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Chronotype

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https://www.readbyqxmd.com/read/28329091/association-between-sleep-timing-obesity-diabetes-the-hispanic-community-health-study-study-of-latinos-hchs-sol-cohort-study-sleep-timing-obesity-and-diabetes
#1
Kristen L Knutson, Donghong Wu, Sanjay R Patel, Jose S Loredo, Susan Redline, Jianwen Cai, Linda C Gallo, Yasmin Mossavar-Rahmani, Alberto R Ramos, Yanping Teng, Martha L Daviglus, Phyllis C Zee
Study Objectives: Recent studies implicate inadequate sleep duration and quality in metabolic disease. Fewer studies have examined the timing of sleep, which may be important because of its potential impact on circadian rhythms of metabolic function. We examined the association between sleep timing and metabolic risk among Hispanic/Latino adults. Methods.: Cross-sectional data from community-based study of 13,429 participants aged 18-74 years. People taking diabetes medications were excluded...
January 28, 2017: Sleep
https://www.readbyqxmd.com/read/28329056/chronotype-not-associated-with-non-remission-but-with-current-state
#2
S E Knapen, S J M Druiven, Y Meesters, H Riese
No abstract text is available yet for this article.
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28321642/circadian-rhythm-dysregulation-in-bipolar-spectrum-disorders
#3
REVIEW
Lauren B Alloy, Tommy H Ng, Madison K Titone, Elaine M Boland
PURPOSE OF REVIEW: We review recent evidence for circadian rhythm dysregulation in bipolar spectrum disorders (BSDs). We examine evidence for endogenous abnormalities in the biological clock and disruptions in the external entrainment of circadian rhythms in BSDs. We also address whether circadian dysregulation provides vulnerability to onset of BSD and evidence for a new integration of reward and circadian dysregulation in BSD. RECENT FINDINGS: Relative circadian phase delay (e...
April 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28314054/a-cross-sectional-survey-of-the-nature-and-correlates-of-sleep-disturbance-in-people-with-psoriasis
#4
A L Henry, S D Kyle, A Chisholm, C E M Griffiths, C Bundy
BACKGROUND: Research suggests that sleep disturbance is common in psoriasis. Despite 32 studies conducted in sleep, many demonstrate methodological flaws, often using unvalidated measurement, with no study examining multiple dimensions of sleep-wake functioning. Moreover, research has yet to comprehensively examine the range of physical and psychological factors that may affect sleep in people with psoriasis. OBJECTIVE: To characterise sleep disturbance using validated measures and identify physical and psychological predictors of sleep quality in people with psoriasis...
March 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28282237/associations-of-common-noncommunicable-medical-conditions-and-chronic-diseases-with-chronotype-in-a-population-based-health-examination-study
#5
Syaron Basnet, Ilona Merikanto, Tuuli Lahti, Satu Männistö, Tiina Laatikainen, Erkki Vartiainen, Timo Partonen
Chronotype is an emerging predictor of health and longevity, and understanding its influence on chronic diseases is important for constructing conceptual models of long-term pathways to health. We assessed the associations of chronotype with health status in the general Finnish adult population. Our population-based data were derived from the National FINRISK 2012 study and consisted of 4414 participants, aged 25-74 years, living in Finland. As part of their health examination, participants were asked about their circadian preference to the daily activities (morningness-eveningness) and a diagnosis or treatment for a set of common noncommunicable medical conditions and chronic diseases during the past 12 months...
March 10, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28276851/predicting-the-actigraphy-based-acrophase-using-the-morningness-eveningness-questionnaire-meq-in-college-students-of-north-italy
#6
Eliana Roveda, Jacopo Vitale, Angela Montaruli, Letizia Galasso, Franca Carandente, Andrea Caumo
Actigraphy is the reference objective method to measure circadian rhythmicity. One simpler subjective approach to assess the circadian typology is the Morningness-Eveningness Questionnaire (MEQ) by Horne and Ostberg. In this study, we compared the MEQ score against the actigraphy-based circadian parameters MESOR, amplitude and acrophase in a sample of 54 students of the University of Milan in Northern Italy. MEQ and the acrophase resulted strongly and inversely associated (r = -0.84, p < 0.0001), and their relationship exhibited a clear-cut linear trend...
February 21, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28276850/associations-between-period-3-gene-polymorphisms-and-sleep-chronotype-related-variables-in-patients-with-late-life-insomnia
#7
Hader A Mansour, Joel Wood, Kodavali V Chowdari, Divya Tumuluru, Mikhil Bamne, Timothy H Monk, Martica H Hall, Daniel J Buysse, Vishwajit L Nimgaonkar
A variable number tandem repeat polymorphism (VNTR) in the period 3 (PER3) gene has been associated with heritable sleep and circadian variables, including self-rated chronotypes, polysomnographic (PSG) variables, insomnia and circadian sleep-wake disorders. This report describes novel molecular and clinical analyses of PER3 VNTR polymorphisms to better define their functional consequences. As the PER3 VNTR is located in the exonic (protein coding) region of PER3, we initially investigated whether both alleles (variants) are transcribed into messenger RNA in human fibroblasts...
