Active clinical trials for "Sleep Deprivation"

College students are in a newly independent phase of life; many of whom encounter unhealthy dietary decision- making, barriers to physical activity, and poor sleep behaviors. Healthy Detours is a location-based smartphone application tailored in real-time to a student's schedule and locale, and aims to guide students toward healthier eating, exercise, and lifestyle choices as a way to prevent the onset of damaging and costly health outcomes. Through a randomized control trial, this Phase II project will test the effectiveness of an evidence-based smartphone application that will provide students with on-demand, location-specific information about healthy lifestyle choices.

The goal of this proposed research is to test the hypothesis that long-term mild sleep restriction (SR), as occurs frequently in adults and adolescents, leads to a positive energy balance and weight gain. Aim 1. To determine the effects of SR, relative to habitual sleep (HS), on food choice and energy intake (EI) in adults at risk of obesity. Hypothesis 1a. EI, assessed by multiple weekly 24-hour recalls, will be greater during a period of SR relative to HS. This will be mostly due to increased fat and carbohydrate intakes. Hypothesis 1b. Neuronal responses to food stimuli, assessed by functional MRI (fMRI) after 6 weeks of SR or HS, will indicate increased activity in networks associated with reward and food valuation (insula, orbitofrontal cortex) during a period of SR relative to HS. These responses will be correlated with intakes of high carbohydrate and high fat foods (hypothesis 1a) and neuropeptide Y (NPY). Moreover, activation of the default mode network (DMN) will be suppressed to a lesser extent after SR compared to HS. Aim 2. To determine the effects of SR, relative to HS, on energy expenditure (EE) via independent and complementary approaches. Hypothesis 2a. EE, assessed by doubly-labeled water (DLW), and physical activity level, monitored daily by actigraphy, will be lower during SR relative to HS. Hypothesis 2b. Brown adipose tissue (BAT), assessed by positron emission tomography and magnetic resonance combined scanner (PET/MR) using 18F-fluorodeoxyglucose (18FDG-PET) and fat fraction (FF) measurement under cold stimulation, will be greater after SR relative to HS. This would suggest higher adaptive thermogenesis after SR compared to HS. BAT activation will also be correlated with NPY. Aim 3. To determine whether SR alters body weight and adiposity relative to HS. Hypothesis 3a. SR will lead to weight gain and increased total adiposity, as assessed using magnetic resonance imaging (MRI), relative to HS. Hypothesis 3b. Increased adiposity after SR will be correlated to an adverse cardio-metabolic risk profile (increased glucose, insulin, triglycerides, leptin, reduced high-density lipoprotein cholesterol and adiponectin) and neuronal responses to food stimuli (Hypothesis 1b), and EE (Hypothesis 2a & 2b). Failure to stimulate BAT with SR will be associated with greater gain in adiposity.

Observational and epidemiological studies have found a link between obesity and short sleep duration with the prevalence of both increasing in the past decades. At this time, it is unknown whether short sleep is a cause of obesity and how short sleep would lead to obesity. Some studies associate short sleep with increased levels of hormone that stimulate appetite. This study will examine how food intake and energy expenditure can be modified by sleep duration as a means of understanding a potential causal pathway.

The purpose of this study is to determine whether or not a low calorie, low glycemic index diet with omega-3 fatty acid supplements can prevent some of the negative consequences of sleep deprivation.

Sleep deprivation is common in critical patients and it can cause impair consolidation of memory, cognitive function, metabolic function, immune, neurological and respiratory system as well as worsen the quality of life after discharge. It has been demonstrated that reducing sleep disturbance could attenuate the development of delirium in ICU patients. However, sleep evaluation is only personal perception. There are various methods for sleep monitoring, in which the most commonly mentioned methods include polysomnography, actigraphy, and the Richards-Campbell Sleep Questionnaire (RCSQ). The aims of this study is to validate the accuracy of the Thai-version RCSQ and actigraphy for sleep measurement compared to polysomnography, which is considered as the gold-standard in Thai critically ill patients admitted to surgical intensive care unit.

The investigators proposed that gabapentin will increase slow-wave sleep in adult critically ill patients. Increasing slow-wave sleep will improve the patients' outcomes (shortening ICU length of stay, improving ventilator free days, increasing delirium free days) in critically ill patients, a university hospital, Thailand.

The COVID-19 pandemic and social isolation order induced stress/anxiety as well as cellphone dependence. As a result, sleep disruption and mental distress became major health concerns. Gamma-aminobutyric acid type-A receptor (GABAAR) is one of the key players in modulating sleep. Dihydromyricetin (DHM), an herbal compound, plays a role in GABAAR modulation and mitigating anxiety. The investigators' partner in China obtained 288 participants who completed the online survey to gain insight into how stress/anxiety and time spent on cellphones affected sleep and mood. The participants were then enrolled in a randomized placebo-controlled double-blind study to assess the effects of DHM on sleep and improvement on stress/anxiety and cellphone using time.

Resilience is the ability to cope effectively and adapt to a wide range of stressful environmental challenges. Sleep loss has been shown to reduce activity in the brain regions responsible for resilience. The ability to resist the effects of sleep loss appears to be a stable, trait-like quality. This study will attempt to predict individuals' trait-resistance to sleep loss based on their neurobiology.

This study will use positron emission tomography (PET) to examine the effect of sleep deprivation on brain function.

Sleep is not simply the absence of wakefulness. Sleep is an active procedure, normally happening every night, and is absolutely vital. Good sleep is essential for our well-being. Survival without food can be further than without sleep. Work time and commuting time seem to affect total sleep time and night bedtime. Social and work obligation can, therefore, suppress sleep time. Sleep deprived individuals may be facing anxiety and depression symptoms. The aim of this study is to investigate the presence of anxiety and depression symptoms among adults with the use of the smartphone application Onar. Onar app will be used to gather information from wearable devices of the users including total sleep time, sleep efficiency, wake after sleep onset time. An established questionnaire (Hospital Anxiety Depression Scale/ HADS) will be used to quantify and detect the presence of anxiety and depression in the study population.