View clinical trials related to Physiology.
Filter by:While the acute consequences of an ultratrail are beginning to be well documented, data on the study of recovery in the aftermath of an event are much rarer. In order to overcome these various limitations, the main study of the ERUPTION-3 project is set up on the Grand Raid de La Réunion 2022 races. In the context of exercise responses, the rheological properties of blood can impact the endurance performance. In contrast to short-distance events, the study of blood rheology and red blood cells integrity in long-distance events such as ultra-endurance races is poorly documented in the literature. In the ancillary study, the work that is intended to be carried y out will complement the initial results found by a previous research on 23 runners during the Ultra Trail du Mont Blanc. This ancillary study will also be an opportunity to complete the data from the main study by studying the kinetics of biomarker recovery.
Oral functions of patients are markedly diminished immediately after orthognathic surgery, and novel approaches are needed to accelerate their recovery. The aim of this study is to examine the usefulness of weekly applications of transcutaneous electrical nerve stimulation (TENS) for this purpose, based on evidence of its effectiveness in other types of patients with muscle alterations. The main objective is to determine whether weekly TENS applications can increase the bite force and jaw opening in patients undergoing orthognathic surgery and decrease their pain and inflammation
This study will combine Duffin's rebreathing procedure with additional study procedures, such as quantitative pupillometry, that are planned for subsequent clinical studies in order to confirm feasibility and gather reproducibility data using the procedure. The reproducibility of Duffin rebreathing has been assessed previously by Mahamed and Duffin (2001) performing hyperoxic and hypoxic rebreathing procedures measured once daily for 14 consecutive days and then by Jensen et al. (2010) performing 4 pairs of hyperoxic and hypoxic rebreathing procedures in 1 day followed by 1 pair on 4 additional days separated by weeks to more than a month. The present study is an unblinded reproducibility assessment to assess variability of the ventilatory response to Duffin's rebreathing procedure. Subjects will report to the study site for screening between Days -28 to -2 and then will return to the site on Day -1 for baseline assessments and check-in. After check-in (Day -1), subjects will remain in study site for PD assessments on Day 1 and check out on Day 2. Paired rebreathing procedures (i.e., at two different isoxic end tidal PO2 [partial pressure oxygen] levels) will be performed on Day 1 at 0, 2, 4, and 6 hours. An additional pair of rebreathing procedures will be performed on Day 2 before checkout (approximately 24 hours). Subjects will not be administered any drugs in this study.
The purpose of this study is to determine whether vital signs can be extracted from video. A secondary purpose is to create a database, including raw video, of "ground truth" physiological data on human subjects in order to test current and/or future approaches developed to extract vital signs from video. This research may have an immediate impact on not only the assessment of risk for COVID-19 but also may provide a significant technological enhancement to Johns Hopkins Medicine's telemedicine capabilities.
The main endpoint is physiological rehabilitation after VATS-L under early mobilization. The secondary endpoints are exploring the effect of early mobilization on postoperative physiology. Investigators hypothesis that early mobilization is clearly advantaged to advance the physiological recovery.
The investigators will seek to determine the relationship between heart rate and middle cerebral artery (MCA) cerebral blood flow (CBF), as well as better understand the hemodynamic determinants of MCA CBF velocity. In order to manipulate heart rate, the investigators will recruit patients already scheduled for clinically indicated elective electrophysiological studies, where temporary pacing catheters placed in the right atrium can be used to artificially pace the heart at controlled rates. MCA CBF will be measured by transcranial Doppler ultrasound.
The primary purpose of this study is to show whether WBV application has antispastic effect. The secondary aim is to demonstrate whether WBV has neuromodulatory activity on increased stretch reflex and motor neuron activity, which is the basis of the pathophysiology of spasticity.Hypotheses of this study:Whole body vibration in poststroke hemiplegia reduces ankle plantar flexion spasticity. 1. WBV ; reduces plantar flexor spasticity after stroke 2. WBV decreases poststroke spasticity, by decreasing increased stretch reflex and motor neuron activity.
Patients with COPD have lower capability of activating their muscles. At the cortical level, force production is not only controlled by contralateral primary motor cortex but also by ipsilateral motor cortex. The aim of this study is to determine whether ipsilateral areas are functionally impaired in COPD.
Ibrutinib is an irreversible Bruton tyrosine-kinase inhibitor. In prospective studies, the ibrutinib efficacy in the treatment of various B-cell malignancies was established. Different ibrutinib side-effects have been found: diarrhea, arthralgia, infections, neutropenia, hypertension and increased risk of bleeding. Most of the mentioned side-effects were <3rd degree of severity and mostly didn't require dose adjustment or therapy discontinuation. Also, there was an increase in the incidence of atrial fibrillation (AFib) (6-16%). The AFib pathogenesis in this patient population is not clarified, but there are indications that ibrutinib inhibits phosphoinositide-3-kinase (PI3K)-Akt signal-pathway expressed in the myocytes. Regardless of the molecular pathogenesis, the clinical effect of ibrutinib on the myocardium, especially the left atrium, has not been studied. Hence, the aim of this study is to determine the ibrutinib effect on echocardiographic parameters of left atrial function. This study will be performed as a clinical, prospective, observational cohort study with a structured follow-up period of 12 months. All consecutive patients with hemato-oncologic diseases (including chronic lymphocytic leukemia, Mantle-cell lymphoma, Waldenstrom macroglobulinemia, etc.) prescribed with chronic ibrutinib therapy, who are able to understand and sign informed consent, will be enrolled. Primary objective is change of the left atrial function measured by the decrease of the left atrial strain deformation > 10%. Recruiting should not exceed 12 months with the minimal follow-up period of 12 months (24 months in total). Standardized statistical methods and tests will be done using SPSS Version 22.0 or newer. This unique study offers the possibility to show the long-term effect of chronic ibrutinib therapy on left atrial function assessed by transthoracic echocardiography. This observational data is needed to further refine the treatment of these patients and to prevent possible side-effects of ibrutinib which could endanger this specific patient population.
The purpose of the study is to determine the effects of giving 2 doses of brain stimulation through repetitive transcranial magnetic stimulation (rTMS) on swallowing neurophysiology (brain function) in healthy adults.