Sleep structure and electroencephalographic spectral power of middle-aged or older adults: Normative values by age and sex in the Korean population
J Sleep Res. 2021 May 5:e13358. doi: 10.1111/jsr.13358. Online ahead of print.ABSTRACTThe fine structure of sleep electrocortical activity reflects health and disease. The current study provides normative data for sleep structure and electroencephalography (EEG) spectral power measures derived from overnight polysomnography (PSG) and examines the effect of age and sex among Korean middle-aged and older adults with or without obstructive sleep apnea (OSA). We analysed home PSG data from 1,153 adult participants of an ongoing population-based cohort study, the Korean Genome and Epidemiology Study. Sleep stages were visually ...
Source: Journal of Sleep Research - May 5, 2021 Category: Sleep Medicine Authors: Jee-Eun Yoon Dana Oh Inha Hwang Jung Ah Park Hee-Jin Im Seung Ku Lee Ki-Young Jung Seong-Ho Park Robert J Thomas Chol Shin Chang-Ho Yun Source Type: research

Poor sleep is associated with small hippocampal subfields in cognitively normal elderly individuals
J Sleep Res. 2021 May 5:e13362. doi: 10.1111/jsr.13362. Online ahead of print.ABSTRACTRecent studies demonstrated reduced hippocampal volumes in elderly healthy individuals who are cognitively normal but poor sleepers. The association between sleep quality and the pattern of volume loss across hippocampal subfields (HSs) is not well known. Thus, it is the focus of the present study. Sleep quality was self-assessed using the Pittsburgh Sleep Quality Index (PSQI). The HS volumes were measured using sub-millimetre in-plane resolution T2-weighted magnetic resonance imaging data. A total of 67 cognitively normal elderly individ...
Source: Journal of Sleep Research - May 5, 2021 Category: Sleep Medicine Authors: Che Liu Sang H Lee Rene Hernandez-Cardenache David Loewenstein Josefina Kather Noam Alperin Source Type: research

Modest sleep restriction does not influence steps, physical activity intensity or glucose tolerance in obese adults
J Sleep Res. 2021 May 5:e13381. doi: 10.1111/jsr.13381. Online ahead of print.ABSTRACTSleep restriction (SR) (
Source: Journal of Sleep Research - May 5, 2021 Category: Sleep Medicine Authors: Jay W Porter Ryan J Pettit-Mee Travis S Emerson Christina S McCrae Guido Lastra Victoria J Vieira-Potter Elizabeth J Parks Jill A Kanaley Source Type: research

Long-term changes in self-reported sleep quality and risk of chronic musculoskeletal pain: The HUNT Study
In conclusion, these findings indicate that people with long-term poor sleep quality have a markedly higher risk of chronic musculoskeletal pain and chronic widespread pain, compared with people who remain good sleep quality.PMID:33951260 | DOI:10.1111/jsr.13354 (Source: Journal of Sleep Research)
Source: Journal of Sleep Research - May 5, 2021 Category: Sleep Medicine Authors: Eivind Schjelderup Skarpsno Tom Ivar Lund Nilsen Knut Hagen Paul Jarle Mork Source Type: research

An investigation and replication of sleep-related cognitions, acceptance and behaviours as predictors of short- and long-term outcome in cognitive behavioural therapy for insomnia
The objectives were to investigate the potential for sleep-related behaviours, acceptance and cognitions to predict outcome (insomnia severity) of cognitive behavioural therapy for insomnia (CBT-I). Baseline and outcome data from four randomised controlled trials (n = 276) were used. Predictors were the Dysfunctional Beliefs and Attitudes about Sleep-10 (DBAS-10), Sleep-Related Behaviours Questionnaire (SRBQ), and Sleep Problems Acceptance Questionnaire (SPAQ), and empirically derived factors from a factor analysis combining all items at baseline (n = 835). Baseline values were used to predict post-treatment outcome, and p...
Source: Journal of Sleep Research - May 4, 2021 Category: Sleep Medicine Authors: Kerstin Blom Nils Hentati Isacsson Erik Forsell Ann Ros én Martin Kraepelien Susanna Jernel öv Viktor Kaldo Source Type: research

Determination of the sleep-wake pattern and feasibility of NREM/REM discrimination using the non-invasive piezoelectric system in rats
J Sleep Res. 2021 May 3:e13373. doi: 10.1111/jsr.13373. Online ahead of print.ABSTRACTThe piezoelectric cage-floor sensors have been used to successfully dissect sleep patterns in mice based on signal features related to respiration and body movements. We studied performance of the piezoelectric system to quantify the sleep-wake pattern in the rat over 7 days of recording compared with a visual electroencephalogram/electromyogram scoring, and under two light/dark (LD12:12 and LD16:8) photoperiods leading to change in the 24-hr sleep characteristics (N = 7 per group). The total sleep time (%/24 hr) over the 7 days recording...
Source: Journal of Sleep Research - May 4, 2021 Category: Sleep Medicine Authors: Th éo Vanneau Michael Quiquempoix Aur élie Trignol Charles Verdonk Pascal Van Beers Fabien Sauvet Danielle Gomez-Merino Mounir Chennaoui Source Type: research

