keyword
MENU ▼
Read by QxMD icon Read
search

Chronotype

keyword
https://www.readbyqxmd.com/read/28430534/chronobiological-factors-for-compassion-satisfaction-and-fatigue-among-ambulatory-oncology-caregivers
#1
Daniela Bellicoso, Maureen Trudeau, Margaret I Fitch, Martin R Ralph
Primary caregivers for victims of chronic illness and or trauma experience both positive and negative emotional consequences. These are broadly classified as compassion satisfaction (CS) and compassion fatigue (CF). Because one of the components of CF, burnout, varies with chronotype and sleep quality, we assessed the influence of chronobiological features on the broader constructs of CS and CF. Responses from primary ambulatory care oncology staff working dayshifts were assessed for potential relationships of chronotype and sleep quality with CS and CF using the professional quality of life scale...
April 21, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28426387/characterization-of-bimodal-chronotype-and-its-association-with-sleep-a-population-based-study
#2
Priscila Farias Tempaku, Juliana Ramirez Arruda, Diego Robles Mazzotti, Bruno S B Gonçalves, Mário Pedrazzoli, Lia Bittencourt, Sergio Tufik
The circadian system coordinates internal events in a daily schedule to make sure that the body systems are synchronized to environmental time and internal cues. One important behavioral aspect of the circadian system is the chronotype. It is usually assessed through subjective questionnaires, being the Horne-Ostberg Morningness-Eveningness Questionnaire (MEQ) one of the most used. It classifies individuals into three major categories: morning, evening, and intermediate types. Recently, it has been hypothesized the existence of a fourth chronotype, the bimodal type, through an algorithm derived from the MEQ responses...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28415855/predicting-jet-lag-in-long-haul-cabin-crew-the-role-of-illness-cognitions-and-behaviour
#3
Cristina Ruscitto, Jane Ogden
OBJECTIVE: Established risk factors for jet lag are mostly physiological including circadian preference, age, gender, the number of flight zones crossed and to some extent direction of travel. Some research has also highlighted a role for psychosocial factors including sleep, diet and 'circadian' health behaviours and illness cognitions although this remains relatively untested. The aim of this study was to evaluate the role of sleep, diet and illness cognitions in predicting perceived jet lag amongst long-haul crew...
April 18, 2017: Psychology & Health
https://www.readbyqxmd.com/read/28409690/salivary-cortisol-concentration-after-high-intensity-interval-exercise-time-of-day-and-chronotype-effect
#4
Matteo Bonato, Antonio La Torre, Marina Saresella, Ivana Marventano, Giampiero Merati, Jacopo Antonino Vitale
Due to personal and working necessities, the time for exercise is often short, and scheduled early in the morning or late in the afternoon. Cortisol plays a central role in the physiological and behavioral response to a physical challenge and can be considered as an index of exercise stress. Therefore, the aim of this study was to evaluate the influence of the circadian phenotype classification on salivary cortisol concentration in relation to an acute session of high-intensity interval exercise (HIIE) performed at different times of the day...
April 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28386434/repeatability-of-circadian-behavioural-variation-revealed-in-free-ranging-marine-fish
#5
Josep Alós, Martina Martorell-Barceló, Andrea Campos-Candela
Repeatable between-individual differences in the behavioural manifestation of underlying circadian rhythms determine chronotypes in humans and terrestrial animals. Here, we have repeatedly measured three circadian behaviours, awakening time, rest onset and rest duration, in the free-ranging pearly razorfish, Xyrithchys novacula, facilitated by acoustic tracking technology and hidden Markov models. In addition, daily travelled distance, a standard measure of daily activity as fish personality trait, was repeatedly assessed using a State-Space Model...
