View clinical trials related to Sleep.
Filter by:The proposed study aims to determine whether an intervention to increase sleep in school-age children is associated with positive changes in eating, activity behaviors and zBMI. One hundred four children 8-11 years old who sleep 9 ½ hours or less per night will be randomly assigned to 1 of 2 conditions: 1) optimize sleep (increase TIB by 1 ½ hours/night to produce a change in sleep duration of approximately 40 minutes/night), or 2) control (no change in sleep). Families of children in the optimize sleep group will be taught effective behavioral strategies that have been shown to improve sleep duration. At baseline, 2-week and 2-month follow-up, the following will be gathered: sleep duration (measured by actigraphy), food intake (measured by 3 days of 24-hour recall), activity level (measured by accelerometry), the relative reinforcing value (RRV) of food (measured using a validated experimental paradigm), and measured child height and weight.
Pain, confusion, and breaks in normal sleep cycles have been challenges commonly faced by patients after undergoing joint surgeries. To address these issues, melatonin, an inexpensive over-the-counter supplement, has shown in previous to help manage sleep disorders, prevent and treat post-operative confusion in patients over 70 years of age, and reduce pain. The purpose of this study is to establish whether melatonin can aid in reducing pain and post-operative confusion and improve sleep quality after total knee replacement
Rationale: Many study reports described benefits of natural sunlight. It is believed that artificial light can achieve similar benefits as sunlight and can be used to compensate for the lack of sunlight, for instance in north-facing hospital rooms or during wintertime. The most plausible paths mediating the effects of light are: - the biological effect of light, relating to circadian biology and the sleep/wake-rhythm; - the emotional/psychological effects of light, relating to mood/stress and the antidepressant action of light . Objective: The project aims to measure, evaluate and quantify the beneficial effects of a dynamic daylight & atmosphere experience in patient rooms for cardiovascular patients during the dark months of the year. Study design: The study involves an experiment in which psychological, emotional and clinical parameters of patients in hospital rooms with standard light situation are compared with those of patients in rooms with a dynamic daylight & atmosphere experience. Study population: The population includes cardiovascular patients who reside in the general cardiology department of the Maastricht University Hospital (18 patient beds) with an intended minimum length of stay of 3 days, who have given written consent. Intervention: Half of the patient rooms on the ward are equipped with special luminaires. In the ceiling, luminaires are installed that offer the basic lighting in the patient room that will automatically and gradually change in light level (100-300 lux) and color temperature (3000-4000 K). This so called daily rhythm light meets the EN12464-1 standard for patient rooms in hospitals. The same luminaires in the ceiling will also offer the light boost by bringing the illuminance to a level of maximal 2000 lux and 7000 K, during a period of two hours in the morning. Besides the ceiling luminaires, a low intensity color cove as well as some white LED spots are added to create a pleasant ambience in the patient room Main study parameters/endpoints: The primary study measures are length of stay and quality of recovery expressed by physiological, emotional and clinical parameters. Also the effect on patient satisfaction is determined using pre and post assessments.
WHAT IS THE PURPOSE OF THIS STUDY? The investigators want to know if wearing a pair of splints at night works to bring the pain down and help you sleep better (in people living with HIV/AIDS related neuropathy). HOW MANY PEOPLE WILL PARTICIPATE? About 58 to 88 people will take part in this study at the Harris County Hospital District (HCHD). WHAT WILL HAPPEN DURING THIS STUDY? As a participant, you will be assigned to one of two treatment groups. In one group, you will be asked to wear leg splints at night and the other you will wear the liners of the splints only. You will be asked to answer questions about how well you sleep, how long you sleep, and about your discomfort at the legs. The researcher will be there to help, but the investigators want you to answer the questions on your own if you can. You will be asked to reach forwards standing next to a wall and to walk for 6 minutes after that. The tests will de done in random order. The sessions will be done at the beginning, at week three and week six. You should finish all of the testing and questionnaires in an hour or less, for a total of three hours over six weeks in the investigators clinic. You will receive instructions on how to use the splints with liners or the liners alone at home. You will be asked to wear them at night only for the next 6 weeks. Finally, the principal investigator will contact you weekly by phone, to discuss issues of comfort and your ability to adhere to the instructions provided.
The goal of this study is to better understand the potential value of reducing stress to ameliorate a cluster of biological and behavioral factors implicated in cardiovascular disease (CVD) risk. These factors include psychological distress, poor sleep quality, and exaggerated physiological responses to emotional stress. Results will be used to develop an innovative brief intervention to reduce risk for CVD by improving sleep quality, ameliorating psychological distress, and attenuating stress physiology.
Inadequate sleep is a major health problem of childhood that often fails to receive attention until significant neurobehavioral and other health problems are noted. Although adequate sleep is essential for normal growth and brain development, studies show that children from minority and economically disadvantaged families are more likely to experience shorter sleep times and more sleep fragmentation compared to their Caucasian and economically advantaged counterparts. As a result, they are disproportionately affected by the adverse health and quality of life consequences of poor sleep. There are currently no intervention studies to the investigators knowledge aimed at addressing sleep disparities by improving sleep duration and sleep hygiene in early school-aged children from minority populations. This study seeks to close the 'sleep gap' that exists between the sleep duration of minority school-aged children and that of their non-minority peers. An interdisciplinary team of researchers and clinicians from Columbia University's Pediatric Lung and Sleep Disorders Center, School of Public Health, Psychiatry Department, and two outpatient clinic systems affiliated with Columbia are collaborating to reduce sleep disparities by improving sleep duration in a group of 5-6 year old minority children. The primary goal of this study is to evaluate the efficacy of a tailored, interactive, educational and behavioral intervention that utilizes trained sleep counselors to assist parents in improving their children's sleep hygiene and reducing risk factors for poor sleep, thereby increasing sleep duration over a 12-month period in a randomized controlled trial of children identified with sleep problems (Aim 1). The investigators will screen 375 parents of 5-6 year old children from 5 primary care clinics to identify children with and without sleep problems and enroll 90 of the 375 children screened who have sleep problems in a randomized controlled trial of an in-home sleep intervention. Using an initial home assessment, baseline actigraphy data, sleep logs recorded by parents, and information regarding risk factors for poor sleep collected from each family during screening, the investigators will work with intervention parents to develop a personalized sleep plan for their children. The investigators will evaluate the effect of the intervention on: a) nightly sleep duration; b) neurocognitive function; and c) behavioral disorders.
