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Sleep restriction

Alice P S Kong, Kai Chow Choi, Jihui Zhang, Andrea Luk, Siu Ping Lam, Michael H M Chan, Ronald C W Ma, Juliana C N Chan, Yun Kwok Wing
AIMS: We aimed to explore the associations of sleep patterns during weekdays and weekends with glycemic control in patients with type 2 diabetes. METHODS: We examined the association between indices of glycemic control [glycated hemoglobin (HbA1c) and fasting plasma glucose (FPG)] and sleep parameters (sleep duration, bedtime, and differences of sleep duration during weekdays and weekends) from adults with type 2 diabetes recruited in a prospective cohort enrolling from hospital medical clinics...
October 19, 2016: Acta Diabetologica
Yiqin Jiang, Elise Pitmon, Jack Berry, Fred W Wolf, Zach McKenzie, Tim J Lebestky
Sleep is an essential behavioral state of rest that is regulated by homeostatic drives to ensure a balance of sleep and activity, as well as independent arousal mechanisms in the central brain. Dopamine has been identified as a critical regulator of both sleep behavior and arousal. Here we present results of a genetic screen that selectively restored the Dopamine Receptor (DopR/DopR1/dumb) to specific neuroanatomical regions of the adult Drosophila brain to assess requirements for DopR in sleep behavior. We have identified subsets of the mushroom body that utilize DopR in daytime sleep regulation...
October 19, 2016: G3: Genes—Genomes—Genetics
Brice Faraut, Thomas Andrillon, Marie-Françoise Vecchierini, Damien Leger
Sleep specialists have proposed measures to counteract the negative short- and long-term consequences of sleep debt, and some have suggested the nap as a potential and powerful "public health tool". Here, we address this countermeasure aspect of napping viewed as an action against sleep deprivation rather than an action associated with poor health. We review the physiological functions that have been associated positively with napping in both public health and clinical settings (sleep-related accidents, work and school, and cardiovascular risk) and in laboratory-based studies with potential public health issues (cognitive performance, stress, immune function and pain sensitivity)...
September 13, 2016: Sleep Medicine Reviews
Christophe Colas-Ribas, Isabelle Signolet, Samir Henni, Mathieu Feuillloy, Frédéric Gagnadoux, Pierre Abraham
The prevalence of pulmonary disease in patients with peripheral artery disease (PAD) has not been extensively studied. Recent evidence has shown that ∼20% of the patients have an atypical chest transcutaneous oxygen pressure (TcpO2) pattern during exercise, which suggests walking-induced hypoxemia. The main objectives of this study were to: (1) describe in a retrospective way the characteristics of the patients suffering from claudication, who attended a treadmill testing in our laboratory, (2) assess the prevalence of known or unknown pulmonary disease...
October 2016: Medicine (Baltimore)
Min-Hee Lee, Youngjin Lee, Yoon Ho Hwang, Areum Min, Bong Soo Han, Dong Youn Kim
Sleep restriction (SR) is defined as the condition of not having enough sleep, and it can cause brain injury. In this study, we examined the impact of SR on the structural brain network. We obtained diffusion MRI (dMRI) data for the SR group of fourteen participants who got less than or equal to 5.5 h of sleep for the last 1 month and normal group of the same number of participants who got 7 h of sleep. We constructed the structural brain networks from the dMRI data and analyzed them using graph theoretical approaches...
September 30, 2016: Neuroreport
Ognjen Visnjevac, Shrif Costandi, Bimal A Patel, Girgis Azer, Priya Agarwal, Robert Bolash, Nagy A Mekhail
BACKGROUND: Complex regional pain syndrome (CRPS) is a painful, debilitating affliction that is often difficult to treat. It has become common international practice to use spinal cord stimulation (SCS) for the treatment of CRPS as other therapies fail to provide adequate relief, quality of life, or improvement in function. This comprehensive outcome-specific systematic review of the use of SCS for CRPS was performed to elucidate the available evidence with focus on clinically relevant patient-specific outcomes...
October 14, 2016: Pain Practice: the Official Journal of World Institute of Pain
Andrew Mccarthy, Sally Loomis, Brian Eastwood, Keith A Wafford, Raphaëlle Winsky-Sommerer, Gary Gilmour
While several methods have been used to restrict the sleep of experimental animals, it is often unclear whether these different forms of sleep restriction have comparable effects on sleep-wake architecture or functional capacity. The present study compared four models of sleep restriction, using enforced wakefulness by rotation of cylindrical home cages over 11 h in male Wistar rats. These included an electroencephalographic-driven 'Biofeedback' method and three non-invasive methods where rotation was triggered according to a 'Constant', 'Decreasing' or random protocol based upon the 'Weibull' distribution fit to an archival Biofeedback dataset...
