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https://www.readbyqxmd.com/read/29040758/linking-light-exposure-and-subsequent-sleep-a-field-polysomnography-study-in-humans
#1
Emma J Wams, Tom Woelders, Irene Marring, Laura van Rosmalen, Domien G M Beersma, Marijke C M Gordijn, Roelof A Hut
Study objectives: To determine the effect of light exposure on subsequent sleep characteristics under ambulatory field conditions. Methods: Twenty healthy participants were fitted with ambulatory PSG and wrist-actigraphs to assess light exposure, rest-activity, sleep quality, timing and architecture. Laboratory salivary dim-light melatonin onset (DLMO) was analyzed to determine endogenous circadian phase. Results: Later circadian clock phase was associated with lower intensity (R2=0...
October 11, 2017: Sleep
https://www.readbyqxmd.com/read/29040275/nocturnal-sleep-mediates-the-relationship-between-morningness-eveningness-preference-and-the-sleep-architecture-of-afternoon-naps-in-university-students
#2
Tzu-Yin Lee, Pi-Chen Chang, Ing-Jy Tseng, Min-Huey Chung
The present study investigated the parameters of nocturnal sleep that mediate the relationship between morningness-eveningness preference and the sleep architecture of naps in university students. This study had a cross-sectional, descriptive correlational design. The sleep architecture of 52 students invited to take an afternoon nap in the laboratory was recorded. The morningness-eveningness questionnaire (MEQ) was used to evaluate morningness-eveningness preference. An actigraph was used to collect students' nighttime sleep data in the week preceding the study...
2017: PloS One
https://www.readbyqxmd.com/read/29035666/examination-of-risk-for-sleep-disordered-breathing-among-college-football-players
#3
Bailey Peck, Timothy Renzi, Hannah Peach, Jane Gaultney, Joseph S Marino
CONTEXT: Professional football linemen are at risk for sleep disordered breathing (SDB) compared to other types of athletes. It is currently unknown whether collegiate football linemen display a similar risk profile. OBJECTIVE: 1) Determine for the first time whether collegiate football linemen show risk for SDB, and 2) Test the hypothesis that SDB risk is higher in collegiate football linemen compared to an athletic comparison group. DESIGN: Descriptive laboratory study...
October 16, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29031760/impact-of-diagnosing-and-treating-obstructive-sleep-apnea-on-healthcare-utilization
#4
Robert J Walter, Scott I Hagedorn, Christopher J Lettieri
PURPOSE: Obstructive sleep apnea (OSA) contributes to an increased risk for multiple co-morbidities and decreased quality of life. As a result, OSA patients may have higher usage of healthcare resources which can be mitigated with effective treatment. This study evaluates changes in healthcare utilization (HCU) following the initiation of therapy for OSA. METHODS: We conducted a retrospective study of newly diagnosed OSA patients. To assess total HCU, we incorporated the sum total of outpatient clinic encounters, laboratory tests, and medication prescriptions into a composite HCU score...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29029340/circadian-phase-and-phase-angle-disorders-in-primary-insomnia
#5
Erin E Flynn-Evans, Julia A Shekleton, Belinda Miller, Lawrence J Epstein, Douglas Kirsch, Lauren A Brogna, Liza M Burke, Erin Bremer, Jade M Murray, Philip Gehrman, Shantha M W Rajaratnam, Steven W Lockley
Objectives: We aimed to identify the prevalence of circadian phase and phase angle abnormalities in patients with insomnia. Methods: We conducted a cross-sectional, multicenter study at three sleep laboratories in the United States and Australia. Patients with insomnia and healthy control participants completed a sleep log for seven days. Circadian phase was assessed from salivary Dim Light Melatonin Onset (DLMO) time during a 12-hour laboratory visit. Results: Seventy-nine patients meeting the Research Diagnostic Criteria for Primary, Psychophysiological, Paradoxical, and/or Idiopathic Childhood Insomnia (46F, 35...
October 3, 2017: Sleep
https://www.readbyqxmd.com/read/29029309/limited-efficacy-of-caffeine-and-recovery-costs-during-and-following-5-days-of-chronic-sleep-restriction-caffeine-and-sleep-restriction
#6
Tracy Jill Doty, Christine J So, Elizabeth M Bergman, Sara K Trach, Ruthie H Ratcliffe, Angela M Yarnell, Vincent F Capaldi, James E Moon, Thomas J Balkin, Phillip J Quartana
Objectives: To investigate the effects of caffeine on psychomotor vigilance and sleepiness during sleep restriction and following subsequent recovery sleep. Methods: Participants were N=48 healthy good sleepers. All participants underwent 5 nights of sleep satiation [time-in-bed (TIB): 10 hrs], followed by 5 nights of sleep restriction (TIB: 5 hrs), and 3 nights of recovery sleep (TIB: 8 hrs) in a sleep laboratory. Caffeine (200 mg) or placebo was administered in the form of chewing gum at 0800 and 1200 hrs each day during the sleep restriction phase...
