanità     Open Access  
Annals of Global Health     Open Access   (Followers: 16)
Annals of Health Law     Open Access   (Followers: 6)
Applied Biosafety     Hybrid Journal   (Followers: 1)
Applied Ergonomics     Hybrid Journal   (Followers: 18)
Applied Research In Health And Social Sciences: Interface And Interaction     Open Access   (Followers: 5)
Apuntes Universitarios     Open Access   (Followers: 1)
Archive of Community Health     Open Access   (Followers: 1)
Archives of Community Medicine and Public Health     Open Access   (Followers: 3)
Archives of Medicine and Health Sciences     Open Access   (Followers: 7)
Archives of Suicide Research     Hybrid Journal   (Followers: 11)
Archivos de Prevención de Riesgos Laborales     Open Access  
Arquivos de Ciências da Saúde     Open Access  
Asia Pacific Journal of Counselling and Psychotherapy     Hybrid Journal   (Followers: 11)
Asia Pacific Journal of Health Management     Full-text available via subscription   (Followers: 6)
Asia-Pacific Journal of Public Health     Hybrid Journal   (Followers: 15)
Asian Journal of Gambling Issues and Public Health     Open Access   (Followers: 5)
Asian Journal of Medicine and Health     Open Access   (Followers: 1)
Atención Primaria     Open Access   (Followers: 2)
Atención Primaria Práctica     Open Access   (Followers: 1)
Australasian Journal of Paramedicine     Open Access   (Followers: 7)
Australian Advanced Aesthetics     Full-text available via subscription   (Followers: 4)
Australian Family Physician     Full-text available via subscription   (Followers: 3)
Australian Indigenous HealthBulletin     Free   (Followers: 5)
Autism & Developmental Language Impairments     Open Access   (Followers: 16)
Bijzijn     Hybrid Journal   (Followers: 1)
Bijzijn XL     Hybrid Journal  
Biomedical Safety & Standards     Full-text available via subscription   (Followers: 7)
Biosafety and Health     Open Access   (Followers: 1)
Biosalud     Open Access   (Followers: 1)
Birat Journal of Health Sciences     Open Access  
BLDE University Journal of Health Sciences     Open Access  
BMC Oral Health     Open Access   (Followers: 7)
BMC Pregnancy and Childbirth     Open Access   (Followers: 24)
BMJ Simulation & Technology Enhanced Learning     Hybrid Journal   (Followers: 13)
Boletin Médico de Postgrado     Open Access  
Brazilian Journal of Medicine and Human Health     Open Access  
British Journal of Health Psychology     Hybrid Journal   (Followers: 53)
Buletin Penelitian Kesehatan     Open Access   (Followers: 2)
Buletin Penelitian Sistem Kesehatan     Open Access  
Bulletin of the World Health Organization     Open Access   (Followers: 23)
Cadernos de Educação, Saúde e Fisioterapia     Open Access   (Followers: 1)
Cadernos de Saúde     Open Access   (Followers: 1)
Cadernos Saúde Coletiva     Open Access   (Followers: 1)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 16)
Canadian Family Physician     Partially Free   (Followers: 13)
Canadian Journal of Community Mental Health     Full-text available via subscription   (Followers: 14)
Canadian Journal of Human Sexuality     Hybrid Journal   (Followers: 2)
Canadian Journal of Public Health     Hybrid Journal   (Followers: 28)
Cannabis and Cannabinoid Research     Hybrid Journal   (Followers: 2)
Carta Comunitaria     Open Access  
Case Reports in Women's Health     Open Access   (Followers: 4)
Case Studies in Fire Safety     Open Access   (Followers: 27)
CASUS : Revista de Investigación y Casos en Salud     Open Access   (Followers: 1)
Central Asian Journal of Global Health     Open Access   (Followers: 2)
CES Medicina     Open Access  
CES Salud Pública     Open Access  
Child and Adolescent Obesity     Open Access   (Followers: 1)
Child's Nervous System     Hybrid Journal  
Childhood Obesity and Nutrition     Open Access   (Followers: 12)
Children     Open Access   (Followers: 2)
CHRISMED Journal of Health and Research     Open Access   (Followers: 3)
Christian Journal for Global Health     Open Access   (Followers: 1)
Ciência & Saúde Coletiva     Open Access   (Followers: 2)
Ciencia & Salud     Open Access   (Followers: 1)
Ciencia & Trabajo     Open Access   (Followers: 2)
Ciencia e Innovación en Salud     Open Access  
Ciencia y Cuidado     Open Access   (Followers: 1)
Ciencia y Salud     Open Access   (Followers: 3)
Ciencia y Salud Virtual     Open Access  
Ciencia, Tecnología y Salud     Open Access   (Followers: 2)
Cities & Health     Hybrid Journal   (Followers: 4)
Clinical and Experimental Health Sciences     Open Access   (Followers: 1)
ClinicoEconomics and Outcomes Research     Open Access   (Followers: 2)
Clocks & Sleep     Open Access   (Followers: 2)
CME     Hybrid Journal   (Followers: 2)
CoDAS     Open Access  
Community Health     Open Access   (Followers: 6)
Conflict and Health     Open Access   (Followers: 8)
Contact (CTC)     Open Access  
Contraception and Reproductive Medicine     Open Access   (Followers: 2)
Cuaderno de investigaciones: semilleros andina     Open Access   (Followers: 3)
Cuadernos de la Escuela de Salud Pública     Open Access  
Current Opinion in Behavioral Sciences     Hybrid Journal   (Followers: 11)
Current Opinion in Environmental Science & Health     Hybrid Journal   (Followers: 1)
Das österreichische Gesundheitswesen ÖKZ     Hybrid Journal   (Followers: 1)
Day Surgery Australia     Full-text available via subscription   (Followers: 2)
Design for Health     Hybrid Journal  
Digital Health     Open Access   (Followers: 10)
