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Aging chronotype

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https://www.readbyqxmd.com/read/29239697/who-is-sleepier-on-the-night-shift-the-influence-of-bio-psycho-social-factors-on-subjective-sleepiness-of-female-nurses-during-the-night-shift
#1
Nataly Zion, Anat Drach-Zahavy, Tamar Shochat
Sleepiness is a common complaint during the night shift and may impair performance. The current study aimed to identify bio-psycho-social factors associated with subjective sleepiness during the night shift. Ninety-two female nurses working rotating shifts completed a sociodemographic questionnaire, the Munich ChronoType Questionaire for shift workers, the Pittsburg Sleep Quality Index and the Pre-sleep Arousal Scale. Subjective sleepiness was measured hourly during two night shifts using the Karolinska Sleepiness Scale, and activity monitors assessed sleep duration 24-hours before each shift...
December 14, 2017: Ergonomics
https://www.readbyqxmd.com/read/29237053/beyond-sleep-duration-bidirectional-associations-between-chronotype-social-jetlag-and-drinking-behaviors-in-a-longitudinal-sample-of-us-high-school-students
#2
Denise L Haynie, Daniel Lewin, Jeremy W Luk, Leah M Lipsky, Fearghal O'Brien, Ronald J Iannotti, Danping Liu, Bruce G Simons-Morton
Health Behavior in School-Aged Children: NEXT Longitudinal Study 2009-2013, https://clinicaltrials.gov/ct2/show/NCT01031160?term=Simons-Morton&rank=3, NCT01031160.
December 9, 2017: Sleep
https://www.readbyqxmd.com/read/29221776/sleep-characteristics-associated-with-drowsy-driving
#3
Jun-Sang Sunwoo, Young Hwangbo, Won-Joo Kim, Min Kyung Chu, Chang-Ho Yun, Kwang Ik Yang
OBJECTIVE: The aim of this study was to evaluate sleep characteristics associated with drowsy driving in an adult population. METHODS: The study subjects consisted of 1675 adults aged 19 years or older who completed a population-based questionnaire survey on sleep habits. Experiences of drowsy driving were obtained from self-reported data. We investigated sleep-related variables including sleep duration, sleep efficiency, chronotype, subjective sleep perception, daytime sleepiness, sleep quality, and snoring...
December 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29157641/a-process-oriented-model-linking-adolescents-sleep-hygiene-and-psychological-functioning-the-moderating-role-of-school-start-times
#4
Jack S Peltz, Ronald D Rogge, Heidi Connolly, Thomas G O'Connor
OBJECTIVE: To examine a mediational model linking sleep hygiene to better mental health in adolescents via the mechanism of improved sleep quality, and to test the moderating role of school start times (SST) (before 8:30 AM vs. 8:30 AM or later) on that mediation model. DESIGN: Cross-sectional. SETTING: Online survey for high school students across the United States. PARTICIPANTS: A total of 197 adolescents aged 14-17 years old (Mage = 15...
December 2017: Sleep Health
https://www.readbyqxmd.com/read/29157006/chronotype-description-in-search-of-a-solid-subjective-amplitude-scale
#5
Halszka Oginska, Justyna Mojsa-Kaja, Olivier Mairesse
The term "subjective circadian amplitude" refers to the range or the distinctness of diurnal variations of arousal, that is, the awareness (or lack thereof) of difference between hyper- and hypo-activation phases, the ability to volitionally modulate one's own psychophysiological state, the strength of morning-evening preferences and flexibility of the rhythm or perceived stability of the circadian phase. The complexity of this construct is the source of difficulties in research and measurement. The psychometric features of distinctness subscales of the Chronotype Questionnaire and the Caen Chronotype Questionnaire are not satisfactory...
November 20, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29148844/circadian-phase-circadian-period-and-chronotype-are-reproducible-over-months
#6
Thomas Kantermann, Charmane I Eastman
The timing of the circadian clock, circadian period and chronotype varies among individuals. To date, not much is known about how these parameters vary over time in an individual. We performed an analysis of the following five common circadian clock and chronotype measures: 1) the dim light melatonin onset (DLMO, a measure of circadian phase), 2) phase angle of entrainment (the phase the circadian clock assumes within the 24-h day, measured here as the interval between DLMO and bedtime/dark onset), 3) free-running circadian period (tau) from an ultradian forced desynchrony protocol (tau influences circadian phase and phase angle of entrainment), 4) mid-sleep on work-free days (MSF from the Munich ChronoType Questionnaire; MCTQ) and 5) the score from the Morningness-Eveningness Questionnaire (MEQ)...
November 17, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29111446/high-and-low-use-of-electronic-media-during-nighttime-before-going-to-sleep-a-comparative-study-between-adolescents-attending-a-morning-or-afternoon-school-shift
#7
Arturo Arrona-Palacios
This study compared the effects of time spent on electronic media devices during nighttime before going to sleep on the sleep-wake cycle, daytime sleepiness, and chronotype in 568 Mexican students (288 girls, mean age = 14.08) attending a double school shift system (287 from morning shift and 281 from afternoon shift). Students completed anonymous self-report questionnaires. Results suggest that high exposure to an electronic media device may have an impact on their sleep-wake cycle, regardless of their school shift...
