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https://www.readbyqxmd.com/read/28210999/computational-cognitive-modeling-of-the-temporal-dynamics-of-fatigue-from-sleep-loss
#1
Matthew M Walsh, Glenn Gunzelmann, Hans P A Van Dongen
Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought - Rational (ACT-R) cognitive architecture and posits that fatigue decreases the utility of candidate actions leading to microlapses in cognitive processing...
February 16, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28209264/patient-travel-for-bariatric-surgery-does-distance-matter
#2
J Hunter Mehaffey, Alex D Michaels, Mathew G Mullen, Max O Meneveau, John R Pender, Peter T Hallowell
BACKGROUND: Increasingly, patients are faced with greater travel distances to undergo bariatric surgery at high-volume centers. OBJECTIVES: This study sought to evaluate the impact of travel distance on access to care and outcomes after bariatric surgery. SETTING: Patients who underwent Roux-en-Y gastric bypass at an academic bariatric surgery center from 1985 to 2004 were examined and stratified by patient travel distance. METHODS: Univariate analyses were performed for preoperative risk factors, 30-day complications, and long-term (10-yr) weight loss between "local," defined as<1 hour of travel time, and "regional," defined as>1 hour of travel time...
December 28, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28207464/modified-mallampati-score-improves-specificity-of-stop-bang-questionnaire-for-obstructive-sleep-apnea
#3
Mehmet Ozgur Avincsal, Mehmet Emre Dinc, Seckin Ulusoy, Abdullah Dalgic, Cengiz Ozdemir, Omer Necati Develioglu
BACKGROUND: An accurate, clinical screening tool for obstructive sleep apnea (OSA) that identifies patients for further diagnostic testing would assist in the diagnosis of this comorbidity. One example, the STOP-BANG questionnaire (SBQ), has been validated as a screening tool with high sensitivity. However, its specificity may result in a high false-positive rate. The aim of this study to determine if addition of the Modified Mallampati score to the SBQ improves its specificity. METHODS: The authors studied 162 patients referred to the Sleep Disorders Clinic at Yedikule Chest Disease Education and Research Hospital...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28195345/in-vivo-measurements-of-human-neck-skin-elasticity-using-mri-and-finite-element-modeling
#4
Yunqiang An, Changjin Ji, Yong Li, Jianxia Wang, Xinyue Zhang, Yaqi Huang
PURPOSE: The assessment of mechanical properties of the human skin is very important in investigating the mechanism of obstructive sleep apnea, a common disorder characterized by repetitive collapse and obstruction of the upper airway during sleep. In this study, a unique method, combining magnetic resonance imaging (MRI) and finite element modeling (FEM), was developed to obtain the value of the in vivo elastic modulus of the neck skin. MEHTHOD: A total of 22 subjects, 16 males and 6 females, were recruited to participate in the MRI studies...
February 13, 2017: Medical Physics
https://www.readbyqxmd.com/read/28190825/excessive-game-playing-is-associated-with-poor-toothbrushing-behavior-among-athletic-children-a-cross-sectional-study-in-miyagi-japan
#5
Masahiro Tsuchiya, Haruki Momma, Takuya Sekiguchi, Kaoru Kuroki, Kenji Kanazawa, Makoto Watanabe, Yoshihiro Hagiwara, Ryoichi Nagatomi
Dental problems among athletes have been cautioned due to negative impacts not only on their oral health but also on athletic performance. Acquirement of appropriate oral health behavior mainly composed of toothbrushing in childhood can be one of the most important strategies for advancing children's athletic possibilities. Although habits of screen viewing, including game playing, and TV viewing have direct impacts on children's health and behavioral development, little is known about the association between these habits and toothbrushing frequency...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28177712/investigating-human-skeletal-muscle-physiology-with-unilateral-exercise-models-when-one-limb-is-more-powerful-than-two
#6
Martin J MacInnis, Chris McGlory, Martin J Gibala, Stuart M Phillips
Direct sampling of human skeletal muscle using the needle biopsy technique can facilitate insight into the biochemical and histological responses resulting from changes in exercise or feeding. However, the muscle biopsy procedure is invasive, and analyses are often expensive, which places pragmatic restraints on sample sizes. The unilateral exercise model can serve to increase statistical power and reduce the time and cost of a study. With this approach, two limbs of a participant are randomized to one of two treatments that can be applied almost concurrently or sequentially depending on the nature of the intervention...
