View clinical trials related to Physiological Stress.
Filter by:The investigator's plan to quantify the physiologic impact of orthopaedic surgery on the surgeon and operating team.
The aim of the study is to investigate the effects of 6- and 12- week supplementation of a bioactive whey protein concentrate drink containing dairy phospholipids on stress reactivity and recovery in healthy adults. The proposed randomised, double-blind, placebo-controlled parallel groups design methodology will assess the stress reactivity and recovery effects (both self-reported and physiological) of 40g per day of bioactive whey protein concentrate in the form of a powder that the participant will be required to mix with 350ml of water and matched placebo prior to (baseline) and after -6 week and -12 week supplementation. The trial will utilise the Multi-tasking framework (MTF) during testing visits to elicit an acute stress response within the laboratory. Self reported anxiety (STAI short-form) at multiple time points before and after the stressor will be measured as well as perceived task demand following the stressor (NASA-TLX). Physiological measurements of the stress response will also be measured through blood pressure, heart rate arability, and galvanic skin response. 150 participants will participate, aged 25-49, and self-reported as being in good health. Participants will be supplied with either the active treatment or the placebo (allocated by a randomised schedule) whilst visiting the research centre for the testing appointments, and will take treatment home to consume daily for the duration of the study. Participants will record time of taking treatment each day in a treatment diary which will be returned to the research centre, along with any unused treatment, upon completion of the study.
Three male and three female semi-professional athletes, ranging in age from 22 to 27, participated in a study that was done at Lund University in Sweden to examine their physiological responses. The temperature and relative humidity were adjusted at 40 degrees Celsius for hot, dry conditions and 31 degrees Celsius for hot, wet conditions, respectively. The participants were instructed to engage in physical activity on a treadmill within the chamber for 70 minutes, or until participants were able to continue their exercise without difficulty within the allotted period. Participants were instructed to walk (5 kph) and run (8 kph). Participants pulse rate, breathing rate, oxygen consumption, and subjective reactions were all recorded. On the basis of the Wet Bulb Globe Temperature (WBGT), a heat stress index, the American College of Sports Medicine has made certain suggestions. The technique used to determine the temperature on a Celsius scale took into account the influences of relative humidity, air temperature, wind, and direct sunlight radiation. The American College of Sports Medicine advises delaying athletic competition when the WBGT is above 28 degrees. In the climate control chamber, the trials were carried out in high-risk circumstances (28 degrees Celsius WBGT). According to the study's findings, exercise is influenced by weather, and as air temperature rises, so do the intensity of exertion and thermal feeling.
This clinical trial aims to investigate the effects of a 70-day consumption of cranberry juice on cognitive and motor accuracy, mental and physiological stress, and stress response in healthy men and women between the ages of 30 and 55 who engage in multitasking. The trial will utilize a randomized, double-blinded, placebo-controlled design. It is worth noting that studies have shown that over half of middle-aged Americans experience stress, which can lead to cognitive decline and depression. Previous clinical trials have indicated that consuming polyphenol-rich foods can have positive effects on cognitive function in humans. However, no study to date has examined the long-term effects of cranberry juice consumption on cognitive performance, mental stress, and stress response specifically in individuals engaged in multitasking. Based on this gap in knowledge, the investigators hypothesize the following: (1) chronic consumption of cranberry juice will improve cognitive and motor accuracy, as well as mental and psychological stress responses in young adults subjected to intense multitasking. (2) cranberry juice consumption will alleviate the negative consequences of frequent intense multitasking, such as fatigue, mood fluctuations, cognitive impairment, and memory issues. Additionally, it is expected to have a positive impact on stress biomarkers and neurotransmitter levels. By conducting this clinical trial, the investigators aim to shed light on the potential benefits of cranberry juice consumption in improving cognitive performance, mitigating mental stress, and positively influencing stress responses in individuals who engage in intense multitasking.
The goal of this research is to test whether certain areas of focus in breath meditation are connected with certain mental health outcomes. The main question to be addressed is whether attention placed on the breath in the belly versus the nostrils during meditation results in differences in subjective experience, respiration and heart rate. Participants will: - complete surveys - have heart rate and respiration measured - practice focused breathing Participants can expect the study visit to last for one hour.
Stress-related disorders have over the last decade increased and contributed to a worldwide disease burden. At the same time there is limited treatment access for mental health disorders, which has left many people without necessary care. However, in recent years there has been a rise in digital mindfulness interventions. Specifically, these interventions have focused on smartphone-based applications as an effective format for mindfulness training programs. Thus, the goal of this randomized controlled trial is to test the effects of three types of mindfulness programs in a population with elevated stress. The three formats of mindfulness interventions are identical in total training duration but varies in content and intervention length. Specifically, the first intervention consists of programmatic mindfulness content that progress over the course of 30 sessions with a duration of 10 min per session. The second intervention consists of single succinct breathing exercises with no programmatic content over the course of 30 sessions with a duration of 10 min per session. The third intervention consists of mindfulness-based content specifically targeted to people with elevated stress that progress over the course of 20 sessions with a duration of 15 min per session. An active control group listening to an audiobook over the course of 30 sessions with a duration of 10 min per session will be employed and a passive control group. The study will evaluate outcomes related to subjective stress, sleep quality, mindfulness and physiological effects of stress using HRV.
The goal of this clinical trial is to examine the effects of slow breathing breathing on markers of stress in healthy college aged individuals. The breathing intervention is performed for five minutes pre and post a virtual reality active shooter drill. The main question to answer is: 1) what is the impact of a controlled breathing intervention and virtual reality active shooter drill on markers of subjective and biological stress?
The objectives of this scientific expedition are: a/ Evaluation of temporal cognitive perception and collective synchronization in a temporally anomalous universe (underground environment), b/ Influence of group living on the endogenous circadian rhythmicity of the central biological clock and peripheral clocks in a "free-running" situation (absence of light/natural darkness), c/Evaluation of cognitive and physiological performance in response to exposure to an extreme environment in a natural underground cavity (cave) without access to a time indicator for 40 days, d/Correlation of cognitive, behavioral, psychological, social, neurophysiological and physiological parameters, e/ Determination of adaptation or maladaptation criteria (biological, genetic, physiological, neurophysiological, psychological and cognitive) in an isolation environment (underground) f/ Study of the evolution of collective organization, decision making and leadership in an extreme isolation and management situation.
The goal of this clinical trial is to examine the effects of caffeine, theanine and tyrosine ingestion on markers of stress in healthy college aged individuals that are exposed to a mental stress task. The main questions to answer are: 1. what is the impact of a mental stress task involving a cognitive challenge and virtual reality based active shooter scenario on markers of subjective and biological stress? 2. what is the impact of supplement ingestion (caffeine, theanine, tyrosine, analyzed separately) 40 min prior to exposure to the mental stress task?
We are conducting a proof-of-concept trial to study the impact of HRV-biofeedback, a mind-body technique designed to improve stress resilience, on the quality of life, mood, and clinical skin severity of patients with psoriasis.