Social jetlag, a novel predictor for high cardiovascular risk in blue-collar workers following permanent atypical work schedules
J Sleep Res. 2021 May 4:e13380. doi: 10.1111/jsr.13380. Online ahead of print.ABSTRACTCardiovascular diseases cause>4 million deaths each year in Europe alone. Preventive approaches that do not only consider individual risk factors but their interaction, such as the Systematic COronary Risk Evaluation (SCORE), are recommended by European guidelines. Increased cardiovascular risk is associated with shift-work, surely interacting with the concurrent conditions: disruption of sleep, unhealthy behaviours, and circadian misalignment. Social jetlag (SJL) has been proposed as a way to quantify circadian misalignment. We theref...
Source: Journal of Sleep Research - May 4, 2021 Category: Sleep Medicine Authors: Sara Gamboa Madeira C átia Reis Teresa Paiva Carlos Santos Moreira Paulo Nogueira Till Roenneberg Source Type: research

Cyclic alternating pattern in obstructive sleep apnea: A preliminary study
J Sleep Res. 2021 May 3:e13350. doi: 10.1111/jsr.13350. Online ahead of print.ABSTRACTObstructive sleep apnea is linked to cardiovascular disease, metabolic disorders and dementia. The precise nature of the association between respiratory events in obstructive sleep apnea, cortical or subcortical arousals, and cognitive, autonomic and oxidative stress consequences remains incompletely elucidated. Previous studies have aimed to understand the relationship between obstructive sleep apnea and arousal patterns, as defined by the cyclic alternating pattern, but results have been inconsistent, in part likely due to the presence ...
Source: Journal of Sleep Research - May 3, 2021 Category: Sleep Medicine Authors: Valentina Gnoni Panagis Drakatos Sean Higgins Iain Duncan Danielle Wasserman Renata Kabiljo Carlotta Mutti Peter Halasz Peter J Goadsby Guy D Leschziner Ivana Rosenzweig Source Type: research

Cyclic alternating pattern in obstructive sleep apnea: A preliminary study
J Sleep Res. 2021 May 3:e13350. doi: 10.1111/jsr.13350. Online ahead of print.ABSTRACTObstructive sleep apnea is linked to cardiovascular disease, metabolic disorders and dementia. The precise nature of the association between respiratory events in obstructive sleep apnea, cortical or subcortical arousals, and cognitive, autonomic and oxidative stress consequences remains incompletely elucidated. Previous studies have aimed to understand the relationship between obstructive sleep apnea and arousal patterns, as defined by the cyclic alternating pattern, but results have been inconsistent, in part likely due to the presence ...
Source: Journal of Sleep Research - May 3, 2021 Category: Sleep Medicine Authors: Valentina Gnoni Panagis Drakatos Sean Higgins Iain Duncan Danielle Wasserman Renata Kabiljo Carlotta Mutti Peter Halasz Peter J Goadsby Guy D Leschziner Ivana Rosenzweig Source Type: research

Grumpy face during adult sleep: A clue to negative emotion during sleep?
J Sleep Res. 2021 Apr 29:e13369. doi: 10.1111/jsr.13369. Online ahead of print.ABSTRACTNegative facial expressions and frowns have been studied (albeit more rarely than smiles) in fetus' and neonate' sleep, but they have not been investigated during adult sleep. Video polysomnography (including corrugator muscle electromyography and face-focussed video) was used to study negative facial expressions in sleeping adults, including healthy subjects and patients with/out parasomnia. Frowns were observed during sleep in 89/91 (97.8%) adults during normal (29 healthy subjects) and abnormal sleep (29 patients without parasomnia, 1...
Source: Journal of Sleep Research - April 30, 2021 Category: Sleep Medicine Authors: Jean-Baptiste Maranci Alexia Aussel Marie Vidailhet Isabelle Arnulf Source Type: research

Grumpy face during adult sleep: A clue to negative emotion during sleep?
J Sleep Res. 2021 Apr 29:e13369. doi: 10.1111/jsr.13369. Online ahead of print.ABSTRACTNegative facial expressions and frowns have been studied (albeit more rarely than smiles) in fetus' and neonate' sleep, but they have not been investigated during adult sleep. Video polysomnography (including corrugator muscle electromyography and face-focussed video) was used to study negative facial expressions in sleeping adults, including healthy subjects and patients with/out parasomnia. Frowns were observed during sleep in 89/91 (97.8%) adults during normal (29 healthy subjects) and abnormal sleep (29 patients without parasomnia, 1...
Source: Journal of Sleep Research - April 30, 2021 Category: Sleep Medicine Authors: Jean-Baptiste Maranci Alexia Aussel Marie Vidailhet Isabelle Arnulf Source Type: research

Grumpy face during adult sleep: A clue to negative emotion during sleep?
J Sleep Res. 2021 Apr 29:e13369. doi: 10.1111/jsr.13369. Online ahead of print.ABSTRACTNegative facial expressions and frowns have been studied (albeit more rarely than smiles) in fetus' and neonate' sleep, but they have not been investigated during adult sleep. Video polysomnography (including corrugator muscle electromyography and face-focussed video) was used to study negative facial expressions in sleeping adults, including healthy subjects and patients with/out parasomnia. Frowns were observed during sleep in 89/91 (97.8%) adults during normal (29 healthy subjects) and abnormal sleep (29 patients without parasomnia, 1...
Source: Journal of Sleep Research - April 30, 2021 Category: Sleep Medicine Authors: Jean-Baptiste Maranci Alexia Aussel Marie Vidailhet Isabelle Arnulf Source Type: research