January 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28169194/gln223arg-polymorphism-in-the-caucasian-population-and-pro1019pro-polymorphism-in-the-chinese-population-are-risk-factors-for-osas-an-updated-meta-analysis-of-1159-subjects
#7
B Xu, J Liu, T Li, S Liu
BACKGROUND: We conducted a meta-analysis of published literature to identify the correlation between leptin receptor gene polymorphisms and the risk of obstructive sleep apnea syndrome (OSAS). METHODS: Five different single nucleotide polymorphisms (SNPs) were studied. Only Gln223Arg and Pro1019Pro had multiple studies. Nine studies focused on the correlation between Gln223Arg and Pro1019Pro polymorphisms and OSAS risk. Fixed-effects model or random-effects model was used to calculate the pooled odds ratio (ORs) and its corresponding 95% confidence interval (95% CI)...
February 3, 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28168335/at-home-pulse-oximetry-in-children-undergoing-adenotonsillectomy-for-obstructive-sleep-apnea
#8
Martino Pavone, Nicola Ullmann, Elisabetta Verrillo, Giancarlo De Vincentiis, Emanuela Sitzia, Renato Cutrera
: Nocturnal pulse oximetry has a high positive predictive value for polysomnographically diagnosed obstructive sleep apnoea (OSA) in children. When significant adenotonsillar hypertrophy is diagnosed, adenotonsillectomy (T&A) represents a common treatment for OSA in children. We investigated the role of pulse oximetry in predicting those patients, referred for suspected OSA, who subsequently needed T&A. At-home nocturnal pulse oximetry was performed on 380 children (65.7% males), median age 4...
February 6, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28167303/psychological-and-lifestyle-factors-that-influence-the-serial-reporting-of-post-concussive-like-symptoms-in-a-non-concussed-population
#9
Arun Prasad Balasundaram, Josie Athens, Anthony Gerard Schneiders, Paul McCrory, Stephen John Sullivan
BACKGROUND: Symptoms related to concussion are generally found to be non-specific in nature as they are also reported by non-concussed individuals. What is currently not known is whether the symptoms vary over time, and whether they are also influenced by a multitude of factors. OBJECTIVE: To investigate the potential influence of psychological, lifestyle, and situational factors on the change in postconcussion-like symptoms reported over seven consecutive days in a cohort of normal individuals...
February 3, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28165489/the-interrelated-effect-of-sleep-and-learning-in-dogs-canis-familiaris-an-eeg-and-behavioural-study
#10
Anna Kis, Sára Szakadát, Márta Gácsi, Enikő Kovács, Péter Simor, Csenge Török, Ferenc Gombos, Róbert Bódizs, József Topál
The active role of sleep in memory consolidation is still debated, and due to a large between-species variation, the investigation of a wide range of different animal species (besides humans and laboratory rodents) is necessary. The present study applied a fully non-invasive methodology to study sleep and memory in domestic dogs, a species proven to be a good model of human awake behaviours. Polysomnography recordings performed following a command learning task provide evidence that learning has an effect on dogs' sleep EEG spectrum...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28159703/cognitive-behavioral-therapy-for-insomnia-in-stable-heart-failure-protocol-for-a-randomized-controlled-trial
#11
Nancy S Redeker, Andrea K Knies, Christopher Hollenbeak, H Klar Yaggi, John Cline, Laura Andrews, Daniel Jacoby, Anna Sullivan, Meghan O'Connell, Joanne Iennaco, Lisa Finoia, Sangchoon Jeon
BACKGROUND: Chronic insomnia is associated with disabling symptoms and decrements in functional performance. It may contribute to the development of heart failure (HF) and incident mortality. In our previous work, cognitive-behavioral therapy for insomnia (CBT-I), compared to HF self-management education, provided as an attention control condition, was feasible, acceptable, and had large effects on insomnia and fatigue among HF patients. OBJECTIVES: The purpose of this randomized controlled trial (RCT) is to evaluate the sustained effects of group CBT-I compared with HF self-management education (attention control) on insomnia severity, sleep characteristics, daytime symptoms, symptom clusters, functional performance, and health care utilization among patients with stable HF...