October 28, 2017: Journal of Adolescence
https://www.readbyqxmd.com/read/29106308/sleep-quality-and-methylation-status-of-core-circadian-rhythm-genes-among-nurses-and-midwives
#8
Agnieszka Bukowska-Damska, Edyta Reszka, Pawel Kaluzny, Edyta Wieczorek, Monika Przybek, Shanbeh Zienolddiny, Beata Peplonska
ABSTARCT Poor sleep quality or sleep restriction is associated with sleepiness and concentration problems. Moreover, chronic sleep restriction may affect metabolism, hormone secretion patterns and inflammatory responses. Limited recent reports suggest a potential link between sleep deprivation and epigenetic effects such as changes in DNA methylation profiles. The aim of the present study was to assess the potential association between poor sleep quality or sleep duration and the levels of 5-methylcytosine in the promoter regions of PER1, PER2, PER3, BMAL1, CLOCK, CRY1 CRY2 and NPAS2 genes, taking into account rotating night work and chronotype as potential confounders or modifiers...
2017: Chronobiology International
https://www.readbyqxmd.com/read/29061417/bipolar-disorder-in-asia-illness-course-and-contributing-factors
#9
REVIEW
Karthick Subramanian, Siddharth Sarkar, Shivanand Kattimani
BACKGROUND: Epidemiological studies analysing the course of Bipolar Disorder (BD) are relatively rare in the Asian context, contributing to the uncertainty regarding the prevalent course patterns and factors influencing such patterns. The current review identifies the regional characteristics of BD course patterns and the associated factors. METHODS: A review of the existing literature was done using 'PubMed' and 'Cochrane' databases which yielded 145 studies including those from all 48 Asian countries...
October 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/29031762/sleep-and-cognitive-performance-cross-sectional-associations-in%C3%A2-the%C3%A2-uk-biobank
#10
Simon D Kyle, Claire E Sexton, Bernd Feige, Annemarie I Luik, Jacqueline Lane, Richa Saxena, Simon G Anderson, David A Bechtold, William Dixon, Max A Little, David Ray, Dieter Riemann, Colin A Espie, Martin K Rutter, Kai Spiegelhalder
OBJECTIVE: The relationship between insomnia symptoms and cognitive performance is unclear, particularly at the population level. We conducted the largest examination of this association to date through analysis of the UK Biobank, a large population-based sample of adults aged 40-69 years. We also sought to determine associations between cognitive performance and self-reported chronotype, sleep medication use and sleep duration. METHODS: This cross-sectional, population-based study involved 477,529 participants, comprising 133,314 patients with frequent insomnia symptoms (age: 57...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29031757/what-predicts-inattention-in-adolescents-an-experience-sampling-study-comparing-chronotype-subjective-and-objective-sleep-parameters
#11
Timo Hennig, Katarina Krkovic, Tania M Lincoln
OBJECTIVE: Many adolescents sleep insufficiently, which may negatively affect their functioning during the day. To improve sleep interventions, we need a better understanding of the specific sleep-related parameters that predict poor functioning. We investigated to which extent subjective and objective parameters of sleep in the preceding night (state parameters) and the trait variable chronotype predict daytime inattention as an indicator of poor functioning. METHODS: We conducted an experience-sampling study over one week with 61 adolescents (30 girls, 31 boys; mean age = 15...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28994246/time-to-learn-how-chronotype-impacts-education
#12
REVIEW
Giulia Zerbini, Martha Merrow
A growing body of literature has linked chronotype and sleep to school performance. Chronotype is under the control of the circadian clock and refers to sleep timing and diurnal preferences. Chronotype changes with age and is latest during adolescence, giving rise to a mismatch between the (late) circadian clock and the (early) school clock. In general, evening (late) chronotypes obtain lower grades. School performance is influenced by many other factors, such as motivation, intelligence, and conscientiousness...
October 10, 2017: PsyCh Journal
https://www.readbyqxmd.com/read/28977221/chronotype-and-work-shift-in-nursing-workers-of-university-hospitals
#13
Rosângela Marion da Silva, Regina Célia Gollner Zeitoune, Carmem Lúcia Colomé Beck, Milva Maria Figueiredo de Martino, Francine Cassol Prestes, Marli Maria Loro
Objective: To identify the predominant chronotype in nursing workers who work in surgical clinics of university hospitals and to verify the association with work shift. Method: Cross-sectional study, performed in surgical clinics of university hospitals in the Southern region of Brazil. The sample of 270 nursing workers answered questions of socio-occupational characterization, of health and the Morningness-Eveningness Questionnaire of Horne and Östberg. We performed a descriptive and bivariate analysis with the help of the SPSS software and confidence interval of 95%...