ENIGMA-Sleep: Challenges, opportunities, and the road map
J Sleep Res. 2021 Apr 28:e13347. doi: 10.1111/jsr.13347. Online ahead of print.ABSTRACTNeuroimaging and genetics studies have advanced our understanding of the neurobiology of sleep and its disorders. However, individual studies usually have limitations to identifying consistent and reproducible effects, including modest sample sizes, heterogeneous clinical characteristics and varied methodologies. These issues call for a large-scale multi-centre effort in sleep research, in order to increase the number of samples, and harmonize the methods of data collection, preprocessing and analysis using pre-registered well-establishe...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Masoud Tahmasian Andr é Aleman Ole A Andreassen Zahra Arab Marion Baillet Francesco Benedetti Tom Bresser Joanna Bright Michael W L Chee Daphne Chylinski Wei Cheng Michele Deantoni Martin Dresler Simon B Eickhoff Claudia R Eickhoff Torbj ørn Elvsåshage Source Type: research

Obstructive sleep apnea in airline pilots during daytime sleep following overnight flights
J Sleep Res. 2021 Apr 28:e13375. doi: 10.1111/jsr.13375. Online ahead of print.ABSTRACTTo identify the vulnerability of recovery sleep, this study investigated the occurrence of obstructive sleep apnea during daytime sleep following overnight flights in healthy airline pilots. We conducted daytime polysomnography following a long-haul night-time flight in 103 pilots. The following variables were assessed: apnea-hypopnea index, respiratory disturbance index and oxygen desaturation index. Moderate-to-severe obstructive sleep apnea was defined as an apnea-hypopnea index ≥15. Seventy-three pilots (70.9%) with no known histo...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Su-Hyun Han Gun-Young Lee Wooseok Hyun Yongsung Kim Joung Soon Jang Source Type: research

Association between sleep disorders and osteoarthritis: A case-control study of 351,932 adults in the UK
This study aimed to analyse the association between sleep disorders and osteoarthritis in adults in the UK. This case-control study included patients aged ≥ 18 years who were diagnosed with osteoarthritis for the first time in one of 256 general practices in the UK between 1997 and 2016 (index date). Patients without osteoarthritis were matched (1:1) to those with osteoarthritis by sex, age, index year, general practice, observation time prior to index date (in years), obesity, injuries, and other types of arthritis. For patients without osteoarthritis, the index date was a randomly selected visit date between 1997 and ...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Louis Jacob Lee Smith Marcel Konrad Karel Kostev Source Type: research

ENIGMA-Sleep: Challenges, opportunities, and the road map
J Sleep Res. 2021 Apr 28:e13347. doi: 10.1111/jsr.13347. Online ahead of print.ABSTRACTNeuroimaging and genetics studies have advanced our understanding of the neurobiology of sleep and its disorders. However, individual studies usually have limitations to identifying consistent and reproducible effects, including modest sample sizes, heterogeneous clinical characteristics and varied methodologies. These issues call for a large-scale multi-centre effort in sleep research, in order to increase the number of samples, and harmonize the methods of data collection, preprocessing and analysis using pre-registered well-establishe...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Masoud Tahmasian Andr é Aleman Ole A Andreassen Zahra Arab Marion Baillet Francesco Benedetti Tom Bresser Joanna Bright Michael W L Chee Daphne Chylinski Wei Cheng Michele Deantoni Martin Dresler Simon B Eickhoff Claudia R Eickhoff Torbj ørn Elvsåshage Source Type: research

Obstructive sleep apnea in airline pilots during daytime sleep following overnight flights
J Sleep Res. 2021 Apr 28:e13375. doi: 10.1111/jsr.13375. Online ahead of print.ABSTRACTTo identify the vulnerability of recovery sleep, this study investigated the occurrence of obstructive sleep apnea during daytime sleep following overnight flights in healthy airline pilots. We conducted daytime polysomnography following a long-haul night-time flight in 103 pilots. The following variables were assessed: apnea-hypopnea index, respiratory disturbance index and oxygen desaturation index. Moderate-to-severe obstructive sleep apnea was defined as an apnea-hypopnea index ≥15. Seventy-three pilots (70.9%) with no known histo...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Su-Hyun Han Gun-Young Lee Wooseok Hyun Yongsung Kim Joung Soon Jang Source Type: research

Association between sleep disorders and osteoarthritis: A case-control study of 351,932 adults in the UK
This study aimed to analyse the association between sleep disorders and osteoarthritis in adults in the UK. This case-control study included patients aged ≥ 18 years who were diagnosed with osteoarthritis for the first time in one of 256 general practices in the UK between 1997 and 2016 (index date). Patients without osteoarthritis were matched (1:1) to those with osteoarthritis by sex, age, index year, general practice, observation time prior to index date (in years), obesity, injuries, and other types of arthritis. For patients without osteoarthritis, the index date was a randomly selected visit date between 1997 and ...
Source: Journal of Sleep Research - April 29, 2021 Category: Sleep Medicine Authors: Louis Jacob Lee Smith Marcel Konrad Karel Kostev Source Type: research