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 16)
Diversity and Equality in Health and Care     Open Access   (Followers: 9)
Diversity of Research in Health Journal     Open Access  
Dramatherapy     Hybrid Journal   (Followers: 3)
Drogues, santé et société     Open Access   (Followers: 2)
Duazary     Open Access   (Followers: 1)
Düzce Üniversitesi Sağlık Bilimleri Enstitüsü Dergisi / Journal of Duzce University Health Sciences Institute     Open Access  
Early Childhood Research Quarterly     Hybrid Journal   (Followers: 29)
East African Journal of Public Health     Full-text available via subscription   (Followers: 4)
Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity     Hybrid Journal   (Followers: 26)
EcoHealth     Hybrid Journal   (Followers: 6)
Education for Health     Open Access   (Followers: 9)
ElectronicHealthcare     Full-text available via subscription   (Followers: 4)
Elsevier Ergonomics Book Series     Full-text available via subscription   (Followers: 5)
Emerging Trends in Drugs, Addictions, and Health     Open Access   (Followers: 1)
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Environmental Disease     Open Access   (Followers: 4)
Environmental Sciences Europe     Open Access   (Followers: 2)
Epidemics     Open Access   (Followers: 6)
Epidemiologic Perspectives & Innovations     Open Access   (Followers: 7)
Epidemiology, Biostatistics and Public Health     Open Access   (Followers: 24)
EsSEX : Revista Científica     Open Access   (Followers: 1)
Estudios sociales : Revista de alimentación contemporánea y desarrollo regional     Open Access   (Followers: 1)
Ethics & Human Research     Hybrid Journal   (Followers: 4)
Ethics, Medicine and Public Health     Full-text available via subscription   (Followers: 8)
Ethiopian Journal of Health Development     Open Access   (Followers: 8)
Ethiopian Journal of Health Sciences     Open Access   (Followers: 8)
Ethnicity & Health     Hybrid Journal   (Followers: 16)
Eurasian Journal of Health Technology Assessment     Open Access   (Followers: 1)
EUREKA : Health Sciences     Open Access   (Followers: 3)
European Journal of Health Communication     Open Access   (Followers: 2)
European Journal of Investigation in Health, Psychology and Education     Open Access   (Followers: 6)
European Medical, Health and Pharmaceutical Journal     Open Access   (Followers: 3)
Evaluation & the Health Professions     Hybrid Journal   (Followers: 11)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Expressa Extensão     Open Access  
F&S Reports     Open Access   (Followers: 1)
Face à face     Open Access   (Followers: 1)
Families, Systems, & Health     Full-text available via subscription   (Followers: 10)
Family & Community Health     Hybrid Journal   (Followers: 15)
Family Medicine and Community Health     Open Access   (Followers: 10)
Family Relations     Partially Free   (Followers: 15)
FASEB BioAdvances     Open Access  
Fatigue : Biomedicine, Health & Behavior     Hybrid Journal   (Followers: 2)
Finnish Journal of eHealth and eWelfare : Finjehew     Open Access  
Food and Public Health     Open Access   (Followers: 19)
Food Hydrocolloids for Health     Open Access  
Food Quality and Safety     Open Access   (Followers: 2)
Frontiers in Digital Health     Open Access   (Followers: 3)
Frontiers in Neuroergonomics     Open Access   (Followers: 1)
Frontiers in Public Health     Open Access   (Followers: 9)
Frontiers of Health Services Management     Partially Free   (Followers: 9)
Gaceta Sanitaria     Open Access   (Followers: 3)
Galen Medical Journal     Open Access   (Followers: 1)
Ganesha Journal     Open Access  
Gazi Sağlık Bilimleri Dergisi     Open Access  
Geospatial Health     Open Access   (Followers: 1)
Gestão e Desenvolvimento     Open Access  
Gesundheitsökonomie & Qualitätsmanagement     Hybrid Journal   (Followers: 9)
Giornale Italiano di Health Technology Assessment     Full-text available via subscription  
Global Advances in Health and Medicine     Open Access  
Global Challenges     Open Access  
Global Health : Science and Practice     Open Access   (Followers: 9)
Global Health Annual Review     Open Access   (Followers: 3)
Global Health Journal     Open Access   (Followers: 3)
Global Health Promotion     Hybrid Journal   (Followers: 19)
Global Journal of Health Science     Open Access   (Followers: 12)
Global Journal of Public Health     Open Access   (Followers: 17)
Global Medical & Health Communication     Open Access   (Followers: 2)
Global Mental Health     Open Access   (Followers: 11)
Global Reproductive Health     Open Access   (Followers: 1)
Global Security : Health, Science and Policy     Open Access   (Followers: 1)
Global Transitions     Open Access   (Followers: 1)
Global Transitions Proceedings     Open Access  
Globalization and Health     Open Access   (Followers: 9)
Hacia la Promoción de la Salud     Open Access  
Hastane Öncesi Dergisi     Open Access  
Hastings Center Report     Hybrid Journal   (Followers: 7)
HCU Journal     Open Access  
HEADline     Hybrid Journal  
Health & Place     Hybrid Journal   (Followers: 20)
Health & Justice     Open Access   (Followers: 6)
Health : An Interdisciplinary Journal for the Social Study of Health, Illness and Medicine     Hybrid Journal   (Followers: 17)
Health and Human Rights     Open Access   (Followers: 10)
Health and Research Journal     Open Access   (Followers: 2)
Health and Social Care Chaplaincy     Hybrid Journal   (Followers: 11)

