Loading clinical trials...
Loading clinical trials...
Showing 1-20 of 63 trials
NCT05393830
The study is designed to investigate the impact of three nights of sleep restricted to 4 hours per night, on the processing and regulation of emotional information compared to Insomnia Disorder and control. The investigators will address and attempt to answer two questions. (i) How do three nights of reduced sleep or a diagnosis of Insomnia Disorder affect the processing and regulation of emotional information compared to typical, undisturbed sleep? (ii) What overlapping and distinct neural mechanisms are engaged and associated with behavioral effects when attempting to process and regulate emotions in a sleep restricted state or with a clinical diagnosis of Insomnia Disorder? This study will investigate sleep's role in emotion processing and regulation. The findings will help further understanding of the role of sleep in healthy emotional functioning.
NCT07434921
The goal of this randomized controlled educational study is to learn whether a structured, theory-based program can help reduce drowsy driving among college students (18 years and older) in Nevada. Drowsy driving means driving when you are very sleepy, tired, or struggling to stay alert. It is a serious safety problem because it can slow reaction time, reduce attention, and increase the risk of crashes, injuries, and even deaths. Many college students have irregular sleep schedules due to classes, jobs, late-night studying, and social activities, which can increase tiredness and increase the likelihood of drowsy driving. Research question 1. Is there a statistically and practically significant difference in the mean score of drowsy driving behavior in the experimental group (Multi-Theory Model (MTM)-based intervention, Stay Awake, Stay Alive©) and the comparison group (standard AAA (American Automobile Association)program-based intervention) from pre-intervention to post-intervention to two-week follow-up 2. Is there a statistically and practically significant difference in the mean score (pre-intervention to post-intervention to two-week follow-up) for the intent to initiate reducing drowsy driving between the experimental (MTM-based intervention, Stay Awake, Stay Alive©) and comparison (standard AAA program-based intervention) groups? 3. Is there a statistically and practically significant difference in the mean score (pre-intervention to post-intervention to two-week follow-up) for the intent to sustain the reduction of drowsy driving between the experimental (MTM-based intervention, Stay Awake, Stay Alive©) and comparison (standard AAA program-based intervention) groups? Researchers will compare two groups to see which approach leads to greater improvement: Group 1: MTM-based "Stay Awake, Stay Alive" program (interactive weekly sessions designed using behavior change theory). Group 2: Standard drowsy driving education program, AAA (American Automobile Association) based education. By comparing these groups, researchers can see whether the MTM-based program provides added benefit beyond standard education alone. Both groups receive the same overall time and attention, so differences in results can be linked more clearly to the program's strategies rather than to simply receiving education. Participants will: * Complete a short screening to confirm eligibility (for example, being 18+ and having recent experiences of drowsy driving) * Provide informed consent before any study activities begin * Be randomly assigned to one of the two programs * Attend four weekly sessions (about 75 minutes each) over 4 weeks, with a short break and refreshments during sessions * Complete surveys at three time points: Baseline (before the program begins), Post-intervention (after week 4), and Follow-up (after two weeks) * Answer questions about their drowsy driving behavior and related influences, such as fatigue triggers, barriers to sleep, confidence to avoid driving when sleepy, and supports that make safe choices easier. The study will measure changes in drowsy driving behavior and in MTM-related factors that may explain why these changes occur. For example, the MTM-based program helps students think about the benefits of avoiding drowsy driving (and the risks of continuing it), build behavioral confidence to choose safer options, and identify practical environmental supports (such as a safe place to rest, asking a friend for a ride, using ride-share or public transportation, or adjusting trip timing). It also supports emotional transformation (turning concern into motivation), practice for change (setting goals and tracking progress), and building a supportive social environment (friends and family encouraging safer choices). During the sessions, participants may learn and practice real-world skills such as recognizing early warning signs of sleepiness (heavy eyelids, frequent yawning, drifting lanes, missing exits), using short rest breaks and safe "pull-over" plans, managing schedules to reduce late-night driving, and creating a personal action plan for high-risk situations (after work shifts, long study nights, or long-distance travel). The follow-up survey helps researchers see whether any improvements continue beyond the end of the 4-week program. At the end of the study, results will help colleges, public health professionals, and road safety programs understand what types of education are most effective for preventing drowsy driving in young adults. If the MTM-based program is effective, it could be adapted and used more widely to improve student safety and reduce injuries related to drowsy driving. Participants who complete the final follow-up survey will receive an incentive.
