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https://www.readbyqxmd.com/read/29045623/the-influence-of-circadian-timing-on-olfactory-sensitivity
#1
Rachel S Herz, Eliza Van Reen, David Barker, Cassie J Hilditch, Ashten Bartz, Mary A Carskadon
Olfactory sensitivity has traditionally been viewed as a trait that varies according to individual differences but is not expected to change with one's momentary state. Recent research has begun to challenge this position and time of day has been shown to alter detection levels. Links between obesity and the timing of food intake further raise the issue of whether odor detection may vary as a function of circadian processes. To investigate this question, thirty-seven (21 male) adolescents (M age =13.7 years) took part in a 28-hr forced-desynchrony (FD) protocol with 17...
October 17, 2017: Chemical Senses
https://www.readbyqxmd.com/read/29044497/pediatric-headache-and-sleep-disturbance-a-comparison-of-diagnostic-groups
#2
Jonathan Rabner, Karen J Kaczynski, Laura E Simons, Alyssa LeBel
OBJECTIVE: To examine whether sleep disturbance differs by headache diagnosis in a pediatric sample, and whether this effect remains when other factors affecting sleep are included. BACKGROUND: Primary headache disorders can be severe and disabling, impacting a child's functioning and quality of life. Many children and adolescents with chronic headaches also experience sleep difficulties, and there is likely a bidirectional relationship between headaches and sleep difficulties...
October 17, 2017: Headache
https://www.readbyqxmd.com/read/29039246/regular-practice-of-competitive-sports-does-not-impair-sleep-in-adolescents-dados-study
#3
María Reyes Beltran-Valls, Enrique García Artero, Ana Capdevila-Seder, Alejandro Legaz-Arrese, Mireia Adelantado-Renau, Diego Moliner-Urdiales
PURPOSE: To analyze differences in sleep quality and duration by athletic status and sex, and to examine the association between physical activity (PA) recommendation and sleep in adolescents. METHODS: A total of 267 adolescents [13.9 (0.3) y] from Deporte, ADOlescencia y Salud (DADOS) study (129 girls) were included in this cross-sectional analysis. Athletes competed regularly in organized sport events and trained ≥3 days per week, but nonathletes did not compete...
October 17, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29031757/what-predicts-inattention-in-adolescents-an-experience-sampling-study-comparing-chronotype-subjective-and-objective-sleep-parameters
#4
Timo Hennig, Katarina Krkovic, Tania M Lincoln
OBJECTIVE: Many adolescents sleep insufficiently, which may negatively affect their functioning during the day. To improve sleep interventions, we need a better understanding of the specific sleep-related parameters that predict poor functioning. We investigated to which extent subjective and objective parameters of sleep in the preceding night (state parameters) and the trait variable chronotype predict daytime inattention as an indicator of poor functioning. METHODS: We conducted an experience-sampling study over one week with 61 adolescents (30 girls, 31 boys; mean age = 15...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29031754/predictors-of-insomnia-onset-in-adolescents-in-japan
#5
Mikiko Tokiya, Yoshitaka Kaneita, Osamu Itani, Maki Jike, Takashi Ohida
OBJECTIVE: The objective of this study was to clarify the incidence rate and predictive factors of insomnia in Japanese junior and senior high school students. METHODS: We conducted a baseline survey on first year junior and senior high school students (seventh and 10th graders) throughout the nation. A follow-up survey was then conducted two years later. For both surveys, we used self-administered questionnaires inquiring about sleep, mental health status, lifestyle, participation in club activities, and study hours...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29031753/the-short-and-long-of-adolescent-sleep-the-unique-impact-of-day-length
#6
Kate Bartel, Annette van Maanen, Jamie Cassoff, Oddgeir Friborg, Anne Marie Meijer, Frans Oort, Paul Williamson, Reut Gruber, Bärbel Knäuper, Michael Gradisar
STUDY OBJECTIVES: Variation in day length is proposed to impact sleep, yet it is unknown whether this is above the influence of behavioural factors. Day length, sleep hygiene, and parent-set bedtime were simultaneously explored, to investigate the relative importance of each on adolescents' sleep. METHODS: An online survey was distributed in four countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway). RESULTS: Overall, 711 (242 male; age M = 15...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29031752/sleep-and-slow-wave-activity-in-depressed-adolescent-boys-a-preliminary-study
#7
Olena Santangeli, Tarja Porkka-Heiskanen, Jussi Virkkala, Anu E Castaneda, Mauri Marttunen, Tiina Paunio, Anna S Urrila
OBJECTIVE: Adolescence is a vulnerable period of life that is characterized by increasing incidence of depression. Sleep disturbance is one of the diagnostic symptoms of depressive disorder. Adolescence is also characterized by dramatic maturational changes in sleep and its regulation. The goal of this study was to assess sleep macroarchitecture and slow-wave activity (SWA) in depressed adolescent boys. METHODS: Eight non-medicated adolescent boys meeting the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria for depressive disorder and 10 age-matched healthy controls (average age 16...
