Carolyn B Swope, Shengliang Rong, Carolina Campanella, Regina Vaicekonyte, Andrew Jk Phillips, Sean W Cain, Elise M McGlashan
Light is the main environmental signal synchronizing circadian rhythms to the 24-hour light-dark cycle. Recent research has identified significant inter-individual variability in the sensitivity of the circadian system to light as measured by, among other indicators, melatonin suppression in response to light. These inter-individual differences in light sensitivity could result in differential vulnerability to circadian disruption and related impacts on health. A growing body of experimental evidence points to specific factors which are associated with variability in the melatonin suppression response; however, no review to date has summarized this research to present a comprehensive summary of current knowledge...
March 23, 2023: Chronobiology International
Janet L Barnes-Farrell, Rick A Laguerre, Lee V Di Milia
The last several decades of shift work tolerance and circadian misalignment research has had mixed results regarding the adverse impact of shift work on work and health outcomes. This inconsistency is, in part, due to the circadian typology measure employed and the study methodology. Based on models of shift work and health, the present study examined associations between circadian misalignment, end-of-day strain, and job- and health-related outcomes using the revised Preferences Scale (PS-6). A sample of 129 healthcare workers (76...
March 21, 2023: Chronobiology International
Franziska Ryser, Roger Gassert, Esther Werth, Olivier Lambercy
The knowledge of the distribution of sleep and wake over a 24-h day is essential for a comprehensive image of sleep-wake rhythms. Current sleep-wake scoring algorithms for wrist-worn actigraphy suffer from low specificities, which leads to an underestimation of the time staying awake. The goal of this study ( Identifier: NCT03356938) was to develop a sleep-wake classifier with increased specificity. By artificially balancing the training dataset to contain as much wake as sleep epochs from day- and nighttime measurements from 12 subjects, we optimized the classification parameters to an optimal trade-off between sensitivity and specificity...
March 20, 2023: Chronobiology International
Yingkai Xu, Baoli Zhang, Changyue Yu, Ziwei Hung, Nan Hu, Yuqiao Cai, Yingdong Li
Feeding rhythms affect a range of physiological functions in crustaceans. To investigate their effect on the physiological functions of Eriocheir sinensis , herein, we analyzed the influence of different feeding times on the hepatopancreas transcriptome via high-throughput sequencing. We harvested the hepatopancreas of crabs at 12:00 on day 11 of the experiment. We weighted the crabs before and after the experiment and found that those in the 06:00 group had the highest weight gain rate. In addition, 512 differentially expressed genes (DEGs) were grouped into nine distinct clusters...
March 17, 2023: Chronobiology International
Richard Carciofo
The construct of Morning Affect (MA; alertness upon awakening/time required to feel fully awake) emerged from exploratory factor analysis of morningness-eveningness questionnaires, and while it has been equated with morningness-eveningness preference it has much conceptual overlap with sleep inertia (SI; the transitional state between sleep and being fully awake). The current study compared questionnaire measures of these constructs to help clarify their inter-relationships. A volunteer sample of 453 students at an English-medium university in China completed an online survey including the Sleep Inertia Questionnaire (SIQ), the Morningness-Eveningness-Stability-Scale-improved (MESSi), with subscales for MA, Eveningness, and Distinctness (amplitude of diurnal variation), and the reduced Morningness-Eveningness Questionnaire (rMEQ)...
March 13, 2023: Chronobiology International
Justyna M Olszewska, Amy E Hodel, Anna Ceglarek, Magdalena Fafrowicz
The main objective of the current study was to investigate the effect of time of day on visual and auditory, short-term memory (STM), and long-term memory (LTM) distortions using a hybrid Deese-Roediger-McDermott procedure. In Experiment 1, we used semantically related words, whereas in Experiment 2 - words were characterized by phonological similarity. The results showed a relationship between modality and types of stimuli. In STM, more semantic errors were found in the evening for items presented visually and more errors following auditory presentation for phonologically similar words...
March 13, 2023: Chronobiology International
Patrick B Schwartz, Morgan T Walcheck, Manabu Nukaya, Derek M Pavelec, Kristina A Matkowskyj, Sean M Ronnekleiv-Kelly
Misalignment of the circadian clock compared to environmental cues causes circadian desynchrony, which is pervasive in humans. Clock misalignment can lead to various pathologies including obesity and diabetes, both of which are associated with pancreatic ductal adenocarcinoma - a devastating cancer with an 80% five-year mortality rate. Although circadian desynchrony is associated with an increased risk of several solid-organ cancers, the correlation between clock misalignment and pancreas cancer is unclear...