Fibromyalgia is a condition of chronic widespread pain, sleep disturbance and fatigue. Most of the patients with fibromyalgia complain of either non-restorative sleep or complaints of disturbed sleep due to pain. The study aimed at examining the effects of milnacipran on sleep disturbance in patients with fibromyalgia. The study is a randomized, double-blind, placebo controlled, two way crossover polysomnography (PSG) study to explore the effects of milnacipran on sleep disturbance. Patients received either milnacipran 50 mg twice a day (BID) or matching placebo.
The main aim of this study is to examine the effects of restricted sleep on energy and substrate metabolism as well as relevant hormonal systems that might be involved in the underlying mechanisms. The investigators hypothesize that short-term sleep curtailment in adolescents is accompanied by 1) increased hunger and desire to eat; 2) increased spontaneous energy intake; 3) reduced spontaneous physical activity; and 4) increased fluctuation in hormones in a way that could favour a positive energy balance and potentially weight gain on the long run.
The purpose of this study is the description of sleeping habits in a working population in the investigators health care environment, analyzing the prevalence of daytime sleepiness and symptoms compatible with the sleep apnea syndrome and finally to analyze predictors of daytime sleepiness.
The success of human expedition missions critically depend on the ability of the crew to be alert and maintain high levels of cognitive function while operating complex, technical equipment. Optimal human health, performance and safety during space flight requires sufficient sleep and synchrony between the circadian pacemaker—which regulates the timing of sleep, endocrine function, alertness and performance—and the timing of the imposed sleep-wake schedule. Crewmembers of the 105-day simulation study will be required to work one night shift every sixth night. This schedule will likely result in sleep loss and circadian misalignment, especially when lighting conditions are similar to those that crewmembers experience during spaceflight. External mission controllers will work 24-hour shifts, also resulting in both sleep loss and circadian misalignment. It has been well documented in laboratory and field studies that both working the night shift and working extended duration shifts result in decrement alertness, performance and mood. In addition to the negative effects that night shift work has on alertness, performance and mood, shift work causes significant short and long-term health problems. Shift workers, particularly night shift workers who invert their normal sleep/wake schedule, suffer for several reasons. First, their endogenous circadian rhythms and the imposed sleep/work schedule are typically out of phase. This is similar to the experience of jet lag. However, while environment cues (e.g., sunrise, sunset, the timing of meals and sleep) enable travelers to adapt quickly to a new time zone, crewmembers in the 105-day simulation will be unable to do so because they will only spend one night of every five working. When working the night shift, the timing of meals, work, and sleep will therefore be out of phase with the normal entrained phase of the circadian timing system. Ingestion of meals at an inappropriate circadian phase results in impaired metabolism, likely underlying the gastrointestinal and metabolic problems experienced by shift workers. Second, this circadian misalignment leads to a substantial loss of sleep efficiency during the (daytime) sleep period, independent of, and in addition to, environmental obstacles to sleep (e.g., noise, light, other crewmembers). Third, misalignment of circadian phase coupled with sleep loss will each result in deterioration of alertness and impairment of performance during the night. Since these adverse effects are particularly acute on the first night of work, the plan for crewmembers on the Mars 105 mission to work the midnight shift every sixth night will subject them repeatedly to the performance impairments associated with acute circadian misalignment and acute sleep deprivation. Lighting Countermeasure. Our group at the Harvard Medical School has successfully developed and tested effective photic countermeasures to alleviate circadian misalignment and improve alertness, performance and mood in night shift workers. The most effective countermeasure to circadian alignment is appropriately-timed and sufficiently intense light. Light also acutely improves alertness, performance and mood. Most recently it has been reported that short wavelength light has been shown to be most effective for both resetting circadian rhythms and acutely improving performance during night work via antecedent suppression of the soporific hormone melatonin. These photic countermeasures have been tested in individual subjects living in laboratory simulations (Countermeasures readiness level/Technology readiness level 7; Evaluation with human subjects in controlled laboratory simulating operational spaceflight environment). The next critical step is to evaluate our countermeasures in an operational simulation of space flight that includes study of the interaction among crew members in a high fidelity simulation (Countermeasures readiness level/Technology readiness level 8; Validation with human subjects in actual operational spaceflight to demonstrate efficacy and operational feasibility). Adequate sleep and circadian alignment are critical to maintaining the health and performance of expedition mission crewmembers. Testing of the developed lighting countermeasure in a high fidelity operational environment imitating the conditions of a future expedition mission (e.g., to Mars) is critical to ensure countermeasure readiness and to reduce the risk of human performance errors due to factors related to circadian disruption, sleep loss and fatigue. Development and testing of this photic countermeasure for mission controllers working 24-hour shifts will further ensure the success of the future long duration expedition missions.