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Journal of Sleep Research

Maria R Bonsignore, Jean-Louis Pepin, Ulla Anttalainen, Sophia E Schiza, Ozen K Basoglu, Athanasia Pataka, Paschalis Steiropoulos, Zoran Dogas, Ludger Grote, Jan Hedner, Walter T McNicholas, Oreste Marrone
Obstructive sleep apnea (OSA) and asthma are often associated and several studies suggest a bidirectional relationship between asthma and OSA. This study analyzed the characteristics of patients with suspected OSA from the European Sleep Apnea Database according to presence/absence of physician-diagnosed asthma. Cross-sectional data in 16,236 patients (29.1% female) referred for suspected OSA were analyzed according to occurrence of physician-diagnosed asthma for anthropometrics, OSA severity and sleepiness...
July 11, 2018: Journal of Sleep Research
Geneviève Gariépy, Kira E Riehm, Ross D Whitehead, Isabelle Doré, Frank J Elgar
Evidence suggests that the timing of sleep (chronotype) impacts mental health in young people, but previous studies have not accounted for sleep duration or school start time in this association, or examined a broad range of mental outcomes. In this study, we investigated the association between chronotype and mental health in a representative sample of adolescents from the 2014 Canadian Health Behaviour in School-Aged Children survey (29,635 students, 362 schools). We examined positive and negative aspects of mental health, using scores for emotional problems (range 0-33), emotional well-being (0-22), behavioural problems (0-28) and prosocial behaviours (0-25)...
July 11, 2018: Journal of Sleep Research
Dimitri Gavriloff, Bryony Sheaves, Amender Juss, Colin A Espie, Christopher B Miller, Simon D Kyle
This study investigated whether providing sham feedback about sleep to individuals with insomnia influenced daytime symptom reports, sleep-related attentional bias and psychomotor vigilance. Sixty-three participants meeting DSM-5 criteria for insomnia disorder were recruited from the community. Following baseline assessments and actigraphy briefing, participants were randomised to receive next-day sham feedback on sleep quality ("positive" vs. "negative" sleep efficiency condition). Feedback was delivered at habitual rise-time using an integrated actigraphy-diary watch to simulate wearable device behaviour...
July 10, 2018: Journal of Sleep Research
Su-Chen Fang, Chun-Jen Huang, Yu-Lin Wu, Pei-Yu Wu, Pei-Shan Tsai
Circadian rhythms and napping habits have been associated with cognitive function; however, little is known about the interaction effects on cognitive function. The present study examined the moderating effects of napping habits on the relationship between chronotypes and cognitive function decline in elderly adults. This cross-sectional study analysed data from the 2009 Taiwan National Health Interview Survey. A total of 1,724 elderly adults (aged ≥65 years) were included. Cognitive function was determined by the Mini-Mental State Examination...
July 9, 2018: Journal of Sleep Research
Ludger Grote, Sven Svedmyr, Jan Hedner
New European Union (EU) regulations state that untreated moderate to severe obstructive sleep apnea (OSA) coincident with excessive daytime sleepiness (EDS) constitutes a medical disorder leading to unfitness to drive. However, fitness to drive can be re-established by successful treatment of OSA and EDS. The aim of the current study was to compare patients undergoing the certification process with those of an unselected OSA patient cohort. The study compared consecutive patients in the certification group (n = 132) with a representative group of OSA patients with a current driving license and an Apnea Hypopnea Index (AHI) ≥ 15 n/h (n = 790)...
July 1, 2018: Journal of Sleep Research
Philipp O Valko, Bernd Roschitzki, Wolfgang Faigle, Jonas Grossmann, Christian Panse, Peter Biro, Micha Dambach, Donat R Spahn, Michael Weller, Roland Martin, Christian R Baumann
Fatigue in multiple sclerosis is a very common and cumbersome symptom, but its aetiology is poorly understood. Proteomics is increasingly implemented in multiple sclerosis research, but has not yet been used to study the neurobiological basis of fatigue in multiple sclerosis. To identify potential cerebrospinal fluid biomarkers of fatigue in multiple sclerosis, we collected cerebrospinal fluid of 20 patients with multiple sclerosis with fatigue (MS+), 20 patients with multiple sclerosis without fatigue (MS-), and 20 control subjects without multiple sclerosis and without fatigue (HC)...
July 1, 2018: Journal of Sleep Research
Tien-Chi Huang, Ping-Tao Tseng, Meng-Ni Wu, Brendon Stubbs, André F Carvalho, Pao-Yen Lin, Yen-Wen Chen, Tien-Yu Chen, Chung-Yao Hsu
Periodic limb movements during sleep present with repetitive movements, typically in the lower limbs, during sleep. Periodic limb movements during sleep have been proposed to be associated with increased risk of heart diseases. The aim of this study was to examine the co-morbidity rates of heart disease, including acute myocardial infarction, coronary artery disease and cardiovascular disease, in subjects with or without periodic limb movements during sleep through a meta-analysis. An electronic review of PubMed, Embase, ScienceDirect, Cochrane Library, ProQuest, Web of Science, ClinicalKey and ClinicalTrials...
