Factors associated with excessive daytime sleepiness among Brazilian adolescents.

abstract：:Rhythms in the mammalian pineal organ depend on afferent information that is derived from the endogenous clock residing in the hypothalamic suprachiasmatic nucleus (SCN). The best characterized function of the pineal gland is the nocturnally elevated synthesis of the hormone melatonin, which provides the body with the...

journal_title：Chronobiology international

authors： Ackermann K,Stehle JH

更新日期：2006-01-01 00:00:00

abstract：:Various processes associated with mammalian reproduction exhibit circadian rhythms, yet no information is available concerning the presence of rhythmicity in meiosis-the crucial process of the production of sex cells. Following meiosis in cells derived from male mice exposed in vivo to daily light-dark cycles (LD), we...

journal_title：Chronobiology international

authors： Rienstein S,Dotan A,Avivi L,Ashkenazi I

更新日期：1998-01-01 00:00:00

abstract：:The objective of this study was to determine in a significant temporal pattern exists in the presentation of sickle cell vaso-occlusive pain crisis (SC-VPC) patients to an emergency department (ED) for treatment. This 28-month retrospective study of ED sickle cell crisis treatment involved 1128 presumably diurnally ac...

journal_title：Chronobiology international

authors： Auvil-Novak SE,Novak RD,el Sanadi N

更新日期：1996-12-01 00:00:00

abstract：:Animal and human studies demonstrate anatomical and functional links between the vestibular nuclei and the circadian timing system. This promotes the hypothesis of a circadian rhythm of vestibular function. The objective of this study was to evaluate the vestibular function through the vestibulo-ocular reflex using a ...

journal_title：Chronobiology international

authors： Martin T,Zouabi A,Pasquier F,Denise P,Gauthier A,Quarck G

更新日期：2021-01-01 00:00:00

abstract：:Freshwater crayfish have three known photoreceptive systems: the compound eyes, extraretinal brain photoreceptors, and caudal photoreceptors. The primary goal of the work described here was to explore the contribution of the brain photoreceptors to circadian locomotory activity and define some of the underlying neural...

journal_title：Chronobiology international

authors： Sullivan JM,Genco MC,Marlow ED,Benton JL,Beltz BS,Sandeman DC

更新日期：2009-08-01 00:00:00

abstract：:A circadian rhythm of heart rate and respiratory rate was seen at 1, 8, and 12 months of age in an infant born without ocular tissue, which supports the possibility that the time cues were nonphotic. No melatonin circadian rhythm was detected at any age up to 9 years of age, and this is most likely associated with the...

journal_title：Chronobiology international

authors： Ardura J,Andres J,Aragon MP,Agapito T

更新日期：2004-03-01 00:00:00

abstract：:The pineal hormone melatonin is potentially useful in the treatment of disorders, especially sleep disorders, associated with circadian rhythm disturbance. We have examined its effects on sleep, mood, and behaviour in a double-blind, placebo-controlled study of a small group of police officers working spans of seven s...

journal_title：Chronobiology international

authors： Folkard S,Arendt J,Clark M

更新日期：1993-10-01 00:00:00

abstract：:Changes in rectal temperature during mild exercise in the middle of the rising (11:00 h) and falling (23:00 h) phases of the circadian rhythm of resting core temperature have been compared. Seven healthy males were studied at rest, while exercising on a cycle ergometer (60 min at 80 W), and during the first 30 min of ...

journal_title：Chronobiology international

authors： Waterhouse J,Aizawa S,Nevill A,Edwards B,Weinert D,Atkinson G,Reilly T

更新日期：2007-01-01 00:00:00

abstract：:Previous studies have reported sex differences in the pathophysiology of hypertension and responses to blood pressure (BP)-lowering medications. Moreover, men exhibit typically higher BP than women, the differences being greater for systolic (SBP) than diastolic (DBP) BP. These differences become apparent during adole...

journal_title：Chronobiology international

authors： Hermida RC,Ayala DE,Mojón A,Fontao MJ,Chayán L,Fernández JR

更新日期：2013-03-01 00:00:00

abstract：:Diurnal variation in muscle performance has been well documented in the past few years, but almost exclusively in the male population. The possible effects of the menstrual cycle on human circadian rhythms have remained equivocal, particularly in the context of muscle strength. The purpose of the study was to analyze ...