October 2017: Sleep Medicine
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/29018317/jake%C3%A2-multimodal-data-capture-system-insights-from-an-observational-study-of-autism-spectrum-disorder
#9
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/28994246/time-to-learn-how-chronotype-impacts-education
#10
REVIEW
Giulia Zerbini, Martha Merrow
A growing body of literature has linked chronotype and sleep to school performance. Chronotype is under the control of the circadian clock and refers to sleep timing and diurnal preferences. Chronotype changes with age and is latest during adolescence, giving rise to a mismatch between the (late) circadian clock and the (early) school clock. In general, evening (late) chronotypes obtain lower grades. School performance is influenced by many other factors, such as motivation, intelligence, and conscientiousness...
October 10, 2017: PsyCh Journal
https://www.readbyqxmd.com/read/28992746/changes-in-sleep-habits-between-1985-and-2013-among-children-and-adolescents-in-sweden
#11
Annika Norell-Clarke, Curt Hagquist
AIMS: The aim was to investigate changes in child and adolescent sleep habits in Sweden over time. This had not been done previously. METHODS: Cross-sectional questionnaire data over three decades of investigations of the Health Behaviours of School Children study (1985/1986, 2005/2006 and 2013/2014) were used. The sample included 18,682 children and adolescents, aged 11, 13 and 15. Empirically based age-specific sleep duration recommendations were used to operationalise sleep duration...
October 1, 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/28989740/spreading-of-components-of-mood-in-adolescent-social-networks
#12
Robert W Eyre, Thomas House, Edward M Hill, Frances E Griffiths
Recent research has provided evidence that mood can spread over social networks via social contagion, but that, in seeming contradiction to this, depression does not. Here, we investigate whether there is evidence for the individual components of mood (such as appetite, tiredness and sleep) spreading through US adolescent friendship networks while adjusting for confounding by modelling the transition probabilities of changing mood state over time. We find that having more friends with worse mood is associated with a higher probability of an adolescent worsening in mood and a lower probability of improving, and vice versa for friends with better mood, for the overwhelming majority of mood components...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28984477/pediatric-pharmacoepidemiology-safety-and-effectiveness-of-medicines-for-adhd
#13
Antonio Clavenna, Maurizio Bonati
Attention-deficit hyperactivity disorder (ADHD) is a common neurobehavioral disorder in children and adolescents that comprises core symptoms of developmentally inappropriate levels of inattention and/or hyperactivity and impulsivity. Stimulant (methylphenidate, amphetamines) and non stimulant (atomoxetine, clonidine and guanfacine) are the treatment usually prescribed for ADHD. Area covered: This review covers the safety of ADHD medications in children and adolescents. MEDLINE, EMBASE and PsycINFO databases were searched with the aim to retrieve prospective studies that monitored the incidence of adverse events (AEs) in children receiving drug therapy for ADHD...
October 12, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28983580/laparoscopic-sleeve-gastrectomy-for-morbidly-obese-adolescents-in-singapore
#14
Dallan Dargan, Dmitrii Dolgunov, Khin Thida Soe, Pamela Er, Fathimath Naseer, Davide Lomanto, Jimmy By So, Asim Shabbir
INTRODUCTION: Laparoscopic sleeve gastrectomy (LSG) outcomes among adolescents and adolescent obesity associated factors in Singapore were evaluated. METHODS: Prospectively collected data of patients aged 16-19 years at first presentation who underwent LSG was retrospectively reviewed. A questionnaire was completed incorporating cigarette, alcohol, dietary and exercise habits; family history of obesity; Berlin and Epworth scores; and Patient Health Questionnaire-9 (PHQ-9) scores...