June 28, 2018: Journal of Sleep Research
Sangchoon Jeon, Samantha Conley, Nancy S Redeker
Wrist-actigraphy is often used to measure sleep characteristics in a variety of populations, but discrepancies between actigraphic and polysomnographic measures have been noted in populations experiencing poor sleep quality. The purpose of this study is to examine the discrepancy between these measures and risk factors for discrepancy in people with heart failure using a novel index. We used sleep measures simultaneously recorded by actigraphy and polysomnography, and clinical data from a cross-sectional study of 155 patients with heart failure (age = 60...
June 25, 2018: Journal of Sleep Research
Renata C Cremaschi, Camila Hirotsu, Sergio Tufik, Fernando M Coelho
Narcolepsy is a rare sleep disorder classified in types 1 and 2. The co-morbidities of narcolepsy type 1, with hypocretin-1 deficiency, are established. Hypocretin-1 in the central and peripheral nervous systems regulates nociception and pain. However, the patients with narcolepsy type 2 have similar excessive daytime sleepiness and co-morbidities without elucidation. The objective of the study was to determine the frequency and the characteristic of chronic pain according to the type of narcolepsy. We also investigated the effect of the interaction between the nutritional status and the type of narcolepsy...
June 19, 2018: Journal of Sleep Research
Saad M Al Shareef, Sulman Basit, Sha Li, Corinne Pfister, Sylvain Pradervand, Michel Lecendreux, Geert Mayer, Yves Dauvilliers, Vincenzo Salpietro, Henry Houlden, Ahmed S BaHammam, Mehdi Tafti
Kleine-Levin syndrome (KLS) is a rare periodic hypersomnia with associated behavioural abnormalities but with often favourable prognosis. There is excess risk of KLS in first-degree relatives, suggesting a strong genetic contribution. So far, no mutation is identified in KLS and comprehensive genetic analysis of affected individuals is lacking. Here we performed whole genome single-nucleotide polymorphism (SNP) genotyping and exome sequencing in a large family with seven affected members. The identified gene with a mutation was resequenced in 38 sporadic KLS patients and the expression of the gene product was mapped in the mouse brain...
June 19, 2018: Journal of Sleep Research
Angelina Maric, Manuel Bürgi, Esther Werth, Christian R Baumann, Rositsa Poryazova
We aimed to investigate the effect of increased sleep pressure and shortened sleep duration on subjective sleep perception in relation to electroencephalographic sleep measures. We analyzed the data from a study in which 14 healthy male volunteers had completed a baseline assessment with 8 hr time in bed, a sleep deprivation (40 hr of wakefulness) and a sleep restriction protocol with 5 hr time in bed during 7 nights. In this work, we assessed perception index, derived through dividing the subjectively perceived total sleep time, wake after sleep onset and sleep latency duration by the objectively measured one at each condition...
June 5, 2018: Journal of Sleep Research
Christine Laganière, Hélène Gaudreau, Irina Pokhvisneva, Leslie Atkinson, Michael Meaney, Marie-Hélène Pennestri
Sleep rhythmic movements have been speculated to be a form of self-soothing. While this sleep-related movement has been associated with lower socioeconomic status, psychopathologies and maternal characteristics, prospective studies with sizeable sample and objective measurements are lacking. The objectives were: (a) to identify maternal characteristics predicting sleep rhythmic movements in children; and (b) to document behavioural/emotional problems in preschoolers with sleep rhythmic movements. Participants were mother-child dyads (N = 529) from the Adversity: Maternal Adversity, Vulnerability and Neurodevelopment cohort...
June 5, 2018: Journal of Sleep Research
Ana P Rivera-García, Irma E López Ruiz, Ignacio Ramírez-Salado, Jorge J González-Olvera, Fructuoso Ayala-Guerrero, Anabel Jiménez-Anguiano
Although motor activity is actively inhibited during rapid eye movement (REM) sleep, specific activations of the facial mimetic musculature have been observed during this stage, which may be associated with greater emotional dream mentation. Nevertheless, no specific biomarker of emotional valence or arousal related to dream content has been identified to date. In order to explore the electromyographic (EMG) activity (voltage, number, density and duration) of the corrugator and zygomaticus major muscles during REM sleep and its association with emotional dream mentation, this study performed a series of experimental awakenings after observing EMG facial activations during REM sleep...
June 4, 2018: Journal of Sleep Research
Fabien Sauvet, Danielle Gomez-Merino, Rodolphe Dorey, Sylvain Ciret, Thierry Gallopin, Catherine Drogou, Pierrick J Arnal, Mounir Chennaoui
The photoperiod has been evidenced to influence sleep regulation in the rat. Nevertheless, lengthening of the photoperiod beyond 30 days seems to have little effect on the 24-hr baseline level of sleep and the response to total sleep deprivation. We studied the effects of 12:12 (habitual) and 16:8 (long) light-dark photoperiods on sleep, locomotor activity and body core temperature, before and after 24 hr of total sleep deprivation. Eight rats were submitted for 14 days to light-dark 12:12 (lights on: 08:00 hours-20:00 hours) followed by total sleep deprivation, and then for 14 days to light-dark 16:8 (light extended to 24:00 hours) followed by total sleep deprivation...
