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Chronotype, circadian rhythms and mood
Current Opinion in Psychology, 2020 Growing evidence shows a link between mood and chronotype. The majority of studies measure chronotype as a preference for morning/evening activities, rather than actual sleep behaviour (i.e. midsleep) or biological markers of sleep timing (e.g. dim light melatonin onset).
Serena, Bauducco +2 more
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Influence of Nocturnal Asthma on Chronotype
Journal of Asthma, 2008 Individual differences in circadian rhythm have been studied since the past century. Chronotypes are a chronobiology classification based on the preferential times for beginning and ending activities throughout the day. Chronotypes can be classified as definitely morning, moderately morning, indifferent, moderately evening, and definitely evening.
Erica, Ferraz +2 more
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Depressive symptomatology is influenced by chronotypes
Journal of Affective Disorders, 2009Rhythm disturbances are a frequent clinical manifestation of depression. In recent years a possible relationship between depression and chronotypes has emerged. Specifically eveningness has been proposed as vulnerability factor. The aim of this study was to describe sleep features of depressed patients according to chronotypes and to explore possible ...
Gaspar Barba E. +6 more
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Chronotype, sports and public health
Chronobiology International, 2015“Chronotype”, addressed in the Journal in 1997 (Tassi & Pins, 1997) and in 38 publications since 2014 (Broms et al., 2014; Erren & Morfeld, 2014; Laborde et al., 2015; Vitale et al., 2015) alone, i...
Liz, Kuffer +3 more
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Influence of chronotype on migraine characteristics
Neurological Sciences, 2019The aim of this study was to investigate chronotype in migraine patients and possible influences on the clinical expression of the disease.During a one-year period, all consecutive patients admitted to two third-level headache centres with a new diagnosis of migraine were enrolled in a cross-sectional study.
Viticchi, Giovanna +9 more
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Sleep and Chronotype for Children in Japan
Perceptual and Motor Skills, 1999To investigate the change in sleep-wake habits, Morningness-Eveningness preference, and sleep status by grade, 512 students aged from 6 to 18 years, were tested using the Morningness-Eveningness Questionnaire and Sleep Questionnaire. The habitual waking time showed no difference by grade, but the students above Grade 7 reported a significantly later ...
Y M, Park +3 more
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Is latitude associated with chronotype?
This thesis tested the hypothesis that latitude influences chronotype expression. Using data from 65,824 Brazilians based on the Munich ChronoType Questionnaire (MCTQ), the analysis revealed a negligible effect of latitude (Cohen’s f2 = 0.00314) on ...
Daniel Vartanian
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Nightmares Associated with the Eveningness Chronotype
Journal of Biological Rhythms, 2010Relations between common nightmares and chronobiological factors remain poorly understood. The possibility that nightmare frequency and distress are associated with chronotype (“morningness-eveningness”) was investigated in a sample of respondents to an Internet questionnaire. Over a 4½-year period, a total of 3978 subjects (mean age = 26.5 ± 11.6 yrs;
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Chronotypes and rhythm stability in mice
Chronobiology International, 2013Humans come in different chronotypes: The phase of their sleep-wake cycle with respect to the phase of the external, sidereal cycle of night and day differs. Colloquially, the early chronotypes are addressed as "larks," the late ones as "owls." The human chronotype can be quantified in hours and minutes of local time by determining the median of the ...
Helmut, Wicht +5 more
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