February 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28385063/clocking-self-regulation-why-time-of-day-matters-for-health-psychology
#6
Brett M Millar
Various lines of research have identified a number of factors that can impair a person's ability and motivation to exercise self-control, here self-regulation, in the face of a tempting object (e.g., food, sex, alcohol/drugs, smoking). Each of these in-situ factors-the availability of the tempting object, one's desire for it, and impaired affective and cognitive functioning (most notably from sleep-related fatigue, daily 'wear and tear', and intoxication)-makes self-regulation more difficult, and even more so when they co-occur...
April 6, 2017: Health Psychology Review
https://www.readbyqxmd.com/read/28378787/from-lark-to-owl-developmental-changes-in-morningness-eveningness-from-new-borns-to-early-adulthood
#7
Christoph Randler, Corina Faßl, Nadine Kalb
Morningness-eveningness or chronotype changes significantly throughout the life span. This has been reported for the transition during adolescence in some studies, and to a lesser extent in early adulthood. Primary and pre-school children have been under investigation in fewer studies. This is the first comprehensive study covering the age range from very young children until early adulthood (0-30 years) based on the same measurement instrument. Here, we show that the turn towards eveningness starts at an early age in German children...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28378363/impact-of-sleep-inertia-on-visual-selective-attention-for-rare-targets-and-the-influence-of-chronotype
#8
Hannah K Ritchie, Tina M Burke, Tristan B Dear, Andrew W Mchill, John Axelsson, Kenneth P Wright
Sleep inertia is affected by circadian phase, with worse performance upon awakening from sleep during the biological night than biological day. Visual search/selective visual attention performance is known to be sensitive to sleep inertia and circadian phase. Individual differences exist in the circadian timing of habitual wake time, which may contribute to individual differences in sleep inertia. Because later chronotypes awaken at an earlier circadian phase, we hypothesized that later chronotypes would have worse visual search performance during sleep inertia than earlier chronotypes if awakened at habitual wake time...
April 4, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28377415/circadian-disruption-and-prostate-cancer-risk-an-updated-review-of-epidemiological-evidences
#9
Méyomo G Wendeu-Foyet, Florence Menegaux
Since the publication of the IARC Monograph in 2007 classifying night shift work leading to a disruption of circadian rhythm as probably carcinogenic to humans, there is an increasingly growing interest in understanding how circadian disruption may play a role in cancer development. This systematic review provides a comprehensive update on epidemiological evidences on circadian disruption and prostate cancer since the last review published in 2012. We identified 12 new studies evaluating the effects of several circadian disruptors such as night shift work, sleep patterns, and circadian genes in prostate cancer risk...
April 4, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28366340/excessive-daytime-sleepiness-in-adults-with-possible-attention-deficit-hyperactivity-disorder-adhd-a-web-based-cross-sectional-study
#10
Wakako Ito, Yoko Komada, Isa Okajima, Yuichi Inoue
OBJECTIVES: Arousal dysregulation has been speculated to be involved in the pathological mechanism of attention deficit/hyperactivity disorder (ADHD). However, there has been no epidemiological study assessing the real condition of excessive daytime sleepiness (EDS) in adults with ADHD. This study investigated the prevalence of EDS and the relationship between sleepiness and ADHD symptoms in adults with possible ADHD. METHODS: An observational, cross-sectional, web-based study was performed...