        1 2 3 4 | Last

Similar Journals
Journal Cover
Clocks & Sleep
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2624-5175
Published by MDPI Homepage  [238 journals]
  • Clocks & Sleep, Vol. 3, Pages 236-250: Nighttime Light Hurts Mammalian
           Physiology: What Diurnal Rodent Models Are Telling Us

    • Authors: Jorge Mendoza
      First page: 236
      Abstract: Natural sunlight permits organisms to synchronize their physiology to the external world. However, in current times, natural sunlight has been replaced by artificial light in both day and nighttime. While in the daytime, indoor artificial light is of lower intensity than natural sunlight, leading to a weak entrainment signal for our internal biological clock, at night the exposure to artificial light perturbs the body clock and sleep. Although electric light at night allows us “to live in darkness”, our current lifestyle facilitates nighttime exposure to light by the use, or abuse, of electronic devices (e.g., smartphones). The chronic exposure to light at nighttime has been correlated to mood alterations, metabolic dysfunctions, and poor cognition. To decipher the brain mechanisms underlying these alterations, fundamental research has been conducted using animal models, principally of nocturnal nature (e.g., mice). Nevertheless, because of the diurnal nature of human physiology, it is also important to find and propose diurnal animal models for the study of the light effects in circadian biology. The present review provides an overview of the effects of light at nighttime on physiology and behavior in diurnal mammals, including humans. Knowing how the brain reacts to artificial light exposure, using diurnal rodent models, is fundamental for the development of new strategies in human health based in circadian biology.
      Citation: Clocks & Sleep
      PubDate: 2021-04-01
      DOI: 10.3390/clockssleep3020014
      Issue No: Vol. 3, No. 2 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 251-258: Meal and Sleep Timing before and
           during the COVID-19 Pandemic: A Cross-Sectional Anonymous Survey Study
           from Sweden