October 6, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28977318/lifestyle-indicators-and-cardiorespiratory-fitness-in-adolescents
#15
Eduardo Rossato de Victo, Gerson Luis de Moraes Ferrari, João Pedro da Silva, Timóteo Leandro Araújo, Victor Keihan Rodrigues Matsudo
OBJECTIVE: To evaluate the lifestyle indicators associated with cardiorespiratory fitness in adolescents from Ilhabela, São Paulo, Brazil. METHODS: The sample consisted of 181 adolescents (53% male) from the Mixed Longitudinal Project on Growth, Development, and Physical Fitness of Ilhabela. Body composition (weight, height, and body mass index, or BMI), school transportation, time spent sitting, physical activity, sports, television time (TV), having a TV in the bedroom, sleep, health perception, diet, and economic status (ES) were analyzed...
January 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28977300/analysis-of-daytime-sleepiniess-in-adolescents-by-the-pediatric-daytime-sleepiness-scale-a-systematic-review
#16
Carolina Meyer, Geraldo Jose Ferrari, Diego Grasel Barbosa, Rubian Diego Andrade, Andreia Pelegrini, Érico Pereira Gomes Felden
OBJECTIVE: To systematically review the use of the Pediatric Daytime Sleepiness Scale (PDSS) in the analysis of daytime sleepiness in children and adolescents. DATA SOURCE: The electronic databases PubMed and SciELO were consulted between 2003 and 2015. As inclusion criterion, studies were considered in English, Spanish and Portuguese, original articles of any type of design, articles with a sample of children and/or adolescents, articles that used the PDSS. Duplicate articles, articles with no relation to the theme, articles with another investigated population, and articles that the parents answered the instrument for their children were excluded...
July 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28977294/sleep-quality-and-its-association-with-psychological-symptoms-in-adolescent-athletes
#17
Gabriel Cordeiro Gomes, Muana Hiandra Pereira Dos Passos, Hítalo Andrade Silva, Valéria Mayaly Alves de Oliveira, Wbinayara Alves Novaes, Ana Carolina Rodarti Pitangui, Rodrigo Cappato de Araújo
OBJECTIVE: To verify the prevalence of poor sleep quality and its association with personal characteristics and symptoms of depression, anxiety and stress in amateur adolescent athletes. METHODS: 309 adolescent athletes aged between 10 and 19 years were enrolled. Data collection included: a structured questionnaire, with personal information; the Pittsburgh Sleep Quality Index (PSQI); and the Depression, Anxiety and Stress Scale (DASS-21). Results are described in mean and standard deviation (numeric variables) and absolute and relative frequencies (categorical variables)...
July 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28975007/the-medical-and-economic-burden-of-narcolepsy-implications-for-managed-care
#18
REVIEW
Michael J Thorpy, George Hiller
BACKGROUND: The neurologic disorder narcolepsy results from dysregulation of the sleep-wake cycle and is primarily characterized by chronic, severely excessive daytime sleepiness and cataplexy, an emotionally induced muscle weakness. The prevalence of narcolepsy is approximately 0.05%, and onset generally occurs during the first 2 decades of life. Narcolepsy is believed to be an autoimmune disorder with destruction of hypocretin-producing neurons in the lateral hypothalamus. OBJECTIVES: To provide an enhanced understanding of narcolepsy and establish the need for early diagnosis and rapid initiation of effective treatment for patients with narcolepsy...
July 2017: American Health & Drug Benefits
https://www.readbyqxmd.com/read/28974591/sleep-in-adolescents-and-young-adults
#19
Ellen S Bruce, Laura Lunt, Janet E McDonagh
Sleep has an important role in maintaining health and wellbeing; this relationship is becoming increasingly recognised for adolescents and young adults. Many physicians will encounter young people who present with complaints or conditions that have some relation to poor sleep. This review article looks at why sleep matters within this population group, how it can impact on longer term health consequences and discusses some tools to help enable the clinician to evaluate and address sleep within clinical practice...
October 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28974427/insomnia-disorder-in-adolescence-diagnosis-impact-and-treatment
#20
REVIEW
Massimiliano de Zambotti, Aimee Goldstone, Ian M Colrain, Fiona C Baker
Insomnia disorder is very common in adolescents; it is particularly manifest in older adolescents and girls, with a prevalence comparable to that of other major psychiatric disorders (e.g., depressive disorders). However, insomnia disorder in adolescence is poorly characterized, under-recognized, under-diagnosed, and under-treated, and the reason for the female preponderance for insomnia that emerges after puberty is largely unknown. Insomnia disorder goes beyond an individual complaint of poor sleep or a sleep state misperception, and there is emerging evidence supporting the association of insomnia symptoms in adolescents with alterations in several bio-systems including functional cortical alterations and systemic inflammation...
July 1, 2017: Sleep Medicine Reviews
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