January 31, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28156163/post-infarct-sleep-disruption-and-its-relation-to-cardiac-remodeling-in-a-rat-model-of-myocardial-infarction
#12
Marjan Aghajani, Mahdieh Faghihi, Alireza Imani, Mohammad Reza Vaez Mahdavi, Abbas Shakoori, Tayebeh Rastegar, Hoda Parsa, Saman Mehrabi, Fatemeh Moradi, Ehsan Kazemi Moghaddam
Sleep disruption after myocardial infarction (MI) by affecting ubiquitin-proteasome system (UPS) is thought to contribute to myocardial remodeling and progressive worsening of cardiac function. The aim of current study was to test the hypothesis about the increased risk of developing heart failure due to experience of sleep restriction (SR) after MI. Male Wistar rats (n = 40) were randomly assigned to four experimental groups: (1) Sham, (2) MI, (3) MI and SR (MI + SR) (4) Sham and SR (Sham + SR). MI was induced by permanent ligation of left anterior descending coronary artery...
February 3, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28155241/effects-of-attention-deficit-hyperactivity-disorder-signs-and-socio-economic-status-on-sleep-bruxism-and-tooth-wear-among-schoolchildren-structural-equation-modelling-approach
#13
Isabella Mota-Veloso, Roger Keller Celeste, Cynthia Pimenta Fonseca, Maria Eliza Consolação Soares, Leandro Silva Marques, Maria Letícia Ramos-Jorge, Joana Ramos-Jorge
BACKGROUND: The prevalence of both bruxism and attention deficit hyperactivity (ADHD) has increased in recent years. AIM: This study evaluated the direct and indirect effects of signs of ADHD, reported by parents/caregivers and teachers, with sleep bruxism. In addition, this study explores the effects of socio-economic status (SES) on sleep bruxism. DESIGN: This cross-sectional study was performed in Diamantina, Brazil, with 851 randomly selected schoolchildren aged 6-12 years...
February 3, 2017: International Journal of Paediatric Dentistry
https://www.readbyqxmd.com/read/28155103/respiratory-disorders-and-the-prevalence-of-sleep-bruxism-among-schoolchildren-aged-8-to-11%C3%A2-years
#14
Clarissa Lopes Drumond, Débora Souto Souza, Júnia Maria Serra-Negra, Leandro Silva Marques, Maria Letícia Ramos-Jorge, Joana Ramos-Jorge
PURPOSE: The aim of this study was to evaluate the association between respiratory disorders and sleep bruxism, with an evaluation of demographic/socioeconomic factors and childhood stress as confounding variables. METHODS: A cross-sectional study was performed in the city of Diamantina, Brazil, with 448 randomly selected schoolchildren aged 8 to 11 years. The schoolchildren underwent an oral examination for the evaluation of bruxism. Parents/caregivers answered a questionnaire for the assessment of sleep bruxism; socioeconomic-demographic factors; and respiratory disorders, such as rhinitis, sinusitis, and bronchitis...
February 3, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28150091/reliability-and-validity-of-the-short-version-of-udvalg-for-kliniske-undersogelser-in-antipsychotic-treatment
#15
Kun-Po Chen, For-Wey Lung
The aim of this study was to develop a reliable and valid short version of the Udvalg for Kliniske Undersogelser (UKU) to efficiently evaluate the side effects of antipsychotics in patients with schizophrenia. This multi-site study included 10 hospitals, which included 331 inpatients and outpatients diagnosed with schizophrenia. UKU, Clinical Global Impression-Severity (CGI-S), Personal and Social Performance (PSP) and dosage of paliperidone were collected. The predictive validity of the UKU-short version, as well as that of the CGI-S, PSP and paliperidone dosages, was analyzed using structural equation modeling (SEM), latent growth models (LGM), and confirmatory factor analysis to test its content and construct validity...
