Article
Nutrition & Dietetics
Andrew M. Reiter, Gregory D. Roach, Charli Sargent
Summary: Night shift workers experience disrupted sleep, but chronotype does not significantly affect hunger and snack consumption.
Review
Humanities, Multidisciplinary
Kosha J. Mehta
Summary: Academic achievement and cognitive functions are influenced by sleep and mood/emotion, as well as other factors. This interdisciplinary review examines the effects of these factors on cognition and academic performance, and proposes models and conclusions. It questions the importance of personalized teaching methods in education and suggests the need for tailored strategies to improve teaching approaches.
HUMANITIES & SOCIAL SCIENCES COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Frank A. J. L. Scheer, Michael F. Hilton, Heather L. Evoniuk, Sally A. Shiels, Atul Malhotra, Rena Sugarbaker, R. Timothy Ayers, Elliot Israel, Anthony F. Massaro, Steven A. Shea
Summary: The study found that asthma patients experience worsened lung function and exacerbation of symptoms at night, often masked by sleep. Asthma patients exhibit significant circadian rhythms throughout the day and are more likely to use bronchodilators during the night.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Endocrinology & Metabolism
Shawn D. D. Youngstedt, Jeffrey Elliott, Salma Patel, Natalie Zi-Ching Mak, Evan Raiewski, Elias Malek, Michael Strong, Chung Jung Mun, Tyler Peters, Remun Madlol, Natasha Tasevska, Massiullah Rasoul, Cindy Nguyen, Kimberly M. Vargas M. Negrete, Andejola-Omobonike Adaralegbe, Sruthi Sudalaimuthu, Delaney Granholm, Anastasia Finch, Aryan Eksambe, Anannya Malready, Sairam Parthasarathy
Summary: Misalignment between the environment and one's circadian system can have negative effects on health, performance, and sleep. Bright light, exercise, and melatonin can aid in circadian adjustment, but no study has combined all of these stimuli at the optimal times.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Neurosciences
YuanYuan Hou, YunLei Wang, ShaoFei Song, Yao Zuo, HaoJie Zhang, Chen Bai, HaiTao Zhao, Tong Zhang
Summary: Long-term shift work can lead to circadian misalignment, causing anxiety and depression in rats by inducing loss of neurons and astrocytes in the prefrontal cortex and synaptic damage in surviving pyramidal cells.
EXPERIMENTAL NEUROLOGY
(2022)
Article
Behavioral Sciences
John A. Groeger, June C-Y. Lo, Nayantara Santhi, Alpar S. Lazar, Derk-Jan Dijk
Summary: Laboratory-based studies have shown that sleep restriction or deprivation can lead to a decrease in positive affect, worsening mood, and an increase in hostility. Mood changes can also occur when individuals sleep during atypical circadian phases. These findings highlight the importance of sleep in regulating emotions and suggest that mood changes systematically as sleep is shortened or mistimed.
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
(2022)
Article
Clinical Neurology
Courtney E. Casale, Erika M. Yamazaki, Tess E. Brieva, Caroline A. Antler, Namni Goel
Summary: This study aimed to compare different methods for defining resilience and vulnerability based on subjective metrics. The results showed that only the Raw Score approach consistently distinguished Resilient and Vulnerable groups, while the other approaches differed in their categorizations. The study suggests using the Raw Score approach as an effective method for subjective resilience/vulnerability categorization.
Article
Nutrition & Dietetics
Andrew W. McHill, Joseph T. Hull, Elizabeth B. Klerman
Summary: Chronic circadian disruption and insufficient sleep are independently associated with poor health outcomes. This study found that chronic circadian disruption was associated with decreased hunger and appetite, and these changes were correlated with changes in the ghrelin/leptin ratio.
