View clinical trials related to Healthy Participants.
Filter by:The purpose of the study is to determine whether a short psychological intervention aiming at optimizing expectations is able to foster positive emotions and whether an intervention inducing positive emotions is able improve participants' expectations. Furthermore, the investigators will examine whether both interventions are effective in buffering the stress response after an acute stressor in a healthy sample compared to a control condition.
Patients with severe respiratory diseases such as chronic obstructive pulmonary disease (COPD) or obesity-hypoventilation syndrome (OHS) can benefit from having non-invasive ventilation (NIV). Non-invasive ventilation consists of a machine (ventilator) that is blowing air through a mask. NIV provides patients with a bigger expansion of their lung when they are breathing. This better expansion helps patients to have more oxygen and less waste gas (or carbon dioxide) in their body. These improvements enhance survival and quality of life. In order to provide appropriate ventilation for each patient, the ventilator can generate different types of blowing: - Continuous positive airway pressure (CPAP) which delivers a constant pressure to the mask - Pressure support ventilation (PSV) which delivers a constant pressure to the mask and, on top of that, delivers more pressure when the patient begins to breathe in. - Pressure control ventilation (PCV), which is similar to PSV, but use a fixed time to generate the flow when the patient begins to breathe in. These different types of blowing have consequences on patient comfort as well as on the improvement of their ventilation. To assess the improvement of the ventilation, the investigators currently use blood tests, however, these reflect overall output and may miss more subtle changes in breathing that could affect how patients feel. Electrical impedance tomography (EIT) is a new technology that involves wearing a belt of sensors around the chest that provides information on how well the lungs are being filled with air by the ventilator. It allows a non-invasive assessment of the effect of NIV onto lung ventilation in real-time. The investigators hope to use the EIT technology to assess in real-time patients lung ventilation when they are using the NIV. The investigators hope that EIT will provide them with information on which type of blowing is more effective and more comfortable than the others.
Background: One treatment of Muscle trigger points (MTrPs) is deep dry needling (DN) with the purpose of obtaining local twitch responses (LTRs), which are highly effective in releasing MTrPs. In DN procedures the mechanisms associated with LTRs and the LTR intensities required for optimal clinical results are poorly understood, especially in relation to range of motion after intervention. Therefore, evaluating the intensity of LTRs is relevant for implementing DN in different clinical settings, such as in patients with muscular or neurological dysfunctions. One way to assess muscle contractions and LTRs is through ultrasound video analysis. The aim of this report was to evaluate the reliability of semi-automatic LTR intensities tracking during dry needling by assessing ultrasound signals with an image processing method, in addition to evaluating the relationship between LTR intensities and muscle elasticity. Method: Young males without signs or symptoms of musculoskeletal pain were included. Primary outcome measure was the LTR intensities determined by percentage change of muscle thickness. The secondary outcome measures were the muscle elasticity of medial gastrocnemius and hamstring, previous and posterior DN in both lower limbs for each subject. Three LTRs, detected by a physical therapist and ultrasound assessment, were induced by inserting a filament needle into muscle latent trigger points in medial gastrocnemius. The intensities of LTRs were measured by assessing ultrasound images using an optical flow method and through comparisons with manual detection.
The purpose of this study is to determine the effects of concomitant administration with fluconazole, itraconazole, and rifampin on the pharmacokinetics (PK) of a single 20-mg dose of avatrombopag in healthy participants.
The study is a randomized clinical trial that is assessing the effects of sensory training on pain modulation, cognition, and physical endurance (time to fatigue) in healthy participants
Children are particularly vulnerable to respiratory virus infections, especially influenza. Vitamin A & D deficiencies are associated with vulnerability to infectious diseases of the respiratory tract. The central hypothesis of this protocol is that vitamin supplements will enhance antibody responses toward the flu vaccine in children. Children, 2-8 years old, will be randomized to receive influenza virus vaccine with a vitamin A+D supplement or influenza virus vaccine with placebo. Children will be tested for vitamin levels and immune responses before and after influenza virus vaccinations to determine if vitamin supplementation improves the influenza virus vaccine-induced immune response. PRIMARY OBJECTIVE: - To assess the vaccine-induced and total antibody (including IgG and IgA) response after influenza virus vaccine administration and IgA/IgG plus IgA/IgM ratios at 28 and 56 days in sera SECONDARY OBJECTIVE: - To assess the neutralizing response toward influenza virus vaccine in the sera.
The purpose of this study is to determine if hydroxychloroquine (HCQ) is safe and effective for the prevention of future onset of rheumatoid arthritis (RA) in individuals who have elevations of an autoantibody, anti-cyclic citrullinated peptide (anti-CCP3). The following recruitment strategies will be employed towards identifying healthy subjects with elevated anti-cyclic citrullinated peptide (anti-CCP3) levels: -Pre-screening: - first degree relatives of patients with rheumatoid arthritis (RA); - subjects at health-fairs; and - identification of subjects with elevated anti-CCP3 levels in the absence of inflammatory arthritis in rheumatology clinics.
This is a randomized, double-blind, placebo- and active-controlled, 4-period crossover study of lemborexant in healthy adult and elderly subjects to evaluate driving performance
The scientific goal of this experiment is to evaluate the performances of our three-dimensional digital model by comparing its prediction computed from underwater data to posture observed during real weightlessness during parabolic flight.
The purpose of this study is to collect serum samples to evaluate serologic assays and to establish proficiency panels for serologic assays used for assessment of post vaccination immune response after intramuscular (IM) vaccination with Norovirus GI.1/GII.4 bivalent virus-like particle (VLP) vaccine.