View clinical trials related to Sleep.
Filter by:This randomized controlled trial evaluates the effect of acupressure application on nurses' sleep quality and daytime sleepiness providing care in surgical clinics. This study hypothesizes that acupressure improves sleep quality and reduces daytime sleepiness.
Walnuts have a unique nutritional profile, including the sleep-regulating hormone melatonin, tryptophan, and omega-3 fatty acids, the two latest nutrients involved in melatonin and serotonin synthesis. Although it has been claimed that walnuts may improve sleep, to the investigators' knowledge, no studies have been conducted to objectively determine the impact of walnut consumption on sleep and overall well-being. Therefore, this study aims to investigate the effect of daily walnut consumption on sleep parameters (such as quality and duration). Secondarily, it aims to investigate the impact of daily walnut consumption on body composition, eating behavior, and well-being.
The long-range goal is to reduce suffering and establish alternative options for older adults experiencing pain. This is a randomized controlled study examining the effect of music on pain management in older adults.
High blood pressure (BP) is one of the principal cardiovascular risk factors. While BP levels and hypertension prevalence are well characterized in many populations, information on BP and on cardiovascular risk profile in high altitude inhabitants is limited and frequently contradictory, especially in the large highland populations of South America. The information on the effects of permanent high altitude exposure on cardiovascular variables including BP may be relevant in the light of the known BP-increasing effect of acute exposure to high altitude hypoxia. This information may have practical implications for millions of people living at elevated altitudes in Asia, South America and Africa. The inconclusive epidemiological evidence on BP and cardiovascular risk in high altitude dwellers may be the result of several factors, among them: 1) confounding by genetic and socio-economic factors; 2) imperfect methods of BP evaluation, in particular lack of data on ambulatory and home BP (both methods considered superior to conventional clinic BP in the assessment of exposure to high BP). On this background, the general aim of the study is to compare blood pressure levels and cardiovascular risk profile among population-based samples of subjects residing in Peruvian communities living at different altitudes.
The purpose of this study is to determine whether advancing the timing of home parenteral nutrition from overnight to daytime regimens leads to improved glucose profiles and sleep quality, and other changes in plasma metabolic signatures.
Up to 72% of adolescents with ADHD portray sleep problems. The most common sleep difficulties in adolescents with ADHD are initial insomnia, nocturnal awakenings, non-restorative or restless sleep. These difficulties seem to be causally related to increased ADHD symptom impairment, oppositional and depressive symptomatology, and functional impairments in daily life, resulting in a vicious circle of sleep problems and impairment. Thus, reducing sleep problems is an important intervention target. However, to date there is no evidence-based cognitive behavioral sleep treatment available. Sleep-focused treatments need adaptation towards this developmental phase/disorder for effectiveness, as ADHD and sleep problems are bi-directional. Therefore, a blended treatment targeting the core deficits integrating motivational interviewing, planning skills and sleep interventions is needed. Thus, the aim of this project is testing the short and 3 months follow-up effectiveness of the blended CBT sleep intervention in adolescents with ADHD.
The goal of the present study is to optimize effects of slow oscillatory transcranial direct current stimulation (so-tDCS) on sleep physiology and memory consolidation in humans by combining computational and experimental human models in an iterative process. The investigator therefore works in cooperation with Prof. Dr. Klaus Obermayer (TU Berlin), who contributes computation models with the aim to mechanistically understand the impact of different perturbations on sleep-related electrophysiological features, and to subsequently optimize so-tDCS parameters for inducing SO and spindle activity.
Restless leg syndrome (RLS) is a very common neurological condition characterized by an uncontrollable desire to move the legs. Due to the traumatic effect of RLS on morbidity, the patient is negatively affected in many different directions. The duration and quality of sleep of the patients decrease, and their cognitive functions change. The prevalence or risk of anxiety and depression increases in this population. At the same time, the quality of life of patients is significantly reduced. Among the different pharmacological agents used in RLS, dopamine agonists are the most widely used. However, the reporting of serious and common side effects related to this treatment has led to non-pharmacological approaches in the treatment of RLS and the effectiveness of many different approaches has been investigated. The exercise approach, which is determined to be effective in the treatment of the disease, is a subject that has been little studied. The type, duration and frequency of optimal exercise could not be standardized. In addition, the effect of exercise on RLS patients has been investigated in limited subjects. For this reason, the aim of our study is to examine the effect of different exercise programs on symptoms, sleep, cognitive functions, quality of life, psychological status and fatigue in patients with RLS.
Memory benefits from sleep and these benefits are putatively achieved through reactivation of the neural memory trace during sleep. Studies examining the effects of reactivation commonly focus on single, isolated items - but real-life memories never exist in a vacuum. Individual memories are bound to the context (e.g., the location, time and state of mind in which they are encoded) and this context is later reinstated to recall the details related to the memory. The question of how context participated in the process of sleep reactivation has never been directly examined. This experiment will monitor brain activity during memory encoding, sleep and finally retrieval to investigate the role context plays in sleep-related memory consolidation. Monitoring will be done using functional magnetic resonance imaging (fMRI) and electroencephalographic (EEG) recordings. Participants will go through a series of training trials, in which they will have to learn to associate several small images of items or animals with a larger image of scenes - and also learn the spatial location of these smaller images on the screen. The order of the presented images and the scenes in which they are embedded will remain constant throughout training, creating a solid, consistent temporal context in which item memories will be embedded. After training, participants will receive a 90 minute nap opportunity, during which the sounds associated with specific images will be unobtrusively presented. I expect memory for the spatial location of the cued images to improve. Importantly, I hypothesize that this effect will carry over to other items associated with the same scene (i.e., embedded in the same context) and that the temporal order in which the images were learned will govern this effect. I will use the EEG and fMRI data to estimate, on the basis of neuronal pattern activity, the level of contextual reinstatement and will build on these data, in combination with the behavioral results, to model the level of contextual involvement during sleep. These results could pave the way towards a unified theory of sleep's role in memory consolidation, which would encompass computational models of context and memory as well.
The context in which memories are encoded is a major factor influencing how memories are organized. Individual memories are bound to the context (e.g., the location, time and state of mind in which they are encoded) and this context is later reinstated to recall the details related to the memory. Although the role of context has been explored with regard to memory encoding and retrieval, its role during sleep-related memory consolidation has not been explored. Memories are thought to be reactivated during sleep, subsequently benefitting from the process. This study will use encephalography (EEG) in humans to consider several competing hypotheses regarding context's role in sleep reactivation, thereby enhancing the current understanding of how reactivation of memory over sleep relates to models of context and memory. Participants will learn to associate pictures of scenes to different sounds and to smaller images of items and animals, and then learn the spatial locations of these smaller images on a grid. Crucially, for half of these scenes, the sounds themselves will then also be linked directly to some of images during training. The associated sounds will then be unobtrusively presented during sleep, in a manner that has been shown to improve associated memories. The subsequent memory benefits will reveal whether (1) all images associated with the cued scene will benefit from cuing, demonstrating a context-reactivation effect; (2) only the images directly associated with presented sound will benefit from the cuing, demonstrating a item-reactivation effect; or (3) some composite of these two models. Regardless of which hypothesis is correct, the results will expand our current understanding regarding the role context plays in sleep consolidation.