Article
Neurosciences
Terence L. Tyson, Erin E. Flynn-Evans, Leland S. Stone
Summary: This study aims to investigate the effects of acute and chronic sleep loss, low-dose alcohol, and caffeine on saccade-pursuit coordination. The results show that low-dose alcohol and acute sleep loss have different effects on compensating for tracking deficits, while chronic sleep loss and caffeine-mitigated acute sleep loss show smaller pursuit deficits but remain altered in saccadic behavior.
FRONTIERS IN NEUROSCIENCE
(2023)
Review
Sport Sciences
Omar Boukhris, Khaled Trabelsi, Haresh Suppiah, Achraf Ammar, Cain C. T. Clark, Haitham Jahrami, Hamdi Chtourou, Matthew Driller
Summary: This study conducted a systematic review and meta-analysis to evaluate the effect of daytime napping following normal night-time sleep on physical performance in physically active individuals and athletes. The findings indicated that napping after normal sleep improved performance in the 5-m shuttle run test, but had no significant effect on muscle force. Limited evidence was available for other physical performance measures.
Article
Clinical Neurology
Francisco G. Vital-Lopez, Thomas J. Balkin, Jaques Reifman
Summary: The study developed and validated mathematical models predicting sleep latency and duration, providing insights on the impact of small shifts in sleep onset timing on sleep duration. The models showed low prediction errors and can be applied to enhance performance, safety, and sustainability in civilian and military operations.
Article
Pharmacology & Pharmacy
Carolin F. Reichert, Simon Veitz, Miriam Buhler, Georg Gruber, Gunnar Deuring, Sophia S. Rehm, Katharina Rentsch, Corrado Garbazza, Martin Meyer, Helen Slawik, Yu-Shiuan Lin, Janine Weibel
Summary: The study found that caffeine can reduce subjective sleepiness but has individual variability in its effects on sleep. Particularly, teenagers with a higher need for deep sleep may experience a loss of slow-wave sleep at night.
BIOCHEMICAL PHARMACOLOGY
(2021)
Article
Multidisciplinary Sciences
Reto Huber, Arko Ghosh
Summary: The study found that cognitive and physical activities are dominated by diurnal and infra-radian rhythms, but cognitive performance has a weaker rhythm than physical activity. Before bedtime, people continue to interact with their smartphones while at physical rest, leading to a decline in cognitive performance.
Article
Biology
Rebecca C. C. Cox, Hannah K. K. Ritchie, Oliver A. A. Knauer, Molly K. K. Guerin, Ellen R. R. Stothard, Kenneth P. P. Wright Jr
Summary: Prior research has shown that sleep restriction, sleep deprivation, and circadian misalignment decrease positive affect, but their effects on negative affect are inconsistent. Chronotype, or an individual's sleep type, may influence one's affective response to these conditions. Later chronotypes have generally been found to have higher negative affect and lower positive affect under normal sleep conditions, but the effect of chronotype on affective responses to sleep restriction and sleep deprivation is mixed. This study examined the impact of chronotype on positive and negative affect during sleep restriction and subsequent total sleep deprivation. The results showed that later chronotypes were more susceptible to increased negative affect during sleep loss, and the effect of chronotype on positive affect varied depending on the measure used. These findings suggest that later chronotypes are more vulnerable to emotional impairments during sleep loss and circadian misalignment, even when the chronotype is not extremely late.
JOURNAL OF BIOLOGICAL RHYTHMS
(2023)
Article
Clinical Neurology
Jennifer R. Goldschmied, Elaine Boland, Emma Palermo, Holly Barilla, David F. Dinges, John A. Detre, Mathias Basner, Yvette I. Sheline, Hengyi Rao, Philip Gehrman
Summary: A recent meta-analysis has shown that sleep deprivation can rapidly improve depressive symptoms in approximately 50% of individuals with major depressive disorder (MDD), but most of these studies were conducted in clinical settings. This study investigated the effects of sleep deprivation using a highly controlled experimental approach.
JOURNAL OF AFFECTIVE DISORDERS
(2023)