نتایج جستجو برای: chronotype

تعداد نتایج: 631  

Journal: :Chronobiology international 2012
Marina Lehmann Kamiel Spoelstra Marcel E Visser Barbara Helm

Daily schedules of many organisms, including birds, are thought to affect fitness. Timing in birds is based on circadian clocks that have a heritable period length, but fitness consequences for individuals in natural environments depend on the scheduling of entrained clocks. This chronotype, i.e., timing of an individual relative to a zeitgeber, results from interactions between the endogenous ...

Journal: :Journal of biological rhythms 2010
Tore Nielsen

Relations 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 4(1/2)-year period, a total of 3978 subjects (mean age = 26.5 +/- 11.6 yrs; age range = 10-69; 2933 female, 1045...

2011
Karen L. Gamble Alison A. Motsinger-Reif Akiko Hida Hugo M. Borsetti Stein V. Servick Christopher M. Ciarleglio Sam Robbins Jennifer Hicks Krista Carver Nalo Hamilton Nancy Wells Marshall L. Summar Douglas G. McMahon Carl Hirschie Johnson

BACKGROUND Daily cycles of sleep/wake, hormones, and physiological processes are often misaligned with behavioral patterns during shift work, leading to an increased risk of developing cardiovascular/metabolic/gastrointestinal disorders, some types of cancer, and mental disorders including depression and anxiety. It is unclear how sleep timing, chronotype, and circadian clock gene variation con...

Journal: :Current Sleep Medicine Reports 2015

Journal: :Current Sleep Medicine Reports 2018

Journal: :Journal of Biological Rhythms 2012

Journal: : 2022

Background: Sleep disorders during pregnancy pose a real threat to the mother and fetus due violation of physiological course gestation process, release melatonin (central peripheral). The aim study:Comparative evaluation sleep chronotype indicators in healthy pregnant non-pregnant women. Materials methods: There was conducted voluntary survey 210 relatively girls (medical students), average ag...

Journal: :Chronobiology international 2015
Juan Francisco Díaz-Morales Cristina Escribano Konrad S Jankowski

Existing evidence suggests an association between mood, time-of-day and morningness-eveningness (M-E). Since few studies have been carried out among adolescents, in this study daily mood fluctuations were analyzed in the naturalistic school context during 2 d in order to test how chronotype and time-of-day are related to mood during the school schedule period and check if sleep length is involv...

Journal: :The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2016
Emily Harbard Nicholas B Allen John Trinder Bei Bei

PURPOSE Technology-related behaviors (e.g., computer use) before bedtime (BT) have been associated with poorer and shorter sleep in adolescents; however, less is known about other behaviors in relation to sleep. This study characterized a range of behaviors in the hour before bed (i.e., pre-BT behaviors [PBBs]) and examined their relationship with sleep parameters during school and vacation per...

2015
Hallie Kendis Kelly Baron Stephan U. Schuele Bhavita Patel Hrayr Attarian

Circadian rhythms govern all biological functions. Circadian misalignment has a major impact on health. Late chronotype is a risk factor for circadian misalignment which in turn can affect the control of seizures in epilepsy patients. We compared a group of 87 confirmed epilepsy patients regardless of subtypes with age- and sex-matched healthy controls. We compared generalized epilepsy patients...

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