Daytime and nighttime smartphone use: A study of associations between multidimensional smartphone behaviours and sleep among 24,856 Danish adults
J Sleep Res. 2021 Apr 26:e13356. doi: 10.1111/jsr.13356. Online ahead of print.ABSTRACTThe around-the-clock smartphone use and its relation to disturbed sleep is a public health concern. The present study aimed to quantify the effects of different dimensions of smartphone behaviours (frequency of daytime use, problematic use, use before sleep and use during the sleep period) on disturbed sleep (sleep quality and sleep quantity) and to disentangle their inter-relationship in a large population-based sample of 24,856 Danish adults aged ≥16 years. Data come from the SmartSleep Experiment, which is a web-based survey carrie...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Agnete Skovlund Dissing Thea Otte Andersen Liv Nielsen N ørup Alice Clark Miriam Nejsum Naja Hulvej Rod Source Type: research

Unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems
J Sleep Res. 2021 Apr 26:e13363. doi: 10.1111/jsr.13363. Online ahead of print.ABSTRACTThe present study explored (a) the unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems and (b) the moderating role of the infant's sex on these unidirectional and bidirectional links. Mothers (N = 312) completed measures of depression symptoms at the third pregnancy trimester, and measures of depression symptoms and infant sleep problems at 2 weeks, and at 3 and 6 months postpartum. The findings revealed: (a) a main unidirectional link between maternal depression symptoms during the third...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Cl áudia Castro Dias B árbara Figueiredo Source Type: research

Nocturnal cerebral tissue oxygenation in lowlanders with chronic obstructive pulmonary disease travelling to an altitude of 2,590  m: Data from a randomised trial
J Sleep Res. 2021 Apr 26:e13365. doi: 10.1111/jsr.13365. Online ahead of print.ABSTRACTAltitude exposure induces hypoxaemia in patients with chronic obstructive pulmonary disease (COPD), particularly during sleep. The present study tested the hypothesis in patients with COPD staying overnight at high altitude that nocturnal arterial hypoxaemia is associated with impaired cerebral tissue oxygenation (CTO). A total of 35 patients with moderate-to-severe COPD, living at
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Michael Furian Deborah Flueck Philipp M Scheiwiller S éverine Mueller-Mottet Lorenz M Urner Tsogyal D Latshang Silvia Ulrich Konrad E Bloch Source Type: research

Daytime and nighttime smartphone use: A study of associations between multidimensional smartphone behaviours and sleep among 24,856 Danish adults
J Sleep Res. 2021 Apr 26:e13356. doi: 10.1111/jsr.13356. Online ahead of print.ABSTRACTThe around-the-clock smartphone use and its relation to disturbed sleep is a public health concern. The present study aimed to quantify the effects of different dimensions of smartphone behaviours (frequency of daytime use, problematic use, use before sleep and use during the sleep period) on disturbed sleep (sleep quality and sleep quantity) and to disentangle their inter-relationship in a large population-based sample of 24,856 Danish adults aged ≥16 years. Data come from the SmartSleep Experiment, which is a web-based survey carrie...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Agnete Skovlund Dissing Thea Otte Andersen Liv Nielsen N ørup Alice Clark Miriam Nejsum Naja Hulvej Rod Source Type: research

Unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems
J Sleep Res. 2021 Apr 26:e13363. doi: 10.1111/jsr.13363. Online ahead of print.ABSTRACTThe present study explored (a) the unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems and (b) the moderating role of the infant's sex on these unidirectional and bidirectional links. Mothers (N = 312) completed measures of depression symptoms at the third pregnancy trimester, and measures of depression symptoms and infant sleep problems at 2 weeks, and at 3 and 6 months postpartum. The findings revealed: (a) a main unidirectional link between maternal depression symptoms during the third...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Cl áudia Castro Dias B árbara Figueiredo Source Type: research

Nocturnal cerebral tissue oxygenation in lowlanders with chronic obstructive pulmonary disease travelling to an altitude of 2,590  m: Data from a randomised trial
J Sleep Res. 2021 Apr 26:e13365. doi: 10.1111/jsr.13365. Online ahead of print.ABSTRACTAltitude exposure induces hypoxaemia in patients with chronic obstructive pulmonary disease (COPD), particularly during sleep. The present study tested the hypothesis in patients with COPD staying overnight at high altitude that nocturnal arterial hypoxaemia is associated with impaired cerebral tissue oxygenation (CTO). A total of 35 patients with moderate-to-severe COPD, living at
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Michael Furian Deborah Flueck Philipp M Scheiwiller S éverine Mueller-Mottet Lorenz M Urner Tsogyal D Latshang Silvia Ulrich Konrad E Bloch Source Type: research

Daytime and nighttime smartphone use: A study of associations between multidimensional smartphone behaviours and sleep among 24,856 Danish adults
J Sleep Res. 2021 Apr 26:e13356. doi: 10.1111/jsr.13356. Online ahead of print.ABSTRACTThe around-the-clock smartphone use and its relation to disturbed sleep is a public health concern. The present study aimed to quantify the effects of different dimensions of smartphone behaviours (frequency of daytime use, problematic use, use before sleep and use during the sleep period) on disturbed sleep (sleep quality and sleep quantity) and to disentangle their inter-relationship in a large population-based sample of 24,856 Danish adults aged ≥16 years. Data come from the SmartSleep Experiment, which is a web-based survey carrie...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Agnete Skovlund Dissing Thea Otte Andersen Liv Nielsen N ørup Alice Clark Miriam Nejsum Naja Hulvej Rod Source Type: research

Unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems
J Sleep Res. 2021 Apr 26:e13363. doi: 10.1111/jsr.13363. Online ahead of print.ABSTRACTThe present study explored (a) the unidirectional and bidirectional links between maternal depression symptoms and infant sleep problems and (b) the moderating role of the infant's sex on these unidirectional and bidirectional links. Mothers (N = 312) completed measures of depression symptoms at the third pregnancy trimester, and measures of depression symptoms and infant sleep problems at 2 weeks, and at 3 and 6 months postpartum. The findings revealed: (a) a main unidirectional link between maternal depression symptoms during the third...
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Cl áudia Castro Dias B árbara Figueiredo Source Type: research

Nocturnal cerebral tissue oxygenation in lowlanders with chronic obstructive pulmonary disease travelling to an altitude of 2,590  m: Data from a randomised trial
J Sleep Res. 2021 Apr 26:e13365. doi: 10.1111/jsr.13365. Online ahead of print.ABSTRACTAltitude exposure induces hypoxaemia in patients with chronic obstructive pulmonary disease (COPD), particularly during sleep. The present study tested the hypothesis in patients with COPD staying overnight at high altitude that nocturnal arterial hypoxaemia is associated with impaired cerebral tissue oxygenation (CTO). A total of 35 patients with moderate-to-severe COPD, living at
Source: Journal of Sleep Research - April 26, 2021 Category: Sleep Medicine Authors: Michael Furian Deborah Flueck Philipp M Scheiwiller S éverine Mueller-Mottet Lorenz M Urner Tsogyal D Latshang Silvia Ulrich Konrad E Bloch Source Type: research

Sleep macroarchitecture but not obstructive sleep apnea is independently associated with cognitive function in only older men of a population-based cohort
J Sleep Res. 2021 Apr 22:e13370. doi: 10.1111/jsr.13370. Online ahead of print.ABSTRACTEvidence linking obstructive sleep apnea with cognitive dysfunction predominantly comes from clinical or select community samples. We investigated the independent cross-sectional association of obstructive sleep apnea and sleep macroarchitecture parameters with cognitive function in unselected community-dwelling middle-aged and older men. Four hundred and seventy-seven Florey Adelaide Male Ageing Study participants underwent successful home-based polysomnography. They also completed cognitive testing, including the inspection time task, ...
Source: Journal of Sleep Research - April 23, 2021 Category: Sleep Medicine Authors: Jesse L Parker Sarah L Appleton Yohannes A Melaku David Stevens Gary A Wittert Sean Martin Robert J Adams Andrew Vakulin Source Type: research

Sleep macroarchitecture but not obstructive sleep apnea is independently associated with cognitive function in only older men of a population-based cohort
J Sleep Res. 2021 Apr 22:e13370. doi: 10.1111/jsr.13370. Online ahead of print.ABSTRACTEvidence linking obstructive sleep apnea with cognitive dysfunction predominantly comes from clinical or select community samples. We investigated the independent cross-sectional association of obstructive sleep apnea and sleep macroarchitecture parameters with cognitive function in unselected community-dwelling middle-aged and older men. Four hundred and seventy-seven Florey Adelaide Male Ageing Study participants underwent successful home-based polysomnography. They also completed cognitive testing, including the inspection time task, ...
Source: Journal of Sleep Research - April 23, 2021 Category: Sleep Medicine Authors: Jesse L Parker Sarah L Appleton Yohannes A Melaku David Stevens Gary A Wittert Sean Martin Robert J Adams Andrew Vakulin Source Type: research

Sleep macroarchitecture but not obstructive sleep apnea is independently associated with cognitive function in only older men of a population-based cohort
J Sleep Res. 2021 Apr 22:e13370. doi: 10.1111/jsr.13370. Online ahead of print.ABSTRACTEvidence linking obstructive sleep apnea with cognitive dysfunction predominantly comes from clinical or select community samples. We investigated the independent cross-sectional association of obstructive sleep apnea and sleep macroarchitecture parameters with cognitive function in unselected community-dwelling middle-aged and older men. Four hundred and seventy-seven Florey Adelaide Male Ageing Study participants underwent successful home-based polysomnography. They also completed cognitive testing, including the inspection time task, ...
Source: Journal of Sleep Research - April 23, 2021 Category: Sleep Medicine Authors: Jesse L Parker Sarah L Appleton Yohannes A Melaku David Stevens Gary A Wittert Sean Martin Robert J Adams Andrew Vakulin Source Type: research

Cross-sectional case-control study of the relationships between pharyngeal compliance and heart rate variability indices in childhood obstructive sleep apnoea
The objectives of our present case-control study were to assess heart rate variability (HRV) indices in the stages of sleep in children with and without OSA to evaluate OSA-induced sleep HRV modifications and to assess whether increased collapsibility measured during wakefulness is associated with reduced sympathetic activity during non-rapid eye movement (NREM) sleep. Three groups of 15 children were matched by sex, age, z-score of body mass index and ethnicity: non-OSA (obstructive AHI [OAHI]
Source: Journal of Sleep Research - April 21, 2021 Category: Sleep Medicine Authors: Plamen Bokov Fran çois-Xavier Mauvais Am élia Madani Boris Matrot Michel Lecendreux Catherine Delano ë Eric Konofal Jorge Gallego Christophe Delclaux Source Type: research

