View clinical trials related to Sleep.
Filter by:Goal of this project is to investigate whether increases in inflammation that result from common patterns of restricting sleep on week nights and catching up on sleep over the weekend are caused by disruption in the newly discovered inflammatory resolution pathways. These pathways are crucial in the active termination of the inflammatory response, and their disruption may contribute to ongoing unresolved inflammation, which has been observed not only during periods of sleep restriction, but also after recovery sleep has been obtained. If the hypothesis is true, it is possible that increasing the body's natural production of endogenous, inflammatory resolution mediators may provide a non-behavioral strategy to limit the inflammatory consequences in those undergoing periods of sleep restriction with intermittent recovery sleep.
Preterm newborn sleep deprivation due to medical interventions and environmental characteristics of the Neonatal Intermediate Care Unit (NICU) can increase morbidity and developmental deleterious effects. The aim of this study is to test the effect of earmuffs on sleep pattern of preterm neonates. Prospective, randomized, controlled, crossover study conducted in NICU of two teaching hospitals from São Paulo, Brazil. The effect of earmuffs use was analyzed through polysomnography measurement during four "Quiet times" periods. It was also analyzed sleep related variables during 24 hours of the day. Preterm newborns characteristics and clinical characteristics were also analyzed.
Low oxygen at altitude causes pauses in breathing during sleep, called central sleep apnea. Central sleep apnea causes repeated awakenings and poor sleep. Low oxygen itself and the induced oxidative stress can damage mental function which is likely worsened by poor sleep. Reduced mental function due to low oxygen can pose a serious danger to mountain climbers. However there is also mounting evidence that even in populations of people that live at high altitudes and are considered adapted, low oxygen contributes to reductions in learning and memory. Therefore there is a serious need for treatments which may improve sleep, control of breathing and mental function during low oxygen. Melatonin is a hormone produced in the brain during the night which regulates sleep patterns with strong antioxidant and anti-inflammatory properties. A study previously reported that melatonin taken 90 mins before bed at 4,300 m (14,200 ft) induced sleep earlier, reduced awakenings and improved mental performance the following day. However how melatonin caused these effects was not determined. Therefore this study aims to determine how melatonin effects control of breathing, sleep and mental performance during exposure to low oxygen.
The primary objective is to explore the relationship between experimental condition (placebo or PowerOff) and sleep quality between pre-study and post-study. In addition, volunteers will wear actigraphy watches that collect objective measures of sleep, such as total sleep time, and these data points will be compared pre- and post-study.
Sleep deprivation is common and severe in critically ill patients cared for in intensive care units (ICUs), and is hypothesized to be a key modifiable risk factor for delirium and long-term cognitive disability. Dexmedetomidine reduces the incidence of delirium in ICU patients by unknown mechanisms. This project will determine whether dexmedetomidine reduces delirium by improving sleep, whether bolus dosing vs continuous infusion is better, and the relationship of sleep quality to long-term cognitive outcomes.
People staring at computer screens for long hours, blinking less frequently, or having long-term contact lens wear are prone to dry eye disease (DED). DED is a multifactorial disease accompanied by inflammation of the ocular surface. Further, DED may degrade vision and is associated with depression and have an adverse impact on patient's quality of life. Sudarshan Kriya Yoga (SKY) incorporates standardized collection of breathing techniques followed by Automatic Self Transcending Meditation (ASTM) may help reduce stress, depression, and anxiety, enhance quality of life in patients diagnosed with DED. Thus, the investigators will be studying the effect of SKY plus ASTM on quality of life of DED patients. The investigators plan to conduct a single-center pilot RCT. Patients with DED will be randomized to SKY followed by ASTM plus Usual care (UC) or UC alone to assess changes in health-related quality of life (HRQOL). HRQOL is a vital construct focusing on impact of health on quality of life. Along with HRQOL the investigators will measure changes in extent of depression and anxiety. Additionally, majority of current ophthalmic literature describes changes in clinical variables whilst lacking information on HRQOL. Thus, there is a high necessity to assess if there is an association between HRQOL and routinely measured clinical data. Through this study the investigators shall attempt to correlate HRQOL with clinical data.