October 5, 2017: Sleep
https://www.readbyqxmd.com/read/29029252/time-on-task-effect-during-sleep-deprivation-in-healthy-young-adults-is-modulated-by-dopamine-transporter-genotype
#7
Brieann C Satterfield, Jonathan P Wisor, Michelle A Schmidt, Hans P A Van Dongen
Study Objectives: The time-on-task (TOT) effect and total sleep deprivation (TSD) have similar effects on neurobehavioral functioning, including increased performance instability during tasks requiring sustained attention. The TOT effect is exacerbated by TSD, suggesting potentially overlapping mechanisms. We probed these mechanisms by investigating genotype-phenotype relationships on psychomotor vigilance test (PVT) performance for three a-priori selected genes previously linked to the TOT effect and/or TSD: DAT1, COMT, and TNFα...
October 4, 2017: Sleep
https://www.readbyqxmd.com/read/29027646/prevalence-of-obstructive-sleep-apnea-among-obese-toddlers-and-preschool-children
#8
Saadoun Bin-Hasan, Sherri Katz, Zoe Nugent, Joy Nehme, Zihang Lu, Abdullah Khayat, Suhail Al-Saleh, Reshma Amin, Indra Narang
BACKGROUND: Obstructive sleep apnea (OSA) is a common disorder estimated at 1-5% in the school-aged children. With the obesity prevalence reaching staggering rates globally, OSA in obese adolescents is estimated to be 4-5-folds higher than their lean peers. There is a paucity of data regarding obesity-related OSA in children 6 years and less. This is particularly relevant as OSA is associated with neurocognitive deficits. The aim of this study is to evaluate the prevalence of OSA among obese toddlers and preschool children and further to determine what other factors may be associated with the presence of OSA...
October 13, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29027326/daytime-periodic-breathing-during-short-term-laboratory-recordings-in-heart-failure-patients-the-iceberg-tip-of-central-sleep-apnoea
#9
Maria Teresa La Rovere, Roberto Maestri, Elena Robbi, Angelo Caporotondi, Giampaolo Guazzotti, Egidio Traversi, Gian Domenico Pinna
No abstract text is available yet for this article.
October 12, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29018317/jake%C3%A2-multimodal-data-capture-system-insights-from-an-observational-study-of-autism-spectrum-disorder
#10
Seth L Ness, Nikolay V Manyakov, Abigail Bangerter, David Lewin, Shyla Jagannatha, Matthew Boice, Andrew Skalkin, Geraldine Dawson, Yvette M Janvier, Matthew S Goodwin, Robert Hendren, Bennett Leventhal, Frederick Shic, Walter Cioccia, Gahan Pandina
Objective: To test usability and optimize the Janssen Autism Knowledge Engine (JAKE®) system's components, biosensors, and procedures used for objective measurement of core and associated symptoms of autism spectrum disorder (ASD) in clinical trials. Methods: A prospective, observational study of 29 children and adolescents with ASD using the JAKE system was conducted at three sites in the United States. This study was designed to establish the feasibility of the JAKE system and to learn practical aspects of its implementation...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29017480/longitudinal-assessment-of-daily-activity-patterns-on-weight-change-after-involuntary-job-loss-the-adapt-study-protocol
#11
Patricia L Haynes, Graciela E Silva, George W Howe, Cynthia A Thomson, Emily A Butler, Stuart F Quan, Duane Sherrill, Molly Scanlon, Darlynn M Rojo-Wissar, Devan N Gengler, David A Glickenstein
BACKGROUND: The World Health Organization has identified obesity as one of the most visible and neglected public health problems worldwide. Meta-analytic studies suggest that insufficient sleep increases the risk of developing obesity and related serious medical conditions. Unfortunately, the nationwide average sleep duration has steadily declined over the last two decades with 25% of U.S. adults reporting insufficient sleep. Stress is also an important indirect factor in obesity, and chronic stress and laboratory-induced stress negatively impact sleep...
October 10, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28993495/sleep-research-goes-wild-new-methods-and-approaches-to-investigate-the-ecology-evolution-and-functions-of-sleep
#12
REVIEW
Niels C Rattenborg, Horacio O de la Iglesia, Bart Kempenaers, John A Lesku, Peter Meerlo, Madeleine F Scriba
Despite being a prominent aspect of animal life, sleep and its functions remain poorly understood. As with any biological process, the functions of sleep can only be fully understood when examined in the ecological context in which they evolved. Owing to technological constraints, until recently, sleep has primarily been examined in the artificial laboratory environment. However, new tools are enabling researchers to study sleep behaviour and neurophysiology in the wild. Here, we summarize the various methods that have enabled sleep researchers to go wild, their strengths and weaknesses, and the discoveries resulting from these first steps outside the laboratory...
November 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28992830/perfectionism-and-polysomnography-determined-markers-of-poor-sleep
#13
Anna F Johann, Elisabeth Hertenstein, Simon D Kyle, Chiara Baglioni, Bernd Feige, Christoph Nissen, Dieter Riemann, Kai Spiegelhalder
STUDY OBJECTIVES: Perfectionism has been suggested to represent a predisposing factor for poor sleep. However, previous studies have relied on self-reported measures. The association between perfectionism and poor sleep measured by polysomnography (PSG) warrants further investigation. METHODS: The current retrospective exploratory study used the Frost Multidimensional Perfectionism Scale and PSG in an unselected sample of 334 consecutive sleep laboratory patients (140 males, 194 females, 44...