    • Authors: Christian Benedict, Luiz Eduardo Mateus Brandão, Ilona Merikanto, Markku Partinen, Bjørn Bjorvatn, Jonathan Cedernaes
      First page: 251
      Abstract: The COVID-19 pandemic and related restrictions, such as stay-at-home-orders, have significantly altered daily routines and lifestyles. Given their importance for metabolic health, we herein compared sleep and meal timing parameters during vs. before the COVID-19 pandemic based on subjective recall, in an anonymous Swedish survey. Among 191 adults (mean age: 47 years; 77.5% females), we show that social jetlag, i.e., the mismatch in sleep midpoint between work and free days, was reduced by about 17 min during the pandemic compared with the pre-pandemic state (p < 0.001). Concomitantly, respondents’ sleep midpoint was shifted toward morning hours during workdays (p < 0.001). A later daily eating midpoint accompanied the shift in sleep timing (p = 0.001). This effect was mainly driven by a later scheduled first meal (p < 0.001). No difference in the timing of the day’s last meal was found (p = 0.814). Although our survey was limited in terms of sample size and by being cross-sectional, our results suggest that the delay in sleep timing due to the COVID-19 pandemic was accompanied by a corresponding shift in the timing of early but not late meals.
      Citation: Clocks & Sleep
      PubDate: 2021-04-22
      DOI: 10.3390/clockssleep3020015
      Issue No: Vol. 3, No. 2 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 259-273: Microsleep versus Sleep Onset
           Latency during Maintenance Wakefulness Tests: Which One Is the Best Marker
           of Sleepiness'

    • Authors: Ludivine Des Champs de Boishebert, Pierre Pradat, Hélène Bastuji, François Ricordeau, Frédéric Gormand, Pierre Le Cam, Emeric Stauffer, Thierry Petitjean, Laure Peter-Derex
      First page: 259
      Abstract: The interpretation of the Maintenance Wakefulness Test (MWT) relies on sleep onset detection. However, microsleeps (MSs), i.e., brief periods of sleep intrusion during wakefulness, may occur before sleep onset. We assessed the prevalence of MSs during the MWT and their contribution to the diagnosis of residual sleepiness in patients treated for obstructive sleep apnea (OSA) or hypersomnia. The MWT of 98 patients (89 OSA, 82.6% male) were analyzed for MS scoring. Polysomnography parameters and clinical data were collected. The diagnostic value for detecting sleepiness (Epworth Sleepiness Scale > 10) of sleep onset latency (SOL) and of the first MS latency (MSL) was assessed by the area under the receiver operating characteristic (ROC) curve (AUC, 95% CI). At least one MS was observed in 62.2% of patients. MSL was positively correlated with SOL (r = 0.72, p < 0.0001) but not with subjective scales, clinical variables, or polysomnography parameters. The use of SOL or MSL did not influence the diagnostic performance of the MWT for subjective sleepiness assessment (AUC = 0.66 95% CI (0.56, 0.77) versus 0.63 95% CI (0.51, 0.74)). MSs are frequent during MWTs performed in patients treated for sleep disorders, even in the absence of subjective sleepiness, and may represent physiological markers of the wake-to-sleep transition.
      Citation: Clocks & Sleep
      PubDate: 2021-04-30
      DOI: 10.3390/clockssleep3020016
      Issue No: Vol. 3, No. 2 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 274-288: Validation Framework for Sleep
           Stage Scoring in Wearable Sleep Trackers and Monitors with Polysomnography
           Ground Truth

    • Authors: Quyen N. T. Nguyen, Toan Le, Quyen B. T. Huynh, Arveity Setty, Toi V. Vo, Trung Q. Le
      First page: 274
      Abstract: The rapid growth of point-of-care polysomnographic alternatives has necessitated standardized evaluation and validation frameworks. The current average across participant validation methods may overestimate the agreement between wearable sleep tracker devices and polysomnography (PSG) systems because of the high base rate of sleep during the night and the interindividual difference across the sampling population. This study proposes an evaluation framework to assess the aggregating differences of the sleep architecture features and the chronologically epoch-by-epoch mismatch of the wearable sleep tracker devices and the PSG ground truth. An AASM-based sleep stage categorizing method was proposed to standardize the sleep stages scored by different types of wearable trackers. Sleep features and sleep stage architecture were extracted from the PSG and the wearable device’s hypnograms. Therefrom, a localized quantifier index was developed to characterize the local mismatch of sleep scoring. We evaluated different commonly used wearable sleep tracking devices with the data collected from 22 different subjects over 30 nights of 8-h sleeping. The proposed localization quantifiers can characterize the chronologically localized mismatches over the sleeping time. The outperformance of the proposed method over existing evaluation methods was reported. The proposed evaluation method can be utilized for the improvement of the sensor design and scoring algorithm.
      Citation: Clocks & Sleep
      PubDate: 2021-05-03
      DOI: 10.3390/clockssleep3020017
      Issue No: Vol. 3, No. 2 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 1-11: Co-Sleeping between Adolescents and
           Their Pets May Not Impact Sleep Quality