NCT06070194
Short sleep duration confers high cardiovascular and metabolic risk, but lifestyle factors and molecular mechanisms that contribute to increased blood pressure and poor glucose control during short sleep are not completely understood. Habitual short sleepers are constantly eating, the proposed studies will evaluate if this behavior contributes to heightened cardiovascular and metabolic risk. The study will evaluate if restricted eating duration (8 hours/day) could improve cardiovascular and metabolic health in habitual short sleepers.
NCT07329283
Sleep is an important factor for overall health. This study will see how different light exposure patterns and food intake impact a person's metabolism (how the body breaks down food) when sleeping is reduced. Participants will attend 6 to 8 in-person visits to the study clinic, including three overnight stays. People will complete surveys and medical tests. The study will last about 4 to 6 months.
NCT07084701
This Effects of Non-Invasive Superficial Craniocervical Lymphatic Drainage (NSCLD) on Memory and Cognitive Function in Adults with Sleep deprivation: A Proof-of-Concept Study aims to investigate the effects of Non-Invasive Superficial Craniocervical Lymphatic Drainage (NSCLD) on memory and cognitive function in adults experiencing sleep deprivation(SD). Given the known impact of SD on cognitive performance, this study seeks to explore whether NSCLD, as a non-invasive intervention, can mitigate the cognitive impairments associated with SD.
NCT07314645
Background Daytime napping is increasingly incorporated into athletic recovery routines to manage sleepiness and support alertness. However, the effects of different nap durations on high-intensity anaerobic performance tasks remain insufficiently characterized, particularly in team-sport settings. Nap duration and circadian timing may influence psychomotor readiness, perceived exertion, and fatigue-related responses, yet existing evidence is limited and inconsistent in adolescent athlete populations. This study is designed to examine the acute effects of two daytime nap durations within a controlled experimental framework. Methods This study will employ a randomized, crossover design involving sixteen competitive male adolescent soccer players classified as intermediate chronotypes. Each participant will complete three experimental conditions in a randomized order: no nap (N0), a 25-minute nap (N25), and a 45-minute nap (N45), with standardized washout periods between sessions. Nap compliance will be objectively monitored using wrist-worn actigraphy. Following each condition, participants will observe a standardized 60-minute post-nap wakefulness period prior to performance testing. Agility performance will be assessed using the Pro Agility Test, and anaerobic endurance will be evaluated using a repeated-sprint ability (RSA) protocol. Psychophysiological measures will include ratings of perceived exertion (RPE), the Hooper Index, visual analogue scales (VAS) for subjective alertness, and mood states assessed via the Profile of Mood States (POMS). These outcomes will be collected to compare responses across nap conditions. Objectives The primary objective of this study is to compare the acute effects of two daytime nap durations (25 minutes vs 45 minutes) on agility performance in adolescent soccer players without a habitual napping routine. Secondary objectives include examining nap-related differences in repeated-sprint performance indices, perceived exertion, subjective alertness, and mood states. Keywords daytime nap; athletic recovery; agility; repeated-sprint ability; perceived exertion; mood; chronotype
NCT07085754
This study aims to investigate the effects of 24-hour acute sleep deprivation on plasma Alzheimer's disease biomarkers and multi-omics in individuals with different APOE genotypes, to elucidate the potential role of acute sleep deprivation in AD risk.
NCT07294781
This study examines how the internal body clock (circadian rhythms) influences the way healthy adults experience time, think, and feel when they stay awake for an extended period. Participants will spend about 36 hours in a controlled sleep laboratory while remaining awake the entire time. Light, posture, food intake, and activity are kept as constant as possible (a "constant routine") so that changes over time mainly reflect the body's internal clock and increasing sleepiness, rather than changes in the environment. Every two hours, participants complete a brief test battery that includes ratings of sleepiness and mood, a reaction-time task, and short tasks that assess how fast or slow time seems to pass, how accurately they can estimate time intervals, how they respond to simple decisions, and how they judge colours. Saliva samples are collected repeatedly to measure melatonin, a hormone that indicates circadian phase. By comparing changes in behaviour, perception, and melatonin levels across the 36-hour wake period, the study aims to identify when during the circadian cycle people are most vulnerable to distortions in time perception and reduced alertness. The findings may help improve scheduling of shift work and other activities that require sustained wakefulness.
