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Recent Updates on Narcolepsy and Hypersomnia

Hong S

Narcolepsy is a chronic neurological sleep disorder caused by hypocretin neuron loss, resulting in excessive daytime sleepiness, disturbed nocturnal sleep, and intrusions of aspects of rapid eye movement sleep in...
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Energy Drink Consumption and Dietary-, Lifestyle-, and Mental Health-Related Behaviors in Korean Adolescents: Based on the 10th–13th Korea Youth Risk Behavior Web-Based Survey

Oh J, Chung J

BACKGROUND: Energy drinks (EDs), functional beverages with high concentrations of caffeine, can cause health risks. This study examined the frequency of ED consumption and related factors in Korean adolescents. METHODS: Data...
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A Patient with the Disrupted Sleep-Wake Rhythm after Traumatic Brain Injury

Kim E, Kim S, Lee JH

Many patients with a traumatic brain injury (TBI) experience a range of sleep problems. Although some studies investigated the pathophysiology of sleep-wake cycle disturbances in TBI patients, it has not...
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Is Advancing Circadian Rhythm the Mechanism of Antidepressants?

Lee HJ

Antidepressants usually require 2–8 weeks after drug administration to obtain a clinical response. In contrast, three fast-acting antidepressant treatments (sleep deprivation, electroconvulsive therapy, and ketamine) significantly reduced depressive symptoms within...
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Validation of the Korean Bedtime Procrastination Scale in Young Adults

An H, Chung SJ, Suh S

OBJECTIVES: Bedtime procrastination is defined as going to bed later than intended, without having external reasons for doing so. Despite various studies investigating the new concept of bedtime procrastination, there...
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Sleep and Anger

Seo Y, Kim SJ

Anger is a multi-dimensional concept ranging from feeling irritable to violent aggression. A growing body of literature suggests the relevance of sleep in regard to anger. The current study aims...
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Obstructive Sleep Apnea and Testosterone Deficiency

Kim SD, Cho KS

Obstructive sleep apnea (OSA) is a common disorder characterized by intermittent hypoxia and sleep fragmentation. OSA in middle-aged men is often associated with decreased testosterone secretion, together with obesity and...
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Nintendo Wii Fit-Based Sleepiness Testing is Not Impaired by Contagious Sleepiness

Tietäväinen A, Kuvaldina , Hæggström E

Sleep deprivation may cause accidents, and it has deteriorating effects on health. A measurement of postural steadiness by a portable and affordable Nintendo Wii Fit balance board can be used...
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Field Study of Effects of Night Shifts on Cognitive Performance, Salivary Melatonin, and Sleep

Kazemi R, Motamedzade M, Golmohammadi R, Mokarami H, Hemmatjo R, Heidarimoghadam R

BACKGROUND: Night shift work is associated with many problems such as sleep deprivation, sleepiness, decreased cognitive performance, increased human errors, and fatigue. This study set out to measure cognitive performance,...
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Assessment of Sleep Deprivation and Fatigue Among Chemical Transportation Drivers in Chonburi, Thailand

Phatrabuddha N, Yingratanasuk T, Rotwannasin P, Jaidee W, Krajaiklang N

BACKGROUND: Fatigue and sleepiness are inter-related and common among road transport drivers. In this study, sleep deprivation and fatigue among chemical transportation drivers were examined. METHODS: A cross-sectional study surveying 107...
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The Incidence and Related Risk Factors of Delirium in the Older Inpatients with Neurological Disorders in a Tertiary Hospital

Kim MS, Jun JY, Chun HJ, Kim YO

PURPOSE: Although there is a high incidence of delirium with increased age, the risk factors have been too various. We investigated the incidence and risk factors in the older inpatient...
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Insomnia with Musculoskeletal Pain in Postmenopause: Associations with Symptoms, Mood, and Quality of Life

Frange C, Hachul H, Hirotsu C, Tufik S, Andersen M

OBJECTIVES: To investigate the relationship between insomnia (INS) combined with chronic musculoskeletal pain (MSP) in postmenopausal women and its characteristics regarding MSP, menopausal and mood symptoms, sleep and quality of...
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Hemodynamic, Autonomic, and Vascular Function Changes after Sleep Deprivation for 24, 28, and 32 Hours in Healthy Men

SÅ‚omko J, Zawadka-Kunikowska M, Kozakiewicz M, Klawe JJ, Tafil-Klawe M, Newton JL, Zalewski P

This study aimed to analyze the impact of sleep deprivation (SD) on cardiac, hemodynamic, and endothelial parameters and to determine whether these are sustained with increased periods of SD. The...
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Dexmedetomidine Ameliorates Sleep Deprivation-Induced Depressive Behaviors in Mice

Moon EJ, Ko IG, Kim SE, Jin JJ, Hwang L, Kim CJ, An H, Lee BJ, Yi JW

PURPOSE: Sleep deprivation induces depressive symptoms. Dexmedetomidine is a α2-adrenoreceptor agonist and this drug possesses sedative, anxiolytic, analgesic, and anesthetic-sparing effect. In this study, the action of dexmedetomidine on sleep...
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Insufficient Sleep in Tension-Type Headache: A Population Study

Oh JH, Cho SJ, Kim WJ, Yang KI, Yun CH, Chu MK

BACKGROUND AND PURPOSE: Sufficient sleep is an essential part of good health and well-being. Tension-type headache (TTH) is the most common type of primary headache and has negative impacts on...
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Differences in self-reported weekend catch up sleep between children and adolescents with and without primary hypertension

Gupta N, Maranda L, Gupta R

BACKGROUND: The data on the association of sleep duration and blood pressure in the pediatric age group have been mixed and most studies have focused on weekday sleep duration. The...
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Relationship between Sleep Duration and Periodontitis in Korean Adult Women: Data from Korea National Health and Nutrition Examination Survey 2014

Do KY, Lee ES

This study aimed to investigate the relationship between sleep duration and periodontitis in adult Korean women. This cross-sectional study was based on the 2014 Korea National Health and Nutrition Examination...
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A Twenty-Minute Nap Boosts the Planning Domain of Executive Function in Sleep Deprived Late Adolescents

Kang K, Choi J, Hwang HJ, Koo DL, Kim JS, Oh B

OBJECTIVES: The positive effects of nap on cognitive function and memory have been researched intensively among children and adults. However, the relationship between afternoon nap and executive function among sleep...
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Immediate Decrease in γ-AminoButyric Acid after Caffeine Intake in Adolescents: a Preliminary MRS Study

Hahn S, Kim YH, Seo HS

In adolescents, sleep deprivation problem is getting worse, and increased caffeine consumption is considered to relieve the stress caused by sleep deprivation and academic burden. In this study, immediate neurologic...
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Sleep Problems as Predictors in Attention-Deficit Hyperactivity Disorder: Causal Mechanisms, Consequences and Treatment

Um YH, Hong SC, Jeong JH

Attention-deficit hyperactivity disorder (ADHD) is notorious for its debilitating consequences and early age of onset. The need for early diagnosis and intervention has frequently been underscored. Previous studies have attempted...
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