journal_title：Chronobiology international

authors： Bambaeichi E,Reilly T,Cable NT,Giacomoni M

更新日期：2004-07-01 00:00:00

abstract：:Predicting the future position of moving objects is an essential cognitive function used for many daily activities, such as driving, walking and reaching. The experiments described in this paper show a marked diurnal modulation of motion prediction in inflating image perception. This motion prediction was shown to be ...

journal_title：Chronobiology international

authors： Takao M,Miyajima H,Shinagawa T

更新日期：2015-01-01 00:00:00

abstract：:Diurnal and seasonal rhythms of cortisol, testosterone, and DHEA were examined, as little is known about the relationship between these rhythmicities and pubertal development. Salivary samples were obtained from 60 boys and 60 girls at approximately 07:45, 08:00, 08:30, 12:00, 16:50, and 21:00 h. The participants' age...

journal_title：Chronobiology international

authors： Matchock RL,Dorn LD,Susman EJ

更新日期：2007-01-01 00:00:00

abstract：:The 3111T/C single nucleotide polymorphism (SNP) of Circadian Locomotor Output Cycles Kaput (CLOCK) gene reportedly affects gastric motility before breakfast. It is of interest to know whether this SNP can affect the motility during the daytime. We investigated the association between the CLOCK 3111T/C SNP and several...

journal_title：Chronobiology international

authors： Yamaguchi M,Kotani K,Tsuzaki K,Motokubota N,Komai N,Sakane N,Moritani T,Nagai N

更新日期：2017-01-01 00:00:00

abstract：:Morningness-eveningness, or chronotype, reflects the timing of sleep-wake patterns across a 24-hour day. Extant research has revealed that chronotype correlates with numerous psychological constructs including cognitive ability. In the current research, we examined how people with different chronotypes perceive their ...

journal_title：Chronobiology international

authors： Zajenkowski M,Jankowski KS,Stolarski M

更新日期：2019-12-01 00:00:00

abstract：:In the laboratory rat, a number of physiological parameters display seasonal changes even under constant conditions of temperature, lighting, and food availability. Since there is evidence that prolactin (PRL) is, among the endocrine signals, a major mediator of seasonal adaptations, the authors aimed to examine wheth...

journal_title：Chronobiology international

authors： Jiménez-Ortega V,Barquilla PC,Pagano ES,Fernández-Mateos P,Esquifino AI,Cardinali DP

更新日期：2012-10-01 00:00:00

abstract：:It has been previously documented that aspirin induced gastric injury of healthy male volunteers was greater in the morning than in the evening. We have also reported that fasting gastric acid secretion rates and gastric retention times for solids were lower in the morning hours of the circadian cycle. We hypothesized...

journal_title：Chronobiology international

authors： Moore JG,Larsen KR,Goo RH,Bjorkman DJ

更新日期：1988-01-01 00:00:00

abstract：:Phase-response experiments using 1-h light pulses (LPs) of 1,100 lux applied under constant dim light of 0.3 lux were conducted with common marmosets, Callithrix j. jacchus, in order to obtain a complete phase-response curve established according to the common experimental procedure in a diurnal primate. Maximal phase...

journal_title：Chronobiology international

authors： Wechselberger E,Erkert HG

更新日期：1994-10-01 00:00:00

abstract：: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 individ...

journal_title：Chronobiology international

authors： Lehmann M,Spoelstra K,Visser ME,Helm B

更新日期：2012-10-01 00:00:00

abstract：:Current evidence suggests that acute depression is associated with reduced total hippocampal volume and regional atrophy. Here, using structural magnetic resonance imaging, we assayed linear effects of chronotype on total hippocampal volume and morphology. Later chronotype was associated with localised atrophy in the ...

journal_title：Chronobiology international

authors： Horne CM,Norbury R

更新日期：2018-07-01 00:00:00

abstract：:We ask if epidemiological studies into shift work and cancer may be prone to chronobiological errors. We illustrate how ignoring internal time (IT), or chronotype, may lead to what we call IT errors. Errors from truncating relevant external time (ET) information (activities start before and do not end with the shift) ...