NCT06636318
Sleep deprivation is a prevalent problem in modern societies. Sleep deprivation can cause hormonal changes, such as an increase in cortisol, as well as inflammation. Animal studies have shown an increase in inflammatory cytokine production following sleep deprivation. Additionally, humans experiencing sleep deprivation may experience a decrease in natural killer cells and lymphocytes. Physicians, particularly those in surgical specialties, are often subjected to sleep deprivation as part of their medical residency training. This study hypothesizes that after 24-hour shifts, there is an increase in inflammatory response and impairment of the immune response against unspecific activation. This proposal aims to provide insight into the impact of sleep deprivation on the immune system of surgery residents by characterizing the phenotype and function of immune cells, as well as their correlation with biometric data.
NCT05588934
This clinical trial will be a comparison between personalized recommended caffeine dosing regimen versus the standard recommended caffeine dosing regimen for sustaining performance during sleep deprivation and minimizing side effects and subsequent sleep disruption. The questions this study aims to answer are: Whether the personalized caffeine recommendations improve vigilance, sleepiness, and cognition after total sleep deprivation, compared to standard recommendations; Whether the personalized caffeine recommendation better addresses the physical and emotional side effects of total sleep deprivation, compared to standard recommendations; And whether personalized caffeine recommendations aids in better recovery sleep after total sleep deprivation, compared to standard recommendations. Participants will be asked to: 1. Complete a 13-day at-home portion, wearing an actigraph watch to measure activity and sleep, and complete motor vigilance tests up to six times a day. 2. Complete a 4-day in-lab portion, where participants will have to complete one night of baseline sleep, undergo 62-hours of total sleep deprivation, and then complete one night of recovery sleep. 3. During the in-lab portion of the study, participants will be asked to complete more motor vigilance tests. Researchers will be comparing the personalized caffeine recommendation group against the standard caffeine recommendation to see if it is better at addressing each of the main questions.
NCT05381532
This study is designed to assess how healthy premenopausal women respond to different patterns of sleep loss at different times in the menstrual cycle.
NCT06492109
Sleep plays a role in cognitive processes such as memory processing, attention processing, and overall cognitive function. In recent years, the bidirectional relationship between sleep loss and aging, as well as related neurodegenerative diseases, has garnered widespread attention. Sleep disorders are a typical clinical manifestation of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease and are closely related to the progression of these diseases. However, current research has yet to fully elucidate the physiological responses to sleep loss across different ages and cognitive levels, as well as the association and molecular basis between sleep loss, aging, and neurodegenerative diseases. This study aims to comprehensively characterize the transcriptional and metabolic changes in peripheral blood under sleep loss in populations of different ages and cognitive levels using multi-omics approaches and to preliminarily explore the role of sleep loss in aging and AD.
NCT07032441
Study Design This study is a prospective cohort design conducted at Zhongshan Hospital affiliated with Fudan University. It will involve systematic assessments of sleep quality, nutritional status, and associated clinical outcomes in adult ICU patients over a defined observation period. Sample Size: An estimated 150 adult patients (≥18 years) will be recruited from the ICU. Assessments 1. Sleep Quality Assessment: 1. Polysomnography (PSG): Sleep quality and duration will be quantified using PSG, which records brain waves, blood oxygen levels, heart rate, and breathing, as well as eye and leg movements. This will provide a comprehensive picture of sleep architecture and disturbances. 2. Sleep Quality Index: In addition to PSG data, the Pittsburgh Sleep Quality Index (PSQI) will be administered to assess subjective sleep quality, sleep latency, duration, habitual sleep efficiency, sleep disturbances, and daytime dysfunction. 2\. Nutritional Status Evaluation: 1. Nutritional Risk Screening Tools: The Nutritional Risk Screening (NRS-2002) and the Malnutrition Universal Screening Tool (MUST) will be applied to assess nutritional risk and identify malnutrition. 2. Biochemical Assessment: Blood samples will be collected to measure biochemical indicators such as serum albumin, transferrin, prealbumin, and other relevant markers of nutritional status. 3. Anthropometric Measurements: Body mass index (BMI) and muscle mass assessments will be conducted using bioelectrical impedance analysis (BIA) or dual-energy X-ray absorptiometry (DEXA) to quantify body composition. 3\. Physiological Monitoring: 1. Continuous monitoring of vital signs, including heart rate, blood pressure, and respiratory rate, will be performed. 2. Assessment of immune function through laboratory tests, including white blood cell count and levels of inflammatory markers (C-reactive protein). 4\. Complications Tracking: 1\. Data on complications such as infections, delayed wound healing, and respiratory failure will be systematically recorded throughout the ICU stay. This study aims to elucidate the complex interplay between sleep deprivation and malnutrition in ICU patients. By identifying key associations and influencing factors, we hope to inform targeted clinical interventions that can improve patient care, recovery, and quality of life. The findings will serve as a foundation for future research exploring the intricate relationships between sleep and nutritional status in critical care settings.