March 13, 2023: Chronobiology International
Ying Wang, Jia-Qian Li, Wan-Min Qiang, Shu-Rui Wang, Ao-Mei Shen, Chen-Xi Xi, Huan Liu
The objective of this scoping review was to synthesize the available evidence and evaluate the effectiveness of chronoradiotherapy interventions in cervical cancer patients. This scoping review was performed by searching in the PubMed, Cochrane Library, Embase, Web of Science, Scopus, Cumulative Index to Nursing and Allied Health Literature (CINAHL), China National Knowledge Infrastructure (CNKI), Wanfang, Wenpu, and Chinese Biomedical Literature (CBM) databases. Databases were searched for studies published in English or Chinese from inception to 21 May 2021, and reference lists of relevant reports were scanned...
March 13, 2023: Chronobiology International
Natália de Carvalho Cordeiro Lira, Samara Medeiros de Araújo, Anna Cecília Queiroz de Medeiros, Jane Carla de Souza
Chrononutrition is a science that studies the relationship between mealtimes and sleep/wake habits. However, these behaviors are not evaluated by a single questionnaire. Therefore, this study aimed to translate and culturally adapt the Chrononutrition Profile - Questionnaire (CP-Q) into Portuguese and validate the Brazilian version. The translation and cultural adaptation process consisted of: translation; synthesis of translations; backtranslation; expert committee and pre-test. The validation was performed with 635 participants (32...
March 8, 2023: Chronobiology International
Tommaso D'orsogna, Shona L Halson, Raoul Oehmen
Sleep is inexorably linked to both physiological and psychological wellbeing. Restrictions imposed to control the COVID-19 pandemic likely impacted upon daily and weekly routines, which can have a negative impact on a range of factors including sleep quality, and/or quantity and general wellbeing. The aim of this study was to investigate the effect of COVID-19 related restrictions on sleep patterns and psychological wellbeing of healthcare students. A survey was delivered to healthcare students across three faculties at a single institution...
March 8, 2023: Chronobiology International
Satvinder Kaur, Choon Ming Ng, Shu Ying Tang, Ee Yin Kok
This study aimed to examine the association between chronotype, eating jetlag, and eating misalignment with weight status among Malaysian adults during the COVID-19 restriction. This online cross-sectional study included 175 working adults recruited from March to July 2020. The chronotype was assessed using Morningness Eveningness Questionnaire (MEQ) while eating jetlag and mealtime variability were measured using Chrononutrition Profile Questionnaire (CPQ). Multiple linear regression demonstrated that lower breakfast frequency (β=-0...
March 8, 2023: Chronobiology International
Jeongwon Yeom, Insun Yeom
The mediating role of fatigue in the relationship between the quality of sleep and quality of life of shift-working nurses has been predicted in previous studies. Interventions that focus on improving the quality of life of a nurse, who works 24 h shifts in close proximity to patients, should take the mediating role of fatigue into account. This study investigates the mediation of fatigue in the relationship between sleep quality and quality of life for shift-working nurses. This cross sectional study collected self-reported questionnaire responses on variables including sleep quality, quality of life, and fatigue of shift-working nurses...
March 2, 2023: Chronobiology International
Vojkan Aleksic, Marija Milic, Biljana Jeremic, Milos Gasic, Jelena Dotlic, Jasmina Stevanovic, Aleksandra Arsovic, Tatjana Gazibara
The intake of food later in the evening can have harmful health consequences. Some researchers suggest that having certain personality characteristics may be associated with the onset of eating disorders. There is a lack of studies on personality traits and night eating in a complex socio-political setting. The purpose of this study was to examine the association between personality traits and more intense night eating among students in northern Kosovo. A cross-section study was conducted in a population of health science students at the University in Kosovska Mitrovica...