    • Authors: Jessica Rosano, Tiffani Howell, Russell Conduit, Pauleen Bennett
      First page: 1
      Abstract: Pet–owner co-sleeping is increasingly common in some parts of the world. Adult owners often subjectively report benefits of co-sleeping with pets, although objective actigraphy reports conversely indicate sleep disruptions due to the pet. Because limited research is available regarding pet–owner co-sleeping in non-adult samples, the aim of this two-part study was to explore whether co-sleeping improves sleep quality in adolescents, an age group in which poor sleep patterns are well documented. In Study One, an online survey with 265 pet-owning 13-to-17-year-old participants found that over 78% co-slept with their pet. Average sleep quality scores for co-sleepers and non-co-sleepers indicated generally poor sleep, with no differences in sleep quality depending on age, gender, or co-sleeping status. Study Two consisted of two preliminary case studies, using actigraphy on dog–adolescent co-sleepers. In both cases, high sleep concordance was observed, but owners again experienced generally poor sleep quality. Future actigraphy research is needed, including larger sample sizes and a control group of non-co-sleepers, to validate the preliminary findings from this study, but our limited evidence suggests that co-sleeping with a pet may not impact sleep quality in adolescents.
      Citation: Clocks & Sleep
      PubDate: 2021-01-04
      DOI: 10.3390/clockssleep3010001
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 12-30: Health Behaviors of Higher Education
           Students from 7 Countries: Poorer Sleep Quality during the COVID-19
           Pandemic Predicts Higher Dietary Risk

    • Authors: Chen Du, Megan Chong Hueh Zan, Min Jung Cho, Jenifer I. Fenton, Pao Ying Hsiao, Richard Hsiao, Laura Keaver, Chang-Chi Lai, HeeSoon Lee, Mary-Jon Ludy, Wan Shen, Winnie Chee Siew Swee, Jyothi Thrivikraman, Kuo-Wei Tseng, Wei-Chin Tseng, Juman Almotwa, Clare E. Feldpausch, Sara Yi Ling Folk, Suzannah Gadd, Linyutong Wang, Wenyan Wang, Xinyi Zhang, Robin M. Tucker
      First page: 12
      Abstract: Health behaviors of higher education students can be negatively influenced by stressful events. The global COVID-19 pandemic presents a unique opportunity to characterize and compare health behaviors across multiple countries and to examine how these behaviors are shaped by the pandemic experience. Undergraduate and graduate students enrolled in universities in China, Ireland, Malaysia, South Korea, Taiwan, the Netherlands and the United States (USA) were recruited into this cross-sectional study. Eligible students filled out an online survey comprised of validated tools for assessing sleep quality and duration, dietary risk, alcohol misuse and physical activity between late April and the end of May 2020. Health behaviors were fairly consistent across countries, and all countries reported poor sleep quality. However, during the survey period, the COVID-19 pandemic influenced the health behaviors of students in European countries and the USA more negatively than Asian countries, which could be attributed to the differences in pandemic time course and caseloads. Students who experienced a decline in sleep quality during the COVID-19 pandemic had higher dietary risk scores than students who did not experience a change in sleep quality (p = 0.001). Improved sleep quality was associated with less sitting time (p = 0.010). Addressing sleep issues among higher education students is a pressing concern, especially during stressful events. These results support the importance of making education and behavior-based sleep programming available for higher education students in order to benefit students’ overall health.
      Citation: Clocks & Sleep
      PubDate: 2021-01-15
      DOI: 10.3390/clockssleep3010002
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 31-52: Risk-Based Decision Making: A
           Systematic Scoping Review of Animal Models and a Pilot Study on the
           Effects of Sleep Deprivation in Rats

    • Authors: Cathalijn H.C. Leenaars, Stevie Van der Mierden, Ruud N.J.M.A. Joosten, Marnix A. Van der Weide, Mischa Schirris, Maurice Dematteis, Franck L.B. Meijboom, Matthijs G.P. Feenstra, André Bleich
      First page: 31
      Abstract: Animals, including humans, frequently make decisions involving risk or uncertainty. Different strategies in these decisions can be advantageous depending the circumstances. Short sleep duration seems to be associated with more risky decisions in humans. Animal models for risk-based decision making can increase mechanistic understanding, but very little data is available concerning the effects of sleep. We combined primary- and meta-research to explore the relationship between sleep and risk-based decision making in animals. Our first objective was to create an overview of the available animal models for risky decision making. We performed a systematic scoping review. Our searches in Pubmed and Psychinfo retrieved 712 references, of which 235 were included. Animal models for risk-based decision making have been described for rodents, non-human primates, birds, pigs and honey-bees. We discuss task designs and model validity. Our second objective was to apply this knowledge and perform a pilot study on the effect of sleep deprivation. We trained and tested male Wistar rats on a probability discounting task; a “safe” lever always resulted in 1 reward, a “risky” lever resulted in 4 or no rewards. Rats adapted their preferences to variations in reward probabilities (p < 0.001), but 12 h of sleep deprivation during the light phase did not clearly alter risk preference (p = 0.21).
      Citation: Clocks & Sleep
      PubDate: 2021-01-20
      DOI: 10.3390/clockssleep3010003
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 53-65: Disorders of Arousal: A
           Chronobiological Perspective