October 14, 2016: Journal of Sleep Research
Mara E J Bouwmans, Elisabeth H Bos, H J Rogier Hoenders, Albertine J Oldehinkel, Peter de Jonge
BACKGROUND: The exact nature of the complex relationship between sleep and affect has remained unclear. This study investigated the temporal order of change in sleep and affect in participants with and without depression. METHODS: 27 depressed patients and 27 pair-matched healthy controls assessed their sleep in the morning and their affect 3 times a day for 30 consecutive days in their natural environment. Daily sleep quality and average positive affect (PA) and negative affect (NA) were used to examine whether changes in sleep quality preceded or followed changes in PA and NA, and whether this was different for patients and healthy controls...
September 29, 2016: Journal of Affective Disorders
Charlotte C Gupta, Jill Dorrian, Crystal L Grant, Maja Pajcin, Alison M Coates, David J Kennaway, Gary A Wittert, Leonie K Heilbronn, Chris B Della Vedova, Siobhan Banks
Shiftworkers have impaired performance when driving at night and they also alter their eating patterns during nightshifts. However, it is unknown whether driving at night is influenced by the timing of eating. This study aims to explore the effects of timing of eating on simulated driving performance across four simulated nightshifts. Healthy, non-shiftworking males aged 18-35 years (n = 10) were allocated to either an eating at night (n = 5) or no eating at night (n = 5) condition. During the simulated nightshifts at 1730, 2030 and 0300 h, participants performed a 40-min driving simulation, 3-min Psychomotor Vigilance Task (PVT-B), and recorded their ratings of sleepiness on a subjective scale...
October 13, 2016: Chronobiology International
Denise Manica, Cláudia Schweiger, Leo Sekine, Simone Chaves Fagondes, Marisa Gasparin, Deborah Salle Levy, Gabriel Kuhl, Marcus Vinicius Collares, Paulo José Cauduro Marostica
OBJECTIVE: To evaluate the performance of two glossoptosis airway obstruction classifications in predicting symptom severity and laryngeal exposure difficulty in Robin Sequence (RS) patients. SETTING: Public tertiary hospital otolaryngology section (Hospital de Clínicas de Porto Alegre - HCPA). PATIENTS: All RS patients diagnosed at HCPA from October 2012 to February 2015 were enrolled, a total of 58 individuals. They were classified in isolated RS, RS-Plus and syndromic RS...
November 2016: International Journal of Pediatric Otorhinolaryngology
Michael J Redd, Jay R Hoffman, Yftach Gepner, Jeffrey R Stout, Mattan W Hoffman, Daniel Ben-Dov, Shany Funk, David D Church, Guy Avital, Yacov Chen, Hagai Frankel, Ishay Ostfeld
OBJECTIVE: Insulin-like growth factor-I (IGF-I) is a metabolic and anabolic biomarker that has been proposed to reflect physiological adaptations resulting from multistressor environments. The bioactivity of IGF-I is regulated by seven different insulin-like growth factor binding proteins (IGFBPs) which act not only as carriers of IGF-1, but also function as a modulator of IGF-I availability and activity. Supplementing with β-hydroxy-β-methylbutyrate (HMB) has been shown to enhance physiological outcomes associated with intense training, and has been reported to augment the IGF-1 response...
October 5, 2016: Growth Hormone & IGF Research
Ane Andrade Santa Cecília Silva, Tássia do Vale Cardoso Lopes, Kely Raspante Teixeira, Jordane Amaral Mendes, Matheus Eduardo de Souza Borba, Maria Carliana Mota, Jim Waterhouse, Cibele Aparecida Crispim
Subjective responses to meals are altered by shortened sleep time and anxiety state, but this effect has been poorly studied in shift workers - who act as a typical model concerning sleep restriction and present high levels of anxiety. The objective of this study was to compare subjective perceptions of meals and the levels of anxiety in the same subjects after working night shifts and after taking a nocturnal sleep, and to investigate associations between the responses to meals and the levels of anxiety under these two conditions...
October 6, 2016: Appetite
Salome Kurth, Douglas C Dean, Peter Achermann, Jonathan O'Muircheartaigh, Reto Huber, Sean C L Deoni, Monique K LeBourgeois
Brain networks respond to sleep deprivation or restriction with increased sleep depth, which is quantified as slow-wave activity (SWA) in the sleep electroencephalogram (EEG). When adults are sleep deprived, this homeostatic response is most pronounced over prefrontal brain regions. However, it is unknown how children's developing brain networks respond to acute sleep restriction, and whether this response is linked to myelination, an ongoing process in childhood that is critical for brain development and cortical integration...