April 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28364486/genetic-basis-of-chronotype-in-humans-insights-from-three-landmark-gwas
#11
David A Kalmbach, Logan D Schneider, Joseph Cheung, Sarah J Bertrand, Thiruchelvam Kariharan, Allan I Pack, Philip R Gehrman
Study Objectives: Chronotype, or diurnal preference, refers to behavioral manifestations of the endogenous circadian system that governs preferred timing of sleep and wake. As variations in circadian timing and system perturbations are linked to disease development, the fundamental biology of chronotype has received attention for its role in the regulation and dysregulation of sleep and related illnesses. Family studies indicate that chronotype is a heritable trait, thus directing attention toward its genetic basis...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28362229/late-chronotypes-are-associated-with-neoadjuvant-chemotherapy-induced-nausea-and-vomiting-in-women-with-breast-cancer
#12
Kwang-Min Lee, Doo-Young Jung, Heesung Hwang, Won-Hyoung Kim, Joo-Young Lee, Tae-Yong Kim, Seock-Ah Im, Kyung-Hun Lee, David Spiegel, Bong-Jin Hahm
Neoadjuvant chemotherapy, that is, the administration of chemotherapy before surgery, has been commonly used for locally advanced breast cancer to improve the surgical outcomes and increase the opportunity for breast-conserving therapy. Women with breast cancer often receive an anthracycline-based regimen as the neoadjuvant chemotherapy, which is associated with a high risk of emesis. Despite the development of novel antiemetics, chemotherapy-induced nausea and vomiting (CINV) has been commonly reported as a major adverse effect, affecting the quality of life of the patients...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28360934/sleep-disturbances-and-mental-strain-in-university-students-results-from-an-online-survey-in-luxembourg-and-germany
#13
Angelika A Schlarb, Merle Claßen, Julia Grünwald, Claus Vögele
OBJECTIVES: This study examined the prevalence of sleep disturbances and mental strain in students from two European countries, Luxembourg and Germany. METHODS: A total of 2831 students took part in an online survey, with 2777 students from Germany and 184 students from Luxembourg. Sleep disturbances were assessed with the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale, and aspects of mental strain using the Patient Health Questionnaire, the Social-Interactive-Anxiety Scale, the self-efficacy questionnaire and the test anxiety questionnaire...
2017: International Journal of Mental Health Systems
https://www.readbyqxmd.com/read/28357513/not-later-but-longer-sleep-chronotype-and-light-exposure-in-adolescents-with-remitted-depression-compared-to-healthy-controls
#14
Lena Katharina Keller, Barbara Grünewald, Céline Vetter, Till Roenneberg, Gerd Schulte-Körne
The relationship between sleep and adolescent depression is much discussed, but still not fully understood. One important sleep variable is self-selected sleep timing, which is also referred to as chronotype. Chronotype is mostly regulated by the circadian clock that synchronises the internal time of the body with the external light dark cycle. A late chronotype as well as a misalignment between internal time and external time such as social jetlag has been shown to be associated with depressive symptoms in adults...
March 29, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28351492/prevalence-of-sleep-bruxism-and-awake-bruxism-in-different-chronotype-profiles-hypothesis-of-an-association
#15
J M Serra-Negra, F Lobbezoo, C C Martins, E Stellini, D Manfredini
Sleep (SB) and awake bruxism (AB) recognize a multifactorial etiology and have a relationship with several psychological factors. Psychological disorders have recently been associated also with the chronotype, which is the propensity for an individual to be especially active at a particular time during a 24-h period. Based on the chronotype, the two extreme profiles are morningness and eveningness individuals. Due to the relationship that both the chronotype and bruxism have with psychological factors and the fact that performing tasks not compatible with chronotype can trigger stress, this review presents the hypothesis that the prevalence of SB and AB can differ with the various chronotype profiles...
April 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28343215/a-study-of-biological-rhythm-disturbances-in-polish-remitted-bipolar-patients-using-the-brian-csm-and-swpaq-scales
#16
Ewa Dopierala, Adrian Chrobak, Flavio Kapczinski, Michał Michalak, Anna Tereszko, Ewa Ferensztajn-Rochowiak, Dominika Dudek, Jan Jaracz, Marcin Siwek, Janusz K Rybakowski
BACKGROUND/AIMS: The Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN) is a novel tool allowing for a complex assessment of biological rhythms. We compared patients with bipolar disorder (BD) and healthy control subjects (HC) using the Polish version of the BRIAN scale. METHOD: Fifty-four remitted BD patients (17 males and 37 females aged 52 ± 13 years) and 54 healthy control subjects (25 males and 29 females aged 42 ± 14 years) were studied...
2016: Neuropsychobiology
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
#17
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
#18
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
#19
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
#20
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
keyword
keyword
34169
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"