    • Authors: Greta Mainieri, Giuseppe Loddo, Federica Provini
      First page: 53
      Abstract: Non-rapid eye movement (NREM) sleep parasomnias are characterized by motor and emotional behaviors emerging from incomplete arousals from NREM sleep and they are currently referred to as disorders of arousal (DoA). Three main clinical entities are recognized, namely confusional arousal, sleep terror and sleepwalking. DoA are largely present in pediatric populations, an age in which they are considered as transitory, unhabitual physiological events. The literature background in the last twenty years has extensively shown that DoA can persist in adulthood in predisposed individuals or even appear de novo in some cases. Even though some episodes may arise from stage 2 of sleep, most DoA occur during slow wave sleep (SWS), and particularly during the first two sleep cycles. The reasons for this timing are linked to the intrinsic structure of SWS and with the possible influence on this sleep phase of predisposing, priming and precipitating factors for DoA episodes. The objective of this paper is to review the intrinsic sleep-related features and chronobiological aspects affecting SWS, responsible for the occurrence of the majority of DoA episodes during the first part of the night.
      Citation: Clocks & Sleep
      PubDate: 2021-01-21
      DOI: 10.3390/clockssleep3010004
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 66-86: Preliminary Results: The Impact of
           Smartphone Use and Short-Wavelength Light during the Evening on Circadian
           Rhythm, Sleep and Alertness

    • Authors: Christopher Höhn, Sarah R. Schmid, Christina P. Plamberger, Kathrin Bothe, Monika Angerer, Georg Gruber, Belinda Pletzer, Kerstin Hoedlmoser
      First page: 66
      Abstract: Smartphone usage strongly increased in the last decade, especially before bedtime. There is growing evidence that short-wavelength light affects hormonal secretion, thermoregulation, sleep and alertness. Whether blue light filters can attenuate these negative effects is still not clear. Therefore, here, we present preliminary data of 14 male participants (21.93 ± 2.17 years), who spent three nights in the sleep laboratory, reading 90 min either on a smartphone (1) with or (2) without a blue light filter, or (3) on printed material before bedtime. Subjective sleepiness was decreased during reading on a smartphone, but no effects were present on evening objective alertness in a GO/NOGO task. Cortisol was elevated in the morning after reading on the smartphone without a filter, which resulted in a reduced cortisol awakening response. Evening melatonin and nightly vasodilation (i.e., distal-proximal skin temperature gradient) were increased after reading on printed material. Early slow wave sleep/activity and objective alertness in the morning were only reduced after reading without a filter. These results indicate that short-wavelength light affects not only circadian rhythm and evening sleepiness but causes further effects on sleep physiology and alertness in the morning. Using a blue light filter in the evening partially reduces these negative effects.
      Citation: Clocks & Sleep
      PubDate: 2021-01-22
      DOI: 10.3390/clockssleep3010005
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 87-97: General Anaesthesia Shifts the Murine
           Circadian Clock in a Time-Dependant Fashion

    • Authors: Nicola M. Ludin, Alma Orts-Sebastian, James F. Cheeseman, Janelle Chong, Alan F. Merry, David Cumin, Shin Yamazaki, Matthew D. M. Pawley, Guy R. Warman
      First page: 87
      Abstract: Following general anaesthesia (GA), patients frequently experience sleep disruption and fatigue, which has been hypothesized to result at least in part by GA affecting the circadian clock. Here, we provide the first comprehensive time-dependent analysis of the effects of the commonly administered inhalational anaesthetic, isoflurane, on the murine circadian clock, by analysing its effects on (a) behavioural locomotor rhythms and (b) PER2::LUC expression in the suprachiasmatic nuclei (SCN) of the mouse brain. Behavioural phase shifts elicited by exposure of mice (n = 80) to six hours of GA (2% isoflurane) were determined by recording wheel-running rhythms in constant conditions (DD). Phase shifts in PER2::LUC expression were determined by recording bioluminescence in organotypic SCN slices (n = 38) prior to and following GA exposure (2% isoflurane). Full phase response curves for the effects of GA on behaviour and PER2::LUC rhythms were constructed, which show that the effects of GA are highly time-dependent. Shifts in SCN PER2 expression were much larger than those of behaviour (c. 0.7 h behaviour vs. 7.5 h PER2::LUC). We discuss the implications of this work for understanding how GA affects the clock, and how it may inform the development of chronotherapeutic strategies to reduce GA-induced phase-shifting in patients.
      Citation: Clocks & Sleep
      PubDate: 2021-01-26
      DOI: 10.3390/clockssleep3010006
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 98-114: Prevalence of Insomnia in Two
           Saskatchewan First Nation Communities