September 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28944680/chronotypes-and-circadian-timing-in-migraine
#14
Wpj van Oosterhout, Ejw van Someren, G G Schoonman, M A Louter, G J Lammers, M D Ferrari, G M Terwindt
Background It has been suggested that migraine attacks strike according to circadian patterns and that this might be related to individual chronotype. Here we evaluated and correlated individual chronotypes, stability of the circadian rhythm, and circadian attack timing in a large and well-characterised migraine population. Methods In 2875 migraine patients and 200 non-headache controls we assessed differences in: (i) distribution of chronotypes (Münich Chronotype Questionnaire); (ii) the circadian rhythm's amplitude and stability (Circadian Type Inventory); and (iii) circadian timing of migraine attacks...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28884932/the-relationship-between-depression-and-chronotype-a-longitudinal-assessment-during-childhood-and-adolescence
#15
Dustin A Haraden, Benjamin C Mullin, Benjamin L Hankin
BACKGROUND/OBJECTIVE: During adolescence, chronotype shifts toward "eveningness." "Eveningness" is related to negative physical and mental health outcomes. Little is known about what influences the shift in chronotype beyond pubertal status. The current study examined the influence of earlier depression predicting later individual differences in adolescent chronotype, accounting for pubertal status, and the prospective prediction of later increases in depression from earlier chronotype...
October 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28880049/sleep-and-glycemic-control-in-adolescents-with-type-1-diabetes
#16
Julia von Schnurbein, Claudia Boettcher, Stephanie Brandt, Beate Karges, Desiree Dunstheimer, Angela Galler, Christian Denzer, Friederike Denzer, Heike Vollbach, Martin Wabitsch, Till Roenneberg, Celine Vetter
BACKGROUND: Increasing evidence link sleep curtailment and circadian misalignment with adverse metabolic outcome. Adolescents might be most affected, given their late sleep timing and early school and work start times. OBJECTIVE: Our aim was to examine the impact of poor sleeping habits on glycemic control in adolescents with type 1 diabetes. SUBJECTS AND METHODS: This was a non-interventional multicenter study across Germany recruiting pubertally mature adolescents with type 1 diabetes...
June 14, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28769855/ratings-of-perceived-exertion-and-self-reported-mood-state-in-response-to-high-intensity-interval-training-a-crossover-study-on-the-effect-of-chronotype
#17
Jacopo A Vitale, Antonio La Torre, Roberto Baldassarre, Maria F Piacentini, Matteo Bonato
The aim of this study was to investigate the influence of chronotype on mood state and ratings of perceived exertion (RPE) before and in response to acute high intensity interval exercise (HIIE) performed at different times of the day. Based on the morningness-eveningness questionnaire, 12 morning-types (M-types; N = 12; age 21 ± 2 years; height 179 ± 5 cm; body mass 74 ± 12 kg) and 11 evening-types (E-types; N = 11; age 21 ± 2 years; height 181 ± 11 cm; body mass 76 ± 11 kg) were enrolled in a randomized crossover study...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28707304/actigraph-measures-of-sleep-among-female-hospital-employees-working-day-or-alternating-day-and-night-shifts
#18
Jill Korsiak, Joan Tranmer, Michael Leung, Michael M Borghese, Kristan J Aronson
Sleep disturbance is common among shift workers, and may be an important factor in the effect of shift work on chronic disease development. In this cross-sectional study, we described sleep patterns of 294 female hospital workers (142 alternating day-night shift workers, 152 day workers) and determined associations between shift work and sleep duration. Rest-activity cycles were recorded with the ActiGraph GT3X+ for 1 week. Analyses were stratified by chronotype of shift workers. Using all study days to calculate average sleep duration, shift workers slept approximately 13 min less than day workers during main sleep periods, while 24-h sleep duration did not differ between day workers and shift workers...
July 14, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28701566/chronotype-variation-drives-night-time-sentinel-like-behaviour-in-hunter-gatherers
#19
David R Samson, Alyssa N Crittenden, Ibrahim A Mabulla, Audax Z P Mabulla, Charles L Nunn
Sleep is essential for survival, yet it also represents a time of extreme vulnerability to predation, hostile conspecifics and environmental dangers. To reduce the risks of sleeping, the sentinel hypothesis proposes that group-living animals share the task of vigilance during sleep, with some individuals sleeping while others are awake. To investigate sentinel-like behaviour in sleeping humans, we investigated activity patterns at night among Hadza hunter-gatherers of Tanzania. Using actigraphy, we discovered that all subjects were simultaneously scored as asleep for only 18 min in total over 20 days of observation, with a median of eight individuals awake throughout the night-time period; thus, one or more individuals was awake (or in light stages of sleep) during 99...
July 12, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28689312/sleep-chronotype-and-sleep-hygiene-in-children-with-attention-deficit-hyperactivity-disorder-autism-spectrum-disorder-and-controls
#20
K B van der Heijden, R J Stoffelsen, A Popma, H Swaab
Sleep problems are highly prevalent in ADHD and autism spectrum disorder (ASD). Better insight in the etiology is of clinical importance since intervention and prevention strategies of sleep problems are directed at underlying mechanisms. We evaluated the association of sleep problems and sleep patterns with sleep hygiene (behavioral/environmental practices that influence sleep quality, e.g. caffeine use), access to electronic media, chronotype, and anxiety/depression in children aged 6-12 years with ADHD, ASD, or typical development (TD) using parental questionnaires...
July 8, 2017: European Child & Adolescent Psychiatry
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