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Journal of Sleep Research

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https://www.readbyqxmd.com/read/27933667/a-mobile-web-based-system-can-improve-positive-airway-pressure-adherence
#1
Jordanna M Hostler, Karen L Sheikh, Teotimo F Andrada, Andrei Khramtsov, Paul R Holley, Aaron B Holley
SleepMapper is a mobile, web-based system that allows patients to self-monitor their positive airway pressure therapy, and provides feedback and education in real time. In addition to the usual, comprehensive support provided at our clinic, we gave the SleepMapper to 30 patients initiating positive airway pressure. They were compared with patients initiating positive airway pressure at our clinic without SleepMapper (controls) to determine whether SleepMapper affected adherence. A total of 61 patients had polysomnographic and adherence data analysed, 30 were given SleepMapper and 31 received our standard of care...
December 8, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27928860/physical-activity-subjective-sleep-quality-and-time-in-bed-do-not-vary-by-moon-phase-in-german-adolescents
#2
Maia P Smith, Marie Standl, Holger Schulz, Joachim Heinrich
Lunar periodicity in human biology and behaviour, particularly sleep, has been reported. However, estimated relationships vary in direction (more or less sleep with full moon) if they exist at all, and studies tend to be so small that there is potential for confounding by weekly or monthly cycles. Lunar variation in physical activity has been posited as a driver of this relationship, but is likewise not well studied. We explore the association between lunar cycle, sleep and physical activity in a population-based sample of 1411 Germans age 14-17 years (46% male)...
December 8, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27921347/objective-snoring-time-and-carotid-intima-media-thickness-in-non-apneic-female-snorers
#3
Jinyoung Kim, Allan I Pack, Barbara J Riegel, Julio A Chirinos, Alexandra Hanlon, Seung Ku Lee, Chol Shin
Controversy persists about whether snoring can affect atherosclerotic changes in adjacent vessels, independently of obstructive sleep apnea and other cardiovascular risk factors. This study examined the independent association between snoring and carotid artery intima-media thickness (IMT) in non-apneic snorers and non-snorers. We studied 180 non-apneic snorers and non-snorers participating in a full-night home-based sleep study. Snoring sound was measured objectively by a microphone. Based on snoring time across the night, participants were classified as non-snorers (snoring time: 0%), mild snorers (1-25%) and moderate to heavy snorers (≥25%)...
December 6, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27905159/the-interaction-of-sleep-and-amyloid-deposition-on-cognitive-performance
#4
Jennifer R V Molano, Catherine M Roe, Yo-El S Ju
Sleep difficulties are emerging as a risk factor for dementia. This study examined the effect of sleep and amyloid deposition on cognitive performance in cognitively normal adults. Sleep efficiency was determined by actigraphy. Cerebrospinal fluid Aβ42 levels <500 pg mL(-1) , indicating amyloid deposition, was present in 23 participants. Psychometric tests included the Free and Cued Selective Reminding Test, Trail Making Test A and B, Animal Fluency, Letter Number Sequencing, and the Mini Mental State Examination...
December 1, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27896929/impact-of-inflammation-and-oxidative-stress-on-carotid-intima-media-thickness-in-obstructive-sleep-apnea-patients-without-metabolic-syndrome
#5
Ya-Ting Chang, Hsin-Ching Lin, Wen-Neng Chang, Nai-Wen Tsai, Chih-Cheng Huang, Hung-Chen Wang, Chia-Te Kung, Yu-Jih Su, Wei-Che Lin, Ben-Chung Cheng, Chih-Min Su, Ting-Yao Chen, Yi-Fang Chiang, Cheng-Hsien Lu
Obstructive sleep apnea (OSA) increases the risk of cardiovascular diseases, and carotid intima-media thickness (IMT) is a good indicator of the severity of atherosclerotic disease. This study tested the hypothesis that inflammation and oxidative stress determined carotid IMT in patients with OSA. The carotid IMT, mean systolic and diastolic pressure (night and morning) were significantly higher and the level of thiols and high-density lipoprotein were significantly lower in our 121 OSA patients than in 27 controls (P < 0...
November 28, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27878883/school-start-time-and-sleep-in-canadian-adolescents
#6
Geneviève Gariépy, Ian Janssen, Mariane Sentenac, Frank J Elgar
Insufficient sleep is a serious problem in adolescents and school start time is thought to be a key contributor. This study provided the first comprehensive assessment of school start times across Canada and examined whether school start times were associated with sleep duration and tiredness among adolescents. We collected information on school start times from 362 schools that participated in the 2013/2014 Health Behaviour in School-aged Children study. We calculated sleep duration from weekday bedtime and wake time reported by 29 635 students (aged 10-18 years)...