    • Authors: James A Dosman, Chandima P Karunanayake, Mark Fenton, Vivian R Ramsden, Robert Skomro, Shelley Kirychuk, Donna C Rennie, Jeremy Seeseequasis, Clifford Bird, Kathleen McMullin, Brooke P Russell, Niels Koehncke, Thomas Smith-Windsor, Malcolm King, Sylvia Abonyi, Punam Pahwa
      First page: 98
      Abstract: Insomnia is a common problem in Canada and has been associated with increased use of health care services and economic burden. This paper examines the prevalence and risk factors for insomnia in two Cree First Nation communities in Saskatchewan, Canada. Five hundred and eighty-eight adults participated in a baseline survey conducted as part of the First Nations Sleep Health Collaborative Project. The prevalence of insomnia was 19.2% among participants with an Insomnia Severity Index score of ≥15. Following the definition of nighttime insomnia symptoms, however, the prevalence of insomnia was much higher, at 32.6%. Multivariate logistic regression modeling revealed that age, physical health, depression diagnosis, chronic pain, prescription medication use for any health condition, and waking up during the night due to terrifying dreams, nightmares, or flashbacks related to traumatic events were risk factors for insomnia among participants from two Saskatchewan Cree First Nation communities.
      Citation: Clocks & Sleep
      PubDate: 2021-01-28
      DOI: 10.3390/clockssleep3010007
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 115-131: Light, Sleep and Performance in
           Diurnal Birds

    • Authors: Anne E. Aulsebrook, Robin D. Johnsson, John A. Lesku
      First page: 115
      Abstract: Sleep has a multitude of benefits and is generally considered necessary for optimal performance. Disruption of sleep by extended photoperiods, moonlight and artificial light could therefore impair performance in humans and non-human animals alike. Here, we review the evidence for effects of light on sleep and subsequent performance in birds. There is accumulating evidence that exposure to natural and artificial sources of light regulates and suppresses sleep in diurnal birds. Sleep also benefits avian cognitive performance, including during early development. Nevertheless, multiple studies suggest that light can prolong wakefulness in birds without impairing performance. Although there is still limited research on this topic, these results raise intriguing questions about the adaptive value of sleep. Further research into the links between light, sleep and performance, including the underlying mechanisms and consequences for fitness, could shed new light on sleep evolution and urban ecology.
      Citation: Clocks & Sleep
      PubDate: 2021-01-28
      DOI: 10.3390/clockssleep3010008
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 132-178: Non-Pharmacological Interventions
           to Improve Chronic Disease Risk Factors and Sleep in Shift Workers: A
           Systematic Review and Meta-Analysis

    • Authors: Meagan E Crowther, Sally A Ferguson, Grace E Vincent, Amy C Reynolds
      First page: 132
      Abstract: Shift work is associated with adverse chronic health outcomes. Addressing chronic disease risk factors including biomedical risk factors, behavioural risk factors, as well as sleep and perceived health status, affords an opportunity to improve health outcomes in shift workers. The present study aimed to conduct a systematic review, qualitative synthesis, and meta-analysis of non-pharmacological interventions targeting chronic disease risk factors, including sleep, in shift workers. A total of 8465 records were retrieved; 65 publications were eligible for inclusion in qualitative analysis. Random-effects meta-analysis were conducted for eight eligible health outcomes, including a total of thirty-nine studies. Interventions resulted in increased objective sleep duration (Hedges’ g = 0.73; CI: 0.36, 1.10, k = 16), improved objective sleep efficiency (Hedges’ g = 0.48; CI: 0.20, 0.76, k = 10) and a small increase in both subjective sleep duration (Hedges’ g = 0.11; CI: −0.04, 0.27, k = 19) and sleep quality (Hedges’ g = 0.11; CI: −0.11, 0.33, k = 21). Interventions also improved perceived health status (Hedges’ g = 0.20; CI: −0.05, 0.46, k = 8), decreased systolic (Hedges’ g = 0.26; CI: −0.54, 0.02, k = 7) and diastolic (Hedges’ g = 0.06; CI: −0.23, 0.36, k = 7) blood pressure, and reduced body mass index (Hedges’ g = −0.04; CI: −0.37, 0.29, k = 9). The current study suggests interventions may improve chronic disease risk factors and sleep in shift workers; however, this could only be objectively assessed for a limited number of risk factor endpoints. Future interventions could explore the impact of non-pharmacological interventions on a broader range of chronic disease risk factors to better characterise targets for improved health outcomes in shift workers.
      Citation: Clocks & Sleep
      PubDate: 2021-01-28
      DOI: 10.3390/clockssleep3010009
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 179-180: Acknowledgment to Reviewers of
           Clocks & Sleep in 2020