NCT06606626
Introduction: Despite the awareness of the importance of sleep in our lives, especially for athletes, the consequences of poor rest on sports performance are not well understood. Furthermore, the interaction between complete and partial sleep deprivation over one night and sleeping the usual hours for each person remains unclear. Objectives: The aim of this study is to evaluate the effects of sleep deprivation on the production of strength, power, and muscular endurance according to sex (men vs. women) and type of exercise (bench press vs. squat). Additionally, the study will analyze the effects of sleep deprivation on perceived fatigue, mood, dietary habits, electrical activity, resting metabolic rate (RMR), and maximal fat oxidation (MFO).
NCT04273841
While the negative impact of sleep deprivation on cognitive processing and the partial reversal of this phenomenon by caffeine are well known, the types of cognitive processing previously studied have been limited to simple, straight-forward laboratory tasks. It is unclear how sleep deprivation and caffeine affect performance on operationally relevant complex cognitive tasks, like those encountered by working professionals such as doctors. This study aims to uncover how sleep deprivation and caffeine impact two types of clinical reasoning processes encountered by physicians on a daily basis. Previous work from members of our team investigated diagnostic reasoning in medical professionals and discovered that brain activation in executive processing areas was modulated by self-reported sleepiness and burnout and level of expertise (Durning, Costanzo, et al., 2013; Durning et al., 2014, 2015). The current study aims to expand upon those findings by also investigating a potentially more complex type of clinical reasoning, i.e. therapeutic reasoning, and directly manipulating sleep and caffeine use in a controlled sleep laboratory. Medical students, residents, and board-certified physicians will undergo thirty-seven hours of sleep deprivation and ten hours of sleep recovery in the sleep laboratory. During two FMRI scan sessions we will present high-quality validated multiple-choice questions on common patient situations in internal medicine to participants to explore brain activity during therapeutic reasoning compared with diagnostic reasoning. One FMRI scan will occur following a night of sleep deprivation, and another scan will occur following a night of recovery sleep. Additionally, half of the participants will receive caffeine gum during the sleep deprivation period, while the other half will receive placebo gum. This design will allow us to study the effect of sleep deprivation and caffeine on the neural correlates of diagnostic and therapeutic reasoning and performance in general.
NCT06075914
Sleep deprivation is a major problem in military populations. Some major consequences of sleep loss are inability to concentrate, poor work efficiency, and increase in errors during daily tasks. Ketogenic supplementation is speculated to alleviate some sleep deprivation issues via action of ketones. Ketones are small molecules that appear in the blood when following a ketogenic diet or consuming ketone supplements. The goal of this project is to find out if diet and/or ketones can improve sleep deprivation detriments over 5 days of sleep restriction (-50% from habitual sleep).
NCT05531734
To develop an easy-to-use measurement tool for monitoring fatigue and alertness, particularly in sleep-deprived subjects.
NCT03019133
The goal of the project is to determine the effects of noise masking and noise reduction on stress related physiological parameters in critically ill patients admitted to the intensive care unit.
NCT06792656
International students often face high levels of stress, leading to mental health conditions, from factors including cultural and social change, educational system, financial insecurity and family responsibilities. Barriers in seeking support for mental health include stigmatisation and high costs. Single psychotherapy sessions are often unaffordable and pharmaceuticals are often associated with adverse side effects having limited efficacy. Hence, alternative approaches and therapies are needed to manage students' wellbeing. Forest Therapy offers a low-risk lifestyle activity, which is beneficial to physical and mental health through nature exposure and increased social connection. Thus, this research project aims to investigate to which degree guided Forest Therapy sessions may help to prevent or alleviate stress among international students in Victoria. Free Forest Therapy sessions will be offered to international students at the Royal Botanic Gardens Melbourne which is centrally located and can easily be reached by foot, car, bike or Public transport. The sessions will be offered at different dates/times during August, September and October 2024. Next to participating in the guided Forest Therapy sessions, brief surveys will be administered before and after each session which are optional.
NCT04214184
This protocol will increase sleep duration in participants who maintain less than 6 hours sleep per night, to target the recommended 7 hours of sleep per night. The focus of this study is determine how increasing nightly sleep duration in these individuals who maintain less than 6 hours sleep per night changes their plasma metabolome and insulin sensitivity. The primary outcome will examine changes in branched-chain amino acids and the secondary outcome will examine changes in insulin sensitivity. The investigators will also determine if changes in plasma metabolites can be used as a biomarker to discriminate between adequate versus insufficient sleep.