journal_title：Chronobiology international

authors： Erren TC,Morfeld P

更新日期：2014-05-01 00:00:00

abstract：:The ventromedial hypothalamic nucleus (VMH) regulates various autonomic, endocrine, and behavioral activities. These activities show annual changes, and the pineal gland is involved in their adjustment to environmental cues. Therefore, this study investigated whether the VMH belongs to the effector structures of the p...

journal_title：Chronobiology international

authors： Peschke D,Teichmann J,Peschke E

更新日期：2000-01-01 00:00:00

abstract：:In mammals, non-visual responses to light involve intrinsically photosensitive melanopsin-expressing retinal ganglion cells (ipRGCs) that receive synaptic inputs from rod and cone photoreceptors. Several studies have shown that cones also play a role in light entrainment, photic responses of the suprachiasmatic nucleu...

journal_title：Chronobiology international

authors： Dollet A,Albrecht U,Cooper HM,Dkhissi-Benyahya O

更新日期：2010-06-01 00:00:00

abstract：:A delayed sleep-wake and circadian rhythm often occurs during puberty. While some individuals only develop a delayed sleep phase (DSP), others will fulfill the criteria for the diagnosis of delayed sleep phase disorder (DSPD). All previous studies have however not separated DSP from DSPD, and, as a result, the prevale...

journal_title：Chronobiology international

authors： Danielsson K,Markström A,Broman JE,von Knorring L,Jansson-Fröjmark M

更新日期：2016-01-01 00:00:00

abstract：:Chronotypes have been associated with psychopathology. The eveningness chronotype has been consistently linked with depressed states or depressive disorder, but the underlying mechanism remains unclear. Prior studies have shown associations between chronotype and personality traits that are linked to depression (e.g. ...

journal_title：Chronobiology international

authors： Antypa N,Verkuil B,Molendijk M,Schoevers R,Penninx BWJH,Van Der Does W

更新日期：2017-01-01 00:00:00

abstract：:Bone sarcomatous cells derived from human malignant tumors were cultured. The mitotic index was recorded for 39 hr. When the cultured cells originated from patients with cancer disease before any chemotherapy, ultradian mitotic rhythms of a 6-9-hr period were detected, but in many cases only after a sensitive statisti...

journal_title：Chronobiology international

authors： Petrovic A,Oudet C,Stutzmann J

更新日期：1989-01-01 00:00:00

abstract：:The organizing committee of the 2016 Rio Olympic Games recently announced that some of the preliminary and final competitions will be held at night. The present article discusses the potential harmful effects of these late-night competitions on sleep, circadian rhythms and athletic performance during the Olympic Games...

journal_title：Chronobiology international

authors： Rosa JP,Rodrigues DF,Silva A,de Moura Simim MA,Costa VT,Noce F,de Mello MT

更新日期：2016-01-01 00:00:00

abstract：:Postoperative delirium, a common perioperative complication, is frequently observed in elderly surgical patients. Few studies have investigated the life rhythm of preoperative patients, and whether or not the preoperative life rhythm is associated with the development of postoperative delirium. The purpose of this stu...

journal_title：Chronobiology international

authors： Tan C,Saito N,Miyawaki I,Shiotani H

更新日期：2020-07-01 00:00:00

abstract：:Our current 24-h society and the weekday-weekend switch of our social clocks may affect young children's sleep and circadian rhythms. However, such evidence is scarce. We conducted a nationwide epidemiological study of sleep and health in preschool children aged 3-5 years attending kindergarten or childcare centers in...

journal_title：Chronobiology international

authors： Doi Y,Ishihara K,Uchiyama M

更新日期：2016-01-01 00:00:00

abstract：:Concerns about health problems due to the increasing use of mobile phones are growing. Excessive use of mobile phones can affect the quality of sleep as one of the important issues in the health literature and general health of people. Therefore, this study investigated the relationship between the excessive use of mo...

journal_title：Chronobiology international

authors： Eyvazlou M,Zarei E,Rahimi A,Abazari M

更新日期：2016-01-01 00:00:00

abstract：:Equity is a humanitarian issue that gained strength during the transition from the 20th to the 21st century due to the mounting global discussion and social crisis involving human rights, health, and work. This article aims at (1) introducing the concept of equity as it applies to work environments, particularly to si...

journal_title：Chronobiology international

authors： Fischer FM,Rotenberg L,de Castro Moreno CR

更新日期：2004-01-01 00:00:00