November 23, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27868260/an-experimental-study-of-adolescent-sleep-restriction-during-a-simulated-school-week-changes-in-phase-sleep-staging-performance-and-sleepiness
#7
Alex Agostini, Mary A Carskadon, Jillian Dorrian, Scott Coussens, Michelle A Short
This laboratory study investigated the impact of restricted sleep during a simulated school week on circadian phase, sleep stages and daytime functioning. Changes were examined across and within days and during a simulated weekend recovery. Participants were 12 healthy secondary school students (six male) aged 15-17 years [mean = 16.1 years, standard deviation (SD) = 0.9]. After 2 nights with 10 h (21:30-07:30 hours), time in bed was restricted to 5 h for 5 nights (02:30-07:30 hours), then returned to 10 h time in bed for 2 nights (21:30-07:30 hours)...
November 21, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27862514/patient-room-lighting-influences-on-sleep-appraisal-and-mood-in-hospitalized-people
#8
Marina C Giménez, Leonie M Geerdinck, Mathijs Versteylen, Pieter Leffers, Gaby J B M Meekes, Hannelore Herremans, Boris de Ruyter, Jan Willem Bikker, Petra M J C Kuijpers, Luc J M Schlangen
Irregular 24 h light/dark cycles with night-time light exposure and a low amplitude are disruptive for sleep, mood and circadian rhythms. Nevertheless such lighting conditions are quite common in medical care facilities. A controlled clinical trial among 196 cardiology ward patients (mean age 66.5 ± 13.1 years SD) investigated how a patient room lighting intervention affects sleep, appraisal and mood across hospitalization. Patients were either assigned to a standardly-lit room or to a room with an interventional lighting system offering a dynamic 24 h light/dark cycle with low nocturnal light exposure and 2 h of bright light (1750 lux) during daytime...
November 10, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27807903/effect-of-sodium-oxybate-on-disrupted-nighttime-sleep-in-patients-with-narcolepsy
#9
Thomas Roth, Yves Dauvilliers, Diane Guinta, Sarah Alvarez-Horine, Efim Dynin, Jed Black
This post hoc analysis evaluated the dose-related effects of sodium oxybate on sleep continuity and nocturnal sleep quality in patients with narcolepsy-cataplexy. Polysomnography data, including shifts to Stage N1/Wake, were from a randomized, placebo-controlled trial of sodium oxybate. Patients were ≥16 years old with a diagnosis of narcolepsy including symptoms of cataplexy and excessive daytime sleepiness. Treatment was for 8 weeks with placebo or sodium oxybate 4.5, 6 or 9 g administered as two equally divided nightly doses...
November 3, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27761958/validity-of-administrative-data-for-identification-of-obstructive-sleep-apnea
#10
Cheryl R Laratta, Willis H Tsai, James Wick, Sachin R Pendharkar, Kerri A Johannson, Paul E Ronksley
Obstructive sleep apnea (OSA) is a common condition associated with significant morbidity and health-care utilization. We determined the validity of an algorithm derived from administrative data for identifying OSA using the respiratory disturbance index (RDI) as the reference standard. We conducted a retrospective cohort study of adults in Alberta, Canada referred for facility and community-based sleep diagnostic testing between July 2005 and August 2007. Validity indices were estimated for several case definitions of OSA derived from outpatient physician billing claims and hospital discharge codes...
October 20, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27758010/morningness-eveningness-and-daytime-functioning-in-university-students-the-mediating-role-of-sleep-characteristics
#11
Marija Bakotic, Biserka Radosevic-Vidacek, Adrijana Koscec Bjelajac
The aim of this study was to explore the mediating role of sleep characteristics in the relationship between morningness-eveningness and three different aspects of daytime functioning: daytime sleepiness, depressive mood and substance use in university students. A multiple mediator model was proposed with sleep debt, poor sleep quality and bedtime delay at weekends as parallel mediators in these relationships. We analysed the data of 1052 university students aged 18-25 years who completed a modified version of the School Sleep Habits Survey, which included questions on sleep and the Composite Scale of Morningness, Sleepiness Scale, Depressive Mood Scale and Substance Use Scale...
October 19, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27739157/modelling-maintenance-of-wakefulness-in-rats-comparing-potential-non-invasive-sleep-restriction-methods-and-their-effects-on-sleep-and-attentional-performance
#12
Andrew Mccarthy, Sally Loomis, Brian Eastwood, Keith A Wafford, Raphaëlle Winsky-Sommerer, Gary Gilmour
While several methods have been used to restrict the sleep of experimental animals, it is often unclear whether these different forms of sleep restriction have comparable effects on sleep-wake architecture or functional capacity. The present study compared four models of sleep restriction, using enforced wakefulness by rotation of cylindrical home cages over 11 h in male Wistar rats. These included an electroencephalographic-driven 'Biofeedback' method and three non-invasive methods where rotation was triggered according to a 'Constant', 'Decreasing' or random protocol based upon the 'Weibull' distribution fit to an archival Biofeedback dataset...