Cross-sectional case-control study of the relationships between pharyngeal compliance and heart rate variability indices in childhood obstructive sleep apnoea
The objectives of our present case-control study were to assess heart rate variability (HRV) indices in the stages of sleep in children with and without OSA to evaluate OSA-induced sleep HRV modifications and to assess whether increased collapsibility measured during wakefulness is associated with reduced sympathetic activity during non-rapid eye movement (NREM) sleep. Three groups of 15 children were matched by sex, age, z-score of body mass index and ethnicity: non-OSA (obstructive AHI [OAHI]
Source: Journal of Sleep Research - April 21, 2021 Category: Sleep Medicine Authors: Plamen Bokov Fran çois-Xavier Mauvais Am élia Madani Boris Matrot Michel Lecendreux Catherine Delano ë Eric Konofal Jorge Gallego Christophe Delclaux Source Type: research

Cross-sectional case-control study of the relationships between pharyngeal compliance and heart rate variability indices in childhood obstructive sleep apnoea
The objectives of our present case-control study were to assess heart rate variability (HRV) indices in the stages of sleep in children with and without OSA to evaluate OSA-induced sleep HRV modifications and to assess whether increased collapsibility measured during wakefulness is associated with reduced sympathetic activity during non-rapid eye movement (NREM) sleep. Three groups of 15 children were matched by sex, age, z-score of body mass index and ethnicity: non-OSA (obstructive AHI [OAHI]
Source: Journal of Sleep Research - April 21, 2021 Category: Sleep Medicine Authors: Plamen Bokov Fran çois-Xavier Mauvais Am élia Madani Boris Matrot Michel Lecendreux Catherine Delano ë Eric Konofal Jorge Gallego Christophe Delclaux Source Type: research

Infant diurnal cortisol predicts sleep
J Sleep Res. 2021 Apr 18:e13357. doi: 10.1111/jsr.13357. Online ahead of print.ABSTRACTThe sleep-wake system is immature at birth and develops in parallel with the hypothalamic-pituitary-adrenal axis, a biological stress system of which the end product is cortisol. Perturbations in one system during infancy can maladaptively influence the maturation of the other system, leading to lasting sleep and cortisol system dysregulation and heightening the risk of enduring health problems. To better understand the early interplay between these systems, we examined whether actigraphy-derived measures of night-time sleep duration and...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Charu T Tuladhar Sophie Schwartz Ashley M St John Jerrold S Meyer Amanda R Tarullo Source Type: research

Unfair police treatment and sleep problems among a national sample of adults
J Sleep Res. 2021 Apr 18:e13353. doi: 10.1111/jsr.13353. Online ahead of print.ABSTRACTThe current study examines the associations between unfair police treatment and sleep quantity and quality among a nationally representative sample of adults from Wave V (years 2016-2018) of the National Longitudinal Study of Adolescent to Adult Health (N = 12,057). Furthermore, considering the documented negative associations between unjust police treatment and both physical and psychological wellbeing, we investigate whether this relationship is attenuated by aspects of general health and depressive symptoms. Findings demonstrate that ...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Alexander Testa Dylan B Jackson Daniel Semenza Source Type: research

Association between daytime napping and stroke: A dose-response meta-analysis
J Sleep Res. 2021 Apr 18:e13366. doi: 10.1111/jsr.13366. Online ahead of print.ABSTRACTDaytime napping is common in many regions around the world and has been an important part of people's daily life. Daytime napping has attracted increasing attention in recent years. Thus, we conducted a meta-analysis to evaluate the relationship between daytime napping and stroke, and help reduce the risk of stroke by improving living habits. The Embase, PubMed, Web of Science and PsycINFO databases were searched for cohort studies published before October 2020 and eight eligible studies with 524,408 participants and 5,875 stroke cases w...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Xiaolin Jin Hanze Chen Yuru Li Wenying Xu Xinxin Chen Li Tian Weiyu Teng Source Type: research

Infant diurnal cortisol predicts sleep
J Sleep Res. 2021 Apr 18:e13357. doi: 10.1111/jsr.13357. Online ahead of print.ABSTRACTThe sleep-wake system is immature at birth and develops in parallel with the hypothalamic-pituitary-adrenal axis, a biological stress system of which the end product is cortisol. Perturbations in one system during infancy can maladaptively influence the maturation of the other system, leading to lasting sleep and cortisol system dysregulation and heightening the risk of enduring health problems. To better understand the early interplay between these systems, we examined whether actigraphy-derived measures of night-time sleep duration and...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Charu T Tuladhar Sophie Schwartz Ashley M St John Jerrold S Meyer Amanda R Tarullo Source Type: research

Unfair police treatment and sleep problems among a national sample of adults
J Sleep Res. 2021 Apr 18:e13353. doi: 10.1111/jsr.13353. Online ahead of print.ABSTRACTThe current study examines the associations between unfair police treatment and sleep quantity and quality among a nationally representative sample of adults from Wave V (years 2016-2018) of the National Longitudinal Study of Adolescent to Adult Health (N = 12,057). Furthermore, considering the documented negative associations between unjust police treatment and both physical and psychological wellbeing, we investigate whether this relationship is attenuated by aspects of general health and depressive symptoms. Findings demonstrate that ...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Alexander Testa Dylan B Jackson Daniel Semenza Source Type: research