February 1, 2017: Psychiatric Quarterly
https://www.readbyqxmd.com/read/28143496/efficacy-of-paracetamol-diclofenac-and-advice-for-acute-low-back-pain-in-general-practice-design-of-a-randomized-controlled-trial-pace-plus
#16
M Schreijenberg, P A J Luijsterburg, Y D M Van Trier, D Rizopoulos, M A Koopmanschap, L Voogt, C G Maher, B W Koes
BACKGROUND: Low back pain is common and associated with a considerable burden to patients and society. There is uncertainty regarding the relative benefit of paracetamol and diclofenac and regarding the additional effect of pain medication compared with advice only in patients with acute low back pain. This trial will assess the effectiveness of paracetamol, diclofenac and placebo for acute low back pain over a period of 4 weeks. Furthermore, this trial will assess the additional effectiveness of paracetamol, diclofenac and placebo compared with advice only for acute low back pain over a period of 4 weeks...
February 1, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28129442/adolescent-sleep-duration-variability-and-peak-levels-of-achievement-and-mental-health
#17
Andrew J Fuligni, Erin H Arruda, Jennifer L Krull, Nancy A Gonzales
To inform public health recommendations for adolescent sleep, the amounts of sleep associated with the highest levels of academic achievement and mental health were examined. The degree to which daily variability in sleep duration represents an underappreciated but functionally significant sleep behavior also was tested. A total of 421 adolescents (Mage  = 15.03 years) with Mexican-American backgrounds reported nightly sleep times for 2 weeks; approximately 80% repeated the same protocol 1 year later. Multilevel modeling indicated that the amount of sleep associated with the lowest levels of internalizing and externalizing symptoms was more than 1 hr greater than the amount associated with the highest levels of academic performance...
January 27, 2017: Child Development
https://www.readbyqxmd.com/read/28129246/effects-of-continuous-positive-airway-pressure-treatment-on-aldosterone-excretion-in-patients-with-obstructive-sleep-apnoea-and-resistant-hypertension-a-randomized-controlled-trial
#18
Fabio de Souza, Elizabeth S Muxfeldt, Victor Margallo, Arthur F Cortez, Aline H Cavalcanti, Gil F Salles
OBJECTIVE: Aldosterone excess has been equally associated with resistant hypertension (RHT) and obstructive sleep apnoea (OSA). We conducted a randomized controlled study to assess the effect of continuous positive airway pressure (CPAP) treatment on 24-h urinary aldosterone excretion in patients with RHT and moderate/severe OSA. METHODS: A total of 117 patients were randomized (57 CPAP and 60 control groups). Aldosterone excretion was determined by 24 h urine (24h-UAldo) collected at randomization and after 6 months of follow-up...
January 27, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28124477/a-predictive-model-for-obstructive-sleep-apnea-and-down-syndrome
#19
Brian G Skotko, Eric A Macklin, Marco Muselli, Lauren Voelz, Mary Ellen McDonough, Emily Davidson, Veerasathpurush Allareddy, Yasas S N Jayaratne, Richard Bruun, Nicholas Ching, Gil Weintraub, David Gozal, Dennis Rosen
Obstructive sleep apnea (OSA) occurs frequently in people with Down syndrome (DS) with reported prevalences ranging between 55% and 97%, compared to 1-4% in the neurotypical pediatric population. Sleep studies are often uncomfortable, costly, and poorly tolerated by individuals with DS. The objective of this study was to construct a tool to identify individuals with DS unlikely to have moderate or severe sleep OSA and in whom sleep studies might offer little benefit. An observational, prospective cohort study was performed in an outpatient clinic and overnight sleep study center with 130 DS patients, ages 3-24 years...
January 26, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28123664/proposing-the-clinical-inventory-of-sleep-quality
#20
Karen A Fernández-Cruz, Ulises Jiménez-Correa, Hernán A Marín-Agudelo, Claudio Castro-López, Adrián Poblano
INTRODUCTION: The aim of the study was to propose the Clinical Inventory of Sleep Quality (CISQ), and compared it with the Pittsburgh sleep quality index (PSQI). METHODS: We studied 400 subjects with the CISQ. Cronbach's alpha coefficient was calculated to measure the reliability, and to determine the concurrent validity, a Canonical correlation analysis was performed. At next, we used an exploratory and confirmatory Factorial analysis with Varimax rotation for validity construct calculation...
July 2016: Sleep Science
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