October 4, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28992827/improving-sleep-quality-assessment-using-wearable-sensors-by-including-information-from-postural-sleep-position-changes-and-body-acceleration-a-comparison-of-chest-worn-sensors-wrist-actigraphy-and-polysomnography
#14
Javad Razjouyan, Hyoki Lee, Sairam Parthasarathy, Jane Mohler, Amir Sharafkhaneh, Bijan Najafi
STUDY OBJECTIVES: To improve sleep quality assessment using a single chest-worn sensor by extracting body acceleration and sleep position changes. METHODS: Sleep patterns of 21 participants (50.8 ± 12.8 years, 47.8% female) with self-reported sleep problems were simultaneously recorded using a chest sensor (Chest), an Actiwatch (Wrist), and polysomnography (PSG) during overnight sleep laboratory assessment. An algorithm for Chest was developed to detect sleep/wake epochs based on body acceleration and sleep position/postural changes data, which were then used to estimate sleep parameters of interest...
October 4, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28977563/short-sleep-duration-increases-metabolic-impact-in-healthy-adults-a-population-based-cohort-study
#15
Han-Bing Deng, Tony Tam, Benny Chung-Ying Zee, Roger Yat-Nork Chung, Xuefen Su, Lei Jin, Ta-Chien Chan, Ly-Yun Chang, Eng-Kiong Yeoh, Xiang Qian Lao
Objectives: The metabolic impact of inadequate sleep has not been determined in healthy individuals outside laboratories. This study aims to investigate the impact of sleep duration on five metabolic syndrome components in a healthy adult cohort. Methods: A total of 162121 adults aged 20-80 years (men 47.4%) of the MJ Health Database, who were not obese and free from major diseases, were recruited and followed up from 1996 to 2014. Sleep duration and insomnia symptoms were assessed by a self-administered questionnaire...
July 22, 2017: Sleep
https://www.readbyqxmd.com/read/28973202/laboratory-polysomnography-or-limited-channel-sleep-studies-for-obstructive-sleep-apnea
#16
Ching Li Chai-Coetzer, Nigel McArdle, R Doug McEvoy
No abstract text is available yet for this article.
October 3, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28973201/laboratory-polysomnography-or-limited-channel-sleep-studies-for-obstructive-sleep-apnea
#17
Cathy Goldstein
No abstract text is available yet for this article.
October 3, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28973052/does-sleep-bruxism-contribute-to-headache-related-disability-after-mild-traumatic-brain-injury-a-case-control-study
#18
Yoshitaka Suzuki, Caroline Arbour, Samar Khoury, Jean-François Giguère, Ronald Denis, Louis De Beaumont, Gilles J Lavigne
AIMS: To explore whether traumatic brain injury (TBI) patients have a higher prevalence of sleep bruxism (SB) and a higher level of orofacial muscle activity than healthy controls and whether orofacial muscle activity in the context of mild TBI (mTBI) increases the risk for headache disability. METHODS: Sleep laboratory recordings of 24 mTBI patients (15 males, 9 females; mean age ± standard deviation [SD]: 38 ± 11 years) and 20 healthy controls (8 males, 12 females; 31 ± 9 years) were analyzed...
October 3, 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28966731/clinicals-and-upper-airway-characteristics-in-obese-children-with-obstructive-sleep-apnea
#19
Eli O Martinelli, Fernanda Louise M Haddad, Renato Stefanini, Gustavo A Moreira, Priscila B Rapoport, Luis Carlos Gregório, Sérgio Tufik, Lia Rita A Bittencourt
INTRODUCTION: Obesity is a factor that is strongly related to the occurrence of obstructive sleep apnea (OSA) in adults, although this association remains controversial for children. OBJECTIVE: The aim of this study was to compare the clinical and upper airway charactheristics, obtained by questionnaires, physical examination and laboratory tests, among obese children with and without OSA. METHOD: This was aprospective cohort study. 44 obese children (body mass index above the 95th percentile) were included in the study...
January 2017: Sleep Science
https://www.readbyqxmd.com/read/28958055/familial-risk-for-insomnia-is-associated-with-abnormal-cortisol-response-to-stress
#20
Christopher L Drake, Philip Cheng, David M Almeida, Thomas Roth
Objectives: Abnormalities in the stress system have been implicated in insomnia. However, studies examining physiological stress regulation in insomnia have not consistently detected differences in the hypothalamic-pituitary-adrenal (HPA)-axis response to stress. One explanation may be that deficits in the stress system are associated specifically with a biological vulnerability to insomnia rather than the phenotypic expression of insomnia. To examine stress response as a function of vulnerability to insomnia, this study tested response to the Trier Social Stress Test in a sample of healthy sleepers with varying familial risk for insomnia...
August 24, 2017: Sleep
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