Association between daytime napping and stroke: A dose-response meta-analysis
J Sleep Res. 2021 Apr 18:e13366. doi: 10.1111/jsr.13366. Online ahead of print.ABSTRACTDaytime napping is common in many regions around the world and has been an important part of people's daily life. Daytime napping has attracted increasing attention in recent years. Thus, we conducted a meta-analysis to evaluate the relationship between daytime napping and stroke, and help reduce the risk of stroke by improving living habits. The Embase, PubMed, Web of Science and PsycINFO databases were searched for cohort studies published before October 2020 and eight eligible studies with 524,408 participants and 5,875 stroke cases w...
Source: Journal of Sleep Research - April 19, 2021 Category: Sleep Medicine Authors: Xiaolin Jin Hanze Chen Yuru Li Wenying Xu Xinxin Chen Li Tian Weiyu Teng Source Type: research

Sleep bruxism pulled between two worlds
J Sleep Res. 2021 Apr 15:e13351. doi: 10.1111/jsr.13351. Online ahead of print.NO ABSTRACTPMID:33860556 | DOI:10.1111/jsr.13351 (Source: Journal of Sleep Research)
Source: Journal of Sleep Research - April 16, 2021 Category: Sleep Medicine Authors: Emmanuel d'Incau Christophe Gauld Pierre Philip Jean-Arthur Micoulaud-Franchi Source Type: research

Sleep bruxism pulled between two worlds
J Sleep Res. 2021 Apr 15:e13351. doi: 10.1111/jsr.13351. Online ahead of print.NO ABSTRACTPMID:33860556 | DOI:10.1111/jsr.13351 (Source: Journal of Sleep Research)
Source: Journal of Sleep Research - April 16, 2021 Category: Sleep Medicine Authors: Emmanuel d'Incau Christophe Gauld Pierre Philip Jean-Arthur Micoulaud-Franchi Source Type: research

Sleep bruxism pulled between two worlds
J Sleep Res. 2021 Apr 15:e13351. doi: 10.1111/jsr.13351. Online ahead of print.NO ABSTRACTPMID:33860556 | DOI:10.1111/jsr.13351 (Source: Journal of Sleep Research)
Source: Journal of Sleep Research - April 16, 2021 Category: Sleep Medicine Authors: Emmanuel d'Incau Christophe Gauld Pierre Philip Jean-Arthur Micoulaud-Franchi Source Type: research

The natural history of insomnia: Does sleep extension differentiate between those that do and do not develop chronic insomnia?
J Sleep Res. 2021 Apr 14:e13342. doi: 10.1111/jsr.13342. Online ahead of print.ABSTRACTAccording to the "3P model" of insomnia, the variable that mediates the transition from acute insomnia (AI) to chronic insomnia is "sleep extension" (the behavioural tendency to expand sleep opportunity to compensate for sleep loss). In the present analysis, we sought to evaluate how time in bed (TIB) varies relative to the new onset of AI and chronic insomnia. A total of 1,248 subjects were recruited as good sleepers (GS). Subjects were monitored over 1 year with sleep diaries. State transitions were defined, a prior...
Source: Journal of Sleep Research - April 14, 2021 Category: Sleep Medicine Authors: Michael L Perlis Knashawn H Morales Ivan Vargas Donn A Posner Michael A Grandner Alexandria L Muench Mark W Seewald Nalaka S Gooneratne Jacqueline D Kloss Amy M Gencarelli Waliuddin S Khader Michael E Thase Jason G Ellis Source Type: research

The natural history of insomnia: Does sleep extension differentiate between those that do and do not develop chronic insomnia?
J Sleep Res. 2021 Apr 14:e13342. doi: 10.1111/jsr.13342. Online ahead of print.ABSTRACTAccording to the "3P model" of insomnia, the variable that mediates the transition from acute insomnia (AI) to chronic insomnia is "sleep extension" (the behavioural tendency to expand sleep opportunity to compensate for sleep loss). In the present analysis, we sought to evaluate how time in bed (TIB) varies relative to the new onset of AI and chronic insomnia. A total of 1,248 subjects were recruited as good sleepers (GS). Subjects were monitored over 1 year with sleep diaries. State transitions were defined, a prior...
Source: Journal of Sleep Research - April 14, 2021 Category: Sleep Medicine Authors: Michael L Perlis Knashawn H Morales Ivan Vargas Donn A Posner Michael A Grandner Alexandria L Muench Mark W Seewald Nalaka S Gooneratne Jacqueline D Kloss Amy M Gencarelli Waliuddin S Khader Michael E Thase Jason G Ellis Source Type: research

Usefulness of sleep events detection using a wrist worn peripheral arterial tone signal device (WatchPAT ™) in a population at low risk of obstructive sleep apnea
J Sleep Res. 2021 Apr 12:e13352. doi: 10.1111/jsr.13352. Online ahead of print.ABSTRACTDue to the high prevalence of obstructive sleep apnea (OSA), it is recommended to use in-laboratory polysomnography (PSG) or a home sleep apnea test (HSAT) in uncomplicated adult subjects at high risk of OSA. The aims of the present study were to compare a HSAT device, a wrist worn peripheral arterial tone signal device (WatchPAT™-200 [WP]) with PSG and respiratory polygraphy (RP) in a low-risk population of OSA. A total of 47 adult subjects at low risk of OSA were simultaneously examined with the three different approaches in a si...
Source: Journal of Sleep Research - April 12, 2021 Category: Sleep Medicine Authors: Pasquale Tondo Riccardo Drigo Giulia Scioscia Andrea Ballarin Emanuela Rossi Ariel Fabian Floriani Alessia Pauletti Maria Pia Foschino Barbaro Donato Lacedonia Source Type: research