October 14, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27734569/is-it-nutrients-food-items-diet-quality-or-eating-behaviours-that-are-responsible-for-the-association-of-children-s-diet-with-sleep
#13
Mohammad K A Khan, Erin L Faught, Yen Li Chu, John P Ekwaru, Kate E Storey, Paul J Veugelers
Both diet quality and sleep duration of children have declined in the past decades. Several studies have suggested that diet and sleep are associated; however, it is not established which aspects of the diet are responsible for this association. Is it nutrients, food items, diet quality or eating behaviours? We surveyed 2261 grade 5 children on their dietary intake and eating behaviours, and their parents on their sleep duration and sleep quality. We performed factor analysis to identify and quantify the essential factors among 57 nutrients, 132 food items and 19 eating behaviours...
October 13, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27641365/acute-sleep-restriction-increases-dietary-intake-in-preschool-age-children
#14
Elsa N Mullins, Alison L Miller, Sherin S Cherian, Julie C Lumeng, Kenneth P Wright, Salome Kurth, Monique K Lebourgeois
Epidemiological findings suggest short sleep duration is associated with overweight and obesity across the lifespan. In adults, experimental sleep loss increases caloric intake more than total daily energy needs, thus leading to weight gain. To date, little is known about the relationship between sleep restriction and dietary intake in preschool children. Healthy children (n = 10; 41.2 ± 5.4 months; 5 females) followed a strict sleep schedule for 5 days before each experimental condition: 1 day of baseline sleep (nap and scheduled bedtime/wake time) and 1 day of sleep restriction (no-nap and ~2...
September 19, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27634632/sleep-dependent-memory-consolidation-is-related-to-perceived-value-of-learned-material
#15
Elaine van Rijn, Carlo Lucignoli, Cristina Izura, Mark T Blagrove
Although many types of newly encoded information can be consolidated during sleep, an enhanced effect has been found for memories tagged as relevant to the future, such as through knowledge of future testing or payment for successful recall. In the current study, participants (n = 80) learned Welsh and Breton translations of English words, and intrinsic relevance of learned material was operationalized as perceived value of the Welsh and Breton languages. Participants were non-Welsh native English speakers who had recently arrived in Wales...
September 16, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27634562/sleep-restriction-in-rats-leads-to-changes-in-operant-behaviour-indicative-of-reduced-prefrontal-cortex-function
#16
Jeanine Kamphuis, Swetlana Baichel, Marike Lancel, Sietse F de Boer, Jaap M Koolhaas, Peter Meerlo
Sleep deprivation has profound effects on cognitive performance, and some of these effects may be mediated by impaired prefrontal cortex function. In search of an animal model to investigate this relationship we studied the influence of restricted sleep on operant conditioning in rats, particularly the performance in a differential reinforcement of low rate responding (DRL) task, which is highly dependent upon an intact prefrontal cortex. Animals were trained to withhold a lever press until an imposed delay of 30 s after the last press had passed in order to achieve a food reward...
September 16, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27634437/eeg-spectral-analysis-of-nrem-sleep-in-a-large-sample-of-patients-with-insomnia-and-good-sleepers-effects-of-age-sex-and-part-of-the-night
#17
Vladimir Svetnik, Ellen S Snyder, Junshui Ma, Peining Tao, Christopher Lines, William Joseph Herring
Previous studies of the differences between patients with insomnia and good sleepers with regard to quantitative electroencephalographic measures have mostly utilized small samples and consequently had limited ability to account for potentially important confounding factors of age, sex and part of the night. We conducted a power spectral analysis using a large database of sleep electroencephalographic recordings to evaluate differences between patients with insomnia (N = 803) and good sleepers (N = 811), while simultaneously accounting for these factors and their interaction...
September 16, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27624588/preferential-attention-towards-the-eye-region-amongst-individuals-with-insomnia
#18
Umair Akram, Jason G Ellis, Andriy Myachykov, Nicola L Barclay
People with insomnia often perceive their own facial appearance as more tired compared with the appearance of others. Evidence also highlights the eye-region in projecting tiredness cues to perceivers, and tiredness judgements often rely on preferential attention towards this region. Using a novel eye-tracking paradigm, this study examined: (i) whether individuals with insomnia display preferential attention towards the eye-region, relative to nose and mouth regions, whilst observing faces compared with normal-sleepers; and (ii) whether an attentional bias towards the eye-region amongst individuals with insomnia is self-specific or general in nature...
September 14, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27734594/sleep-in-infants-children-and-adolescents-parents-matter
#19
Derk-Jan Dijk
No abstract text is available yet for this article.
October 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27726227/sleep-downunder-2016-connections-abstracts-28th-asm-of-australasian-sleep-association-and-australasian-sleep-technologists-association-20-22-october-2016-adelaide-australia
#20
(no author information available yet)
No abstract text is available yet for this article.
October 2016: Journal of Sleep Research
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