February 27, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28272914/chronotype-class-times-and-academic-achievement-of-university-students
#8
Tristan Enright, Roberto Refinetti
Numerous studies over the years have documented an effect of human chronotypes on physiological and psychological processes. Studies evaluating the impact of an individual's chronotype on his/her academic achievement have indicated that morning chronotypes have an academic advantage over evening chronotypes. However, these studies did not account for the time of day in which the participants were being evaluated. The goal of the present study was to examine whether morning chronotypes do have an academic advantage over evening chronotypes when the time of day of classes and exams is taken into consideration...
March 8, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28267366/eveningness-associates-with-smoking-and-sleep-problems-among-pregnant-women
#9
Ilona Merikanto, E Juulia Paavonen, Outi Saarenpää-Heikkilä, Tiina Paunio, Timo Partonen
Sleep problems during pregnancy impair maternal health and increase the risk for adverse pregnancy outcome. The circadian preference toward eveningness has been associated with sleep problems in previous studies. Here, we studied whether evening-type women had more sleep problems during their pregnancy, as compared with other chronotypes, in a sample consisting of 1653 pregnant women from the Finnish CHILD-SLEEP Birth Cohort. Chronotype was assessed with a shortened version of the morningness-eveningness questionnaire...
March 7, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28257037/the-role-of-the-melatoninergic-system-in-light-entrained-behavior-of-mice
#10
Martina Pfeffer, Horst-Werner Korf, Helmut Wicht
The role of endogenous melatonin for the control of the circadian system under entrained conditions and for the determination of the chronotype is still poorly understood. Mice with deletions in the melatoninergic system (melatonin deficiency or the lack of melatonin receptors, respectively) do not display any obvious defects in either their spontaneous (circadian) or entrained (diurnal) rhythmic behavior. However, there are effects that can be detected by analyzing the periodicity of the locomotor behaviors in some detail...
March 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28251931/sleep-characteristics-modify-the-association-of-genetic-predisposition-with-obesity-and-anthropometric-measurements-in-119-679-uk-biobank-participants
#11
Carlos Celis-Morales, Donald M Lyall, Yibing Guo, Lewis Steell, Daniel Llanas, Joey Ward, Daniel F Mackay, Stephany M Biello, Mark Es Bailey, Jill P Pell, Jason Mr Gill
Background: Obesity is a multifactorial condition influenced by genetics, lifestyle, and environment.Objective: We investigated whether the association of a validated genetic profile risk score for obesity (GPRS-obesity) with body mass index (BMI) and waist circumference (WC) was modified by sleep characteristics.Design: This study included cross-sectional data from 119,859 white European adults, aged 37-73 y, participating in the UK Biobank. Interactions of GPRS-obesity and sleep characteristics (sleep duration, chronotype, day napping, and shift work) with their effects on BMI and WC were investigated...
March 1, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28229553/chronotype-differences-in-timing-of-energy-and-macronutrient-intakes-a-population-based-study-in-adults
#12
Mirkka Maukonen, Noora Kanerva, Timo Partonen, Erkki Kronholm, Heli Tapanainen, Jukka Kontto, Satu Männistö
OBJECTIVE: To examine the association between chronotype and timing of energy and macronutrient intakes in adults. METHODS: The study sample included 1,854 participants from the National FINRISK 2007 and FINDIET 2007 studies, aged 25 to 74 years. Diet was assessed with 48-hour dietary recalls. Chronotype was assessed with a shortened version of Horne and Östberg's Morningness-eveningness Questionnaire. Associations between chronotype and intakes of energy and macronutrients in the morning (by 10 am) and in the evening (after 8 pm) were analyzed with linear regression and ANOVA followed by Bonferroni post hoc test...
March 2017: Obesity
https://www.readbyqxmd.com/read/28219731/time-place-learning-and-activity-profile-under-constant-light-and-constant-dark-in-zebrafish-danio-rerio
#13
Clarissa de Almeida Moura, Jéssica Polyana da Silva Lima, Vanessa Augusta Magalhães Silveira, Mário André Leocadio Miguel, Ana Carolina Luchiari
The ability to learn about the signs of variability in space and time is known as time place learning (TPL). To adjust their circadian rhythms, animals use stimuli that change regularly, such as the light-dark cycle, temperature, food availability or even social stimuli. Because light-dark cycle is the most important environmental temporal cue, we asked how a diurnal animal would perform TPL if this cue was removed. Zebrafish has been extensively studied in the chronobiology area due to it diurnal chronotype, thus, we studied the effects of constant light and constant dark on the time-place learning and activity profile in zebrafish...