The aim of this study is to examine the neurobehavioural and glucose metabolic responses to two successive cycles of sleep restriction and recovery in adolescents, and to determine the benefits of napping on cognitive performance, alertness, mood and glucose metabolism. Using a split-sleep design, 60 participants, aged 15 to 19 years old, are divided into a nap and a no-nap group. Both groups undergo two cycles of sleep restriction and recovery over a period of 15 days. The no-nap group receives a 6.5-hour sleep opportunity on sleep restriction nights, with no daytime nap opportunity. The nap group receives a 5-hour sleep opportunity on sleep restriction nights, and has a 1.5-hour nap opportunity the following afternoon.
In the majority of intensive care units, nurses work 12 hour shifts that consist of days and nights. Shift work outside of 6am-6pm has been reported to cause fatigue, induce sleep disorders, and cause metabolic disturbances. This shift to a nocturnal 'day' rather than diurnal, can result in reduced work performance, processing errors, accidents at work, absenteeism, and reduced quality of life. More chronically, those working at night have been shown to experience higher risks of heart disease, cancer and shorter median durations of life span. Much of this elevated risk is thought to be due to altered exposure to light, the dominant environmental cue regulating our circadian rhythms. As diurnal organisms much of our biology is regulated by the solar day. Acutely, bright light exposure (i.e., sun) regulates the phase of the biological clock principally through the suppression of melatonin, which biologically mediates increased alertness and in essence, 'our daytime alertness'. During the night melatonin gradually increases and induces tiredness and ultimately sleep. This, in part, is biology behind the use of melatonin in those with sleep disturbances or to mitigate jet lag, with cross-continental or transoceanic flights. In this study, the investigators will randomize nurses in the hospital to receive either high intensity white light (3,000 lux) or standard ambient white fluorescent (~400 lx) light for 10 hours during their night shift. This high illuminance light, rich in blue spectrum, is what diurnal creatures, like humans, are exposed to during the day. The lights may subsequently be equipped with blue filters (442 nm) to heighten the exposure to the rich blue spectrum light. Exposure will commence at the beginning of the night shift (~7pm) and continue for 10 hours. The rationale for terminating exposure prior to shift end is to foster an onset of sleep biology. At the end of each shift, the nurses will complete the Stanford Sleepiness Scale and the Psychomotor Vigilance Task (PVT). Saliva samples will be collected for melatonin level analysis and the nurses will complete sleep diaries at home. The investigators hypothesize that exposure to high intensity lighting during night shifts will reduce fatigue and enhance alertness and computational capacity that correlates with reduced melatonin.
This research project will examine whether experimental sleep extension in children alters the neural and behavioral mechanisms by which short sleep is a risk factor for emotional/behavioral problems. Children ages 5.0-5.9 years with chronic insufficient sleep (≤9 h/night for ≥6 months) will be randomized to either a sleep Extension or to an active Control group. Extension group parents will participate in a 1-month individualized behavioral sleep intervention to promote targeted sleep duration improvements before beginning a 2-week sleep Extension schedule (8 week protocol). Brain and behavioral assessments will occur at Baseline and post sleep Extension.
The overall goal of this project is to develop and to preliminarily validate a novel intervention to be delivered in the high school setting that integrates two evidence-based, school-based interventions for urban adolescents with proven efficacy: (1) Asthma Self-Management for Adolescents (ASMA), an intervention for adolescents with uncontrolled asthma and (2) the Sleep-Smart Program (Sleep-Smart), which focuses on sleep hygiene and behaviors in urban adolescents. The aim for Phase I is to develop and integrate school-based interventions to improve asthma self-management and sleep hygiene in urban high school students via interviews. The aims for Phase II are: (1) to evaluate the feasibility and acceptability of the intervention procedures; and (2) to assess the preliminary evidence of the effects of the intervention on improving sleep quality in urban high school students with persistent asthma over a 2-month follow-up period. This record is for Phase II only.