2016: Frontiers in Human Neuroscience
Fernando R Carvalho, Débora A Lentini-Oliveira, Lucila Bf Prado, Gilmar F Prado, Luciane Bc Carvalho
BACKGROUND: Apnoea is a breathing disorder marked by the absence of airflow at the nose or mouth. In children, risk factors include adenotonsillar hypertrophy, obesity, neuromuscular disorders and craniofacial anomalies. The most common treatment for obstructive sleep apnoea syndrome (OSAS) in childhood is adeno-tonsillectomy. This approach is limited by its surgical risks, mostly in children with comorbidities and, in some patients, by recurrence that can be associated with craniofacial problems...
October 5, 2016: Cochrane Database of Systematic Reviews
Jonathan Cedernaes, Flaminia Fanelli, Alessia Fazzini, Uberto Pagotto, Jan-Erik Broman, Heike Vogel, Suzanne L Dickson, Helgi B Schiöth, Christian Benedict
Following binding to cannabinoid receptors, endocannabinoids regulate a variety of central nervous system processes including appetite and mood. Recent evidence suggests that the systemic release of these lipid metabolites can be altered by acute exercise and that their levels also vary across the 24-h sleep-wake cycle. The present study utilized a within-subject design (involving 16 normal-weight men) to determine whether daytime circulating endocannabinoid concentrations differ following three nights of partial sleep deprivation (4...
September 22, 2016: Psychoneuroendocrinology
Rebecca R Langdon, Herbert C Biggs, Bevan Rowland
BACKGROUND: Australia's mineral, resource and infrastructure sectors continues to expand as operations in rural and remote locations increasingly rely on fly-in, fly-out or drive-in, drive-out workforces in order to become economically competitive. The issues in effectively managing these workforces are becoming more apparent with reported high amounts of turnover and concerns for safety and performance. The issues presented include a range of physical, mental, psychosocial, safety and community challenges...
October 17, 2016: Work: a Journal of Prevention, Assessment, and Rehabilitation
Manuela Funke, Thomas Geiser, Otto D Schoch
In 2015, the international guidelines for diagnosis and treatment of pulmonary hypertension (PH) were updated. Group 3 of the current classification includes PH associated with chronic obstructive pulmonary disease (COPD), interstitial lung disease (ILD), other pulmonary diseases with restrictive and obstructive pattern, sleep-disordered breathing, alveolar hypoventilation disorders, chronic exposure to high altitude, and developmental lung diseases [1]. PH associated with COPD and ILD is common but difficult to manage, as no long-term randomised controlled trial (RCT) has been conducted with specific pulmonary arterial hypertension (PAH) drugs in PH associated with COPD, and the one recent RCT in PH associated with ILD had to be stopped early due to a possible increased risk of death and side effects in the treatment group...
2016: Swiss Medical Weekly
J P Windfuhr, K Savva
BACKGROUND: Tonsillotomy procedures (TT) are being increasingly performed owing to the low postoperative morbidity compared with extracapsular tonsillectomy (TE). Patients may experience regrowth of tonsillar tissue or tonsillitis in the tonsillar remnants eventually resulting in a secondary tonsillectomy. OBJECTIVES: A review of the literature was undertaken to evaluate the current indications and contraindications, surgical instruments, risks of surgery, and the need for further research related to TT...
September 26, 2016: HNO
Rui V Simões, Emma Muñoz-Moreno, Mónica Cruz-Lemini, Elisenda Eixarch, Núria Bargalló, Magdalena Sanz-Cortes, Eduard Gratacós
BACKGROUND: Intrauterine growth restriction (IUGR) and premature birth represent two independent problems that may occur simultaneously, and contribute to impaired neurodevelopment. OBJECTIVE: To assess changes in frontal lobe metabolic profiles of one-year-old IUGR infants born prematurely (P-IUGR) and adequate for gestational age controls, both premature (P-AGA) and born at term (T-AGA), and their association with brain structural and biophysical parameters, and neurodevelopmental outcome at two years...
September 22, 2016: American Journal of Obstetrics and Gynecology
Michael A Grandner, Azizi Seixas, Safal Shetty, Sundeep Shenoy
Sleep is important for regulating many physiologic functions that relate to metabolism. Because of this, there is substantial evidence to suggest that sleep habits and sleep disorders are related to diabetes risk. In specific, insufficient sleep duration and/or sleep restriction in the laboratory, poor sleep quality, and sleep disorders such as insomnia and sleep apnea have all been associated with diabetes risk. This research spans epidemiologic and laboratory studies. Both physiologic mechanisms such as insulin resistance, decreased leptin, and increased ghrelin and inflammation and behavioral mechanisms such as increased food intake, impaired decision-making, and increased likelihood of other behavioral risk factors such as smoking, sedentary behavior, and alcohol use predispose to both diabetes and obesity, which itself is an important diabetes risk factor...
November 2016: Current Diabetes Reports
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