February 20, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28215256/the-association-between-chronotype-and-sleep-problems-in-preschool-children
#14
Nur K Jafar, Elaine K H Tham, Derric Z H Eng, Daniel Y T Goh, Oon-Hoe Teoh, Yung S Lee, Lynette Pei-Chi Shek, Fabian Yap, Yap Seng Chong, Michael J Meaney, Joshua J Gooley, Birit F P Broekman
OBJECTIVE: Adolescents and adults who are evening-types exhibit shorter sleep duration and more sleep problems than individuals with an earlier chronotype. We hypothesized that already at a preschool age, evening-types would exhibit more sleep problems relative to children who are morning or intermediate chronotypes. The aim of this study was to examine the association between chronotype and sleep problems among preschool children. METHODS: We studied a subset of typically-developing 4...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28202701/chronobiology-differs-between-men-and-women-with-cluster-headache-clinical-phenotype-does-not
#15
Nunu Lund, Mads Barloese, Anja Petersen, Bryan Haddock, Rigmor Jensen
OBJECTIVE: To describe differences between the sexes in the phenotype of cluster headache (CH) in a large, well-characterized clinical CH population. METHODS: Patients from the Danish CH survey aged 18-65 years, diagnosed with CH according to International Classification of Headache Disorders, second edition, completed questionnaires and structured interviews. RESULTS: A total of 351 patients with CH participated, with a male:female ratio of 2:1...
March 14, 2017: Neurology
https://www.readbyqxmd.com/read/28189081/relationship-between-chronotype-and-temperament-character-among-university-students
#16
Kounseok Lee, Hye-Kyung Lee, Kyungun Jhung, Jin Young Park
Chronotype is largely classified as being morning or evening types according to preference for daily activity and the preferred bedtime. This study examined the relationship between chronotype and temperament/character dimensions among university students. A total of 2857 participants completed the 140-item Temperament and Character Inventory-Revised Short version (TCI-RS) from a 5-score scale as well as the 13-item composite scale for morningness-eveningness (CSM). In this study, we classified chronotype as "morning," "neither," or "evening" types according to CSM scores and compared the scores in terms of 4 temperament dimensions and 3 character dimensions...
May 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28128995/later-chronotype-is-associated-with-higher-hemoglobin-a1c-in-prediabetes-patients
#17
Thunyarat Anothaisintawee, Dumrongrat Lertrattananon, Sangsulee Thamakaison, Kristen L Knutson, Ammarin Thakkinstian, Sirimon Reutrakul
The circadian system is known to play a role in glucose metabolism. Chronotype reflects the interindividual variability in the phase of entrainment. Those with later chronotype typically prefer later times in the day for different activities such as sleep or meals. Later chronotype has been shown to be associated with metabolic syndrome, increased diabetes risk and poorer glycemic control in type 2 diabetes patients. In addition, "social jetlag", a form of circadian misalignment due to a mismatch between social rhythms and the circadian clock, has been shown to be associated with insulin resistance...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28128994/owls-larks-swifts-woodcocks-and-they-are-not-alone-a-historical-review-of-methodology-for-multidimensional-self-assessment-of-individual-differences-in-sleep-wake-pattern
#18
Arcady A Putilov
Differences between the so-called larks and owls representing the opposite poles of morningness-eveningness dimension are widely known. However, scientific consensus has not yet been reached on the methodology for ranking and typing people along other dimensions of individual variation in their sleep-wake pattern. This review focused on the history and state-of-the-art of the methodology for self-assessment of individual differences in more than one trait or adaptability of the human sleep-wake cycle. The differences between this and other methodologies for the self-assessment of trait- and state-like variation in the perceived characteristics of daily rhythms were discussed and the critical issues that remained to be addressed in future studies were highlighted...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28107042/association-between-depressive-symptoms-and-morningness-eveningness-sleep-duration-and-rotating-shift-work-in-japanese-nurses
#19
Fumiharu Togo, Takahiro Yoshizaki, Taiki Komatsu
Higher depressive symptoms have been reported in rotating shift workers compared with day workers. Depressive symptoms in adults who do not engage in night work have also been shown to be associated with chronotype and sleep duration. This study examines associations between depressive symptoms, morningness-eveningness (i.e. the degree to which people prefer to be active in the morning or the evening), sleep duration and rotating shift work. Japanese nurses (1252 day workers and 1780 rotating shift workers, aged 20-59) were studied using a self-administered questionnaire...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28076650/chronotype-and-anxiety-are-associated-in-patients-with-chronic-primary-insomnia
#20
Giselle S Passos, Marcos G Santana, Dalva Poyares, Carolina V D'Aurea, Alexandre A Teixeira, Sergio Tufik, Marco T de Mello
Objective: To assess the interaction of chronotype with anxiety in patients with chronic primary insomnia. Methods: Sixty-four patients (50 women) with mean age 43.9±8.1 years were investigated with the Horne and Östberg Morningness-Eveningness Questionnaire (MEQ) and State-Trait Anxiety Inventory (STAI). Results: Significant negative correlations of chronotype-MEQ score with STAI state-anxiety (r = -0.40, p < 0.05), STAI trait-anxiety (r = -0...
January 9, 2017: Revista Brasileira de Psiquiatria
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