June 4, 2018: Journal of Sleep Research
Davy Vancampfort, Brendon Stubbs, Joseph Firth, Noemi Hagemann, Inez Myin-Germeys, Aki Rintala, Michel Probst, Nicola Veronese, Ai Koyanagi
There is a lack of multinational research investigating the association between sleep problems and sedentary behaviour. In this study, we investigated the relationship between the time spent sedentary during waking hours and sleep problems in six low- and middle-income countries. Cross-sectional, community-based data from the Study on Global Ageing and Adult Health survey were analysed. Adjusted logistic regression analyses were undertaken to explore the relationship between self-reported sleep problems (such as difficulties falling asleep, waking up frequently during the night or waking up too early in the morning) in the last 30 days and self-reported sedentary time (categorized as <4, 4 to <8, 8 to <11 or ≥11 hr/day)...
May 30, 2018: Journal of Sleep Research
Yu-Shu Huang, Christian Guilleminault, Cheng-Hui Lin, Chia-Hsiang Chen, Wei-Chih Chin, Tzu-Shuang Chen
Excessively sleepy teenagers and young adults without sleep-disordered breathing are diagnosed with either narcolepsy type 1 or narcolepsy type 2, or hypersomnia, based on the presence/absence of cataplexy and the results of a multiple sleep latency test. However, there is controversy surrounding this nomenclature. We will try to find the differences between different diagnoses of hypersomnia from the results of the long-term follow-up evaluation of a sleep study. We diagnosed teenagers who had developed excessive daytime sleepiness based on the criteria of the International Classification of Sleep Disorders, 3rd edition...
May 29, 2018: Journal of Sleep Research
Francisco G Vital-Lopez, Sridhar Ramakrishnan, Tracy J Doty, Thomas J Balkin, Jaques Reifman
Sleep loss, which affects about one-third of the US population, can severely impair physical and neurobehavioural performance. Although caffeine, the most widely used stimulant in the world, can mitigate these effects, currently there are no tools to guide the timing and amount of caffeine consumption to optimize its benefits. In this work, we provide an optimization algorithm, suited for mobile computing platforms, to determine when and how much caffeine to consume, so as to safely maximize neurobehavioural performance at the desired time of the day, under any sleep-loss condition...
May 28, 2018: Journal of Sleep Research
Ozen K Basoglu, Ding Zou, Mehmet S Tasbakan, Jan Hedner, Silke Ryan, Johan Verbraecken, Pierre Escourrou, Ulla Antalainen, John A Kvamme, Maria R Bonsignore, Sofia Schiza, Ludger Grote
The effect of positive airway pressure treatment on weight and markers of central obesity in patients with obstructive sleep apnea remains unclear. We studied the change in body weight and anthropometric measures following positive airway pressure treatment in a large clinical cohort. Patients with obstructive sleep apnea with positive airway pressure treatment from the European Sleep Apnea Database registry (n = 1,415, 77% male, age 54 ± 11 [mean ± SD] years, body mass index 31.7 ± 6.4 kg/m2 , apnea-hypopnea index 37 ± 24 n per hr, Epworth Sleepiness Scale 10...
May 24, 2018: Journal of Sleep Research
David A Kalmbach, Jason R Anderson, Christopher L Drake
Sleep reactivity is the trait-like degree to which stress exposure disrupts sleep, resulting in difficulty falling and staying asleep. Individuals with highly reactive sleep systems experience drastic deterioration of sleep when stressed, whereas those with low sleep reactivity proceed largely unperturbed during stress. Research shows that genetics, familial history of insomnia, female gender and environmental stress influence how the sleep system responds to stress. Further work has identified neurobiological underpinnings for sleep reactivity involving disrupted cortical networks and dysregulation in the autonomic nervous system and hypothalamic-pituitary-adrenal axis...
May 24, 2018: Journal of Sleep Research
Torbjörn Åkerstedt, Francesca Ghilotti, Alessandra Grotta, Hongwei Zhao, Hans-Olov Adami, Ylva Trolle-Lagerros, Rino Bellocco
Previous studies have found a U-shaped relationship between mortality and (weekday) sleep duration. We here address the association of both weekday and weekend sleep duration with overall mortality. A cohort of 43,880 subjects was followed for 13 years through record-linkages. Cox proportional hazards regression models with attained age as time-scale were fitted to estimate multivariable-adjusted hazard ratios and 95% confidence intervals for mortality; stratified analyses on age (<65 years, ≥65 years) were conducted...
May 22, 2018: Journal of Sleep Research
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