Usefulness of sleep events detection using a wrist worn peripheral arterial tone signal device (WatchPAT ™) in a population at low risk of obstructive sleep apnea
J Sleep Res. 2021 Apr 12:e13352. doi: 10.1111/jsr.13352. Online ahead of print.ABSTRACTDue to the high prevalence of obstructive sleep apnea (OSA), it is recommended to use in-laboratory polysomnography (PSG) or a home sleep apnea test (HSAT) in uncomplicated adult subjects at high risk of OSA. The aims of the present study were to compare a HSAT device, a wrist worn peripheral arterial tone signal device (WatchPAT™-200 [WP]) with PSG and respiratory polygraphy (RP) in a low-risk population of OSA. A total of 47 adult subjects at low risk of OSA were simultaneously examined with the three different approaches in a si...
Source: Journal of Sleep Research - April 12, 2021 Category: Sleep Medicine Authors: Pasquale Tondo Riccardo Drigo Giulia Scioscia Andrea Ballarin Emanuela Rossi Ariel Fabian Floriani Alessia Pauletti Maria Pia Foschino Barbaro Donato Lacedonia Source Type: research

Impact of temperature on obstructive sleep apnoea in three different climate zones of Europe: Data from the European Sleep Apnoea Database (ESADA)
J Sleep Res. 2021 Apr 11:e13315. doi: 10.1111/jsr.13315. Online ahead of print.ABSTRACTRecent studies indicate that ambient temperature may modulate obstructive sleep apnoea (OSA) severity. However, study results are contradictory warranting more investigation in this field. We analysed 19,293 patients of the European Sleep Apnoea Database (ESADA) cohort with restriction to the three predominant climate zones according to the Köppen-Geiger climate classification: Cfb (warm temperature, fully humid, warm summer), Csa (warm temperature, summer dry, hot summer), and Dfb (snow, fully humid, warm summer). Average outside t...
Source: Journal of Sleep Research - April 11, 2021 Category: Sleep Medicine Authors: Richard Staats S ébastien Bailly Maria Rosaria Bonsignore Silke Ryan Renata L Riha Sophia Schiza Johan Verbraecken Ozen K Basoglu Tarja Saaresranta Athanasia Pataka Ondrej Ludka Carolina Lombardi Jan Anders Hedner Ludger Grote European Sleep Apnoea Datab Source Type: research

Impact of temperature on obstructive sleep apnoea in three different climate zones of Europe: Data from the European Sleep Apnoea Database (ESADA)
J Sleep Res. 2021 Apr 11:e13315. doi: 10.1111/jsr.13315. Online ahead of print.ABSTRACTRecent studies indicate that ambient temperature may modulate obstructive sleep apnoea (OSA) severity. However, study results are contradictory warranting more investigation in this field. We analysed 19,293 patients of the European Sleep Apnoea Database (ESADA) cohort with restriction to the three predominant climate zones according to the Köppen-Geiger climate classification: Cfb (warm temperature, fully humid, warm summer), Csa (warm temperature, summer dry, hot summer), and Dfb (snow, fully humid, warm summer). Average outside t...
Source: Journal of Sleep Research - April 11, 2021 Category: Sleep Medicine Authors: Richard Staats S ébastien Bailly Maria Rosaria Bonsignore Silke Ryan Renata L Riha Sophia Schiza Johan Verbraecken Ozen K Basoglu Tarja Saaresranta Athanasia Pataka Ondrej Ludka Carolina Lombardi Jan Anders Hedner Ludger Grote European Sleep Apnoea Datab Source Type: research

Heart rate detection by Fitbit ChargeHR < sup > ™ < /sup > : A validation study versus portable polysomnography
The objective of the present study was to investigate the reliability of pulse photoplethysmographic detection by the Fitbit ChargeHR™ (FBCHR, Fitbit Inc.) in a natural setting of continuous recording across vigilance states. To fulfil this aim, concurrent portable polysomnographic (pPSG) and the Fitbit's photoplethysmographic data were collected from a group of 25 healthy young adults, for ≥12 hr. The pPSG-derived HR was automatically computed and visually verified for each 1-min epoch, while the FBCHR HR measurements were downloaded from the application programming interface provided by the manufacturer. The FBC...
Source: Journal of Sleep Research - April 10, 2021 Category: Sleep Medicine Authors: Davide Benedetti Umberto Olcese Paolo Frumento Andrea Bazzani Simone Bruno Paola d'Ascanio Michelangelo Maestri Enrica Bonanni Ugo Faraguna Source Type: research

Heart rate detection by Fitbit ChargeHR < sup > ™ < /sup > : A validation study versus portable polysomnography
The objective of the present study was to investigate the reliability of pulse photoplethysmographic detection by the Fitbit ChargeHR™ (FBCHR, Fitbit Inc.) in a natural setting of continuous recording across vigilance states. To fulfil this aim, concurrent portable polysomnographic (pPSG) and the Fitbit's photoplethysmographic data were collected from a group of 25 healthy young adults, for ≥12 hr. The pPSG-derived HR was automatically computed and visually verified for each 1-min epoch, while the FBCHR HR measurements were downloaded from the application programming interface provided by the manufacturer. The FBC...
Source: Journal of Sleep Research - April 10, 2021 Category: Sleep Medicine Authors: Davide Benedetti Umberto Olcese Paolo Frumento Andrea Bazzani Simone Bruno Paola d'Ascanio Michelangelo Maestri Enrica Bonanni Ugo Faraguna Source Type: research