March 1, 2023: Chronobiology International
Jens Heyn, Isabel Kiesewetter, Birgit Uenze, Ricarda Christoph, Nannette Baumann, Lorenz Mihatsch, Benjamin Luchting
Multidisciplinary pain treatment programs (MPTP) have been considered to be the most effective treatment of chronic pain. In this study, we analyzed the influence of seasons on the outcome of chronic pain patients undergoing MPTP. Therefore, a prospective, observational trial was conducted in patients with chronic pain undergoing a 5-week interdisciplinary treatment program. Psychological stabilization (measured by ADS - Allgemeine Depressionsskala) and pain levels (measured by NRS - numeric rating scale) were considered as primary endpoints...
February 28, 2023: Chronobiology International
Heng Li, Bo Yang
Considerable evidence shows that nocturnal chronotypes have increased odds of mental health problems, poor academic performance, and impairment in executive functions. Although the cognitive and health costs of evening-oriented preference are well-documented in the literature, little is known about its interpersonal costs. In this article, we propose that people with a preference for an evening chronotype show a lower tendency to forgive following an interpersonal offense because of their lower self-control ability...
February 27, 2023: Chronobiology International
Julia Ribeiro da Silva Vallim, Gabriela Sant'Ana Lima, Heloisa Mayumi Suyama Tsuji, Beatriz Duarte Palma Xylaras, Sergio Tufik, Marcelo Demarzo, Vânia D'Almeida
Undergraduate students are usually subjected to a routine with constant pressure, stress, circadian misalignment, and sleep irregularity that impairs their subjective well-being. Recent evidence suggests that circadian preference is also a risk factor for impaired mental health and factors related to subjective well-being. This study aimed to identify the sociodemographic factors associated with subjective well-being and describe the mediating behavioral variables. Between September 2018 and March 2021, 615 Brazilian students enrolled in higher educational institutions completed an electronic form containing questionnaires on subjective well-being, sociodemographic, and behavioral-related factors (convenience sample)...
February 21, 2023: Chronobiology International
F H Mazri, Z A Manaf, S Shahar, A F Mat Ludin, N A Karim
Previously we had demonstrated the development and feasibility of an integrated chrono-nutrition weight reduction program among non-shift workers with morning and evening chronotypes. In this current paper, we described the association between the changes in chrono-nutrition practice and weight loss outcomes upon completing the weight reduction program. A total of 91 overweight/obese non-shift workers participated in the 12-week integrated chrono-nutrition weight reduction program (Age: 39.6 ± 6...
February 20, 2023: Chronobiology International
Seçil Ekiz Erim, Havva Sert
Referring to the hours during a day when a person's physical and cognitive functions are active, the chronotype indicates the differences in individual preferences in sleep timing and other behaviors. The fact that the evening chronotype has been associated with adverse health outcomes has raised the issue of relationship between chronotype and obesity. This study aims to synthesize the evidence regarding the relationship between chronotype and obesity. As part of the study, the PubMed, OVID-LWW, Scopus, Taylor & Francis, ScienceDirect, MEDLINE Complete, Cochrane Library and ULAKBIM databases were screened for the articles published between January 01, 2010 and December 31, 2020...
February 20, 2023: Chronobiology International
Riko Kuwano, Maki Katsura, Mai Iwata, Tatsuya Yokosako, Taishi Yoshii
Animals possess a circadian central clock in the brain, where circadian behavioural rhythms are generated. In the fruit fly ( Drosophila melanogaster ), the central clock comprises a network of approximately 150 clock neurons, which is important for the maintenance of a coherent and robust rhythm. Several neuropeptides involved in the network have been identified, including Pigment-dispersing factor (PDF) and CCHamide1 (CCHa1) neuropeptides. PDF signals bidirectionally to CCHa1-positive clock neurons; thus, the clock neuron groups expressing PDF and CCHa1 interact reciprocally...
February 14, 2023: Chronobiology International
Maria Gabriela Tavares Amaro, Ricardo Abdala Conde de Almeida, Bruno Marques Donalonso, Alessandra Mazzo, Carlos Antonio Negrato
Epidemiological evidence show that shift work can contribute to increased body weight. This study aims to map the prevalence of obesity and overweight among health professionals who work in shifts and analyse the factors that contribute to weight gain. A scoping review was conducted, following the proposal of the Joanna Briggs Institute. The Population, Concept, and Context strategy was used to formulate the guiding question. The proposed question was: "What is the prevalence of overweight and obesity among health professionals with shift work schedules?" After excluding duplicate articles, analysing titles and abstracts, and excluding articles that did not answer the guiding question, 20 articles remained and were included in this review...
February 8, 2023: Chronobiology International
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