    • Authors: Clocks & Sleep Editorial Office Clocks & Sleep Editorial Office
      First page: 179
      Abstract: The peer review process represents the driving force of journal development, with reviewers acting as the gatekeepers who ensure that Clocks & Sleep maintains its high-quality standard of published papers [...]
      Citation: Clocks & Sleep
      PubDate: 2021-02-01
      DOI: 10.3390/clockssleep3010010
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 181-188: Comment Concerning the Effects of
           Light Intensity on Melatonin Suppression in the Review “Light Modulation
           of Human Clocks, Wake, and Sleep” by A. Prayag et al.

    • Authors: Peter Bracke, Eowyn Van de Putte, Wouter R. Ryckaert
      First page: 181
      Abstract: Dose-response curves for circadian phase shift and melatonin suppression in relation to white or monochromatic nighttime illumination can be scaled to melanopic weighed illumination for normally constricted pupils, which makes them easier to interpret and compare. This is helpful for a practical applications.
      Citation: Clocks & Sleep
      PubDate: 2021-02-10
      DOI: 10.3390/clockssleep3010011
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 189-226: Circadian Rhythms of the
           Hypothalamus: From Function to Physiology

    • Authors: Rachel Van Drunen, Kristin Eckel-Mahan
      First page: 189
      Abstract: The nearly ubiquitous expression of endogenous 24 h oscillations known as circadian rhythms regulate the timing of physiological functions in the body. These intrinsic rhythms are sensitive to external cues, known as zeitgebers, which entrain the internal biological processes to the daily environmental changes in light, temperature, and food availability. Light directly entrains the master clock, the suprachiasmatic nucleus (SCN) which lies in the hypothalamus of the brain and is responsible for synchronizing internal rhythms. However, recent evidence underscores the importance of other hypothalamic nuclei in regulating several essential rhythmic biological functions. These extra-SCN hypothalamic nuclei also express circadian rhythms, suggesting distinct regions that oscillate either semi-autonomously or independent of SCN innervation. Concurrently, the extra-SCN hypothalamic nuclei are also sensitized to fluctuations in nutrient and hormonal signals. Thus, food intake acts as another powerful entrainer for the hypothalamic oscillators’ mediation of energy homeostasis. Ablation studies and genetic mouse models with perturbed extra-SCN hypothalamic nuclei function reveal their critical downstream involvement in an array of functions including metabolism, thermogenesis, food consumption, thirst, mood and sleep. Large epidemiological studies of individuals whose internal circadian cycle is chronically disrupted reveal that disruption of our internal clock is associated with an increased risk of obesity and several neurological diseases and disorders. In this review, we discuss the profound role of the extra-SCN hypothalamic nuclei in rhythmically regulating and coordinating body wide functions.
      Citation: Clocks & Sleep
      PubDate: 2021-02-25
      DOI: 10.3390/clockssleep3010012
      Issue No: Vol. 3, No. 1 (2021)
       
  • Clocks & Sleep, Vol. 3, Pages 227-235: Effects of Exercise in Patients
           with Obstructive Sleep Apnoea

    • Authors: Rodrigo Torres-Castro, Luis Vasconcello-Castillo, Homero Puppo, Ignacio Cabrera-Aguilera, Matías Otto-Yáñez, Javiera Rosales-Fuentes, Jordi Vilaró
      First page: 227
      Abstract: Obstructive sleep apnoea (OSA) constitutes a public health problem, with various systemic consequences that can increase cardiovascular morbidity and mortality as well as increase healthcare expenditure. This review discusses the rationale and effects of using general physical exercise, oropharyngeal exercises, and respiratory muscle training as an adjunctive treatment for patients with sleep apnoea. The recommended treatment for OSA is the use of continuous positive airway pressure, which is a therapy that prevents apnoea events by keeping the airways open. In the last decade, coadjuvant treatments that aim to support weight loss (including diet and physical exercise) and oropharyngeal exercises have been proposed to lower the apnoea/hypopnoea index among patients with OSA. Based on the available evidence, health professionals could decide to incorporate these therapeutic strategies to manage patients with sleep apnoea.
      Citation: Clocks & Sleep
      PubDate: 2021-03-03
      DOI: 10.3390/clockssleep3010013
      Issue No: Vol. 3, No. 1 (2021)
       
 
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