View clinical trials related to Oxygen Consumption.
Filter by:Coronavirus-2019 (COVID-19) is a new virus that emerged in December 2019 and spread quickly all over the world. Problems such as hypoxia, dyspnea, increased fatigue, decreased exercise capacity and respiratory muscle strength occur in COVID-19 patients.In addition, abnormalities in skeletal muscles due to systemic inflammation, mechanical ventilation, sedation and prolonged bed rest in hospital and intensive care patients cause decreased exercise capacity.
Aim of this prospective, interventional, single-center, randomized study is to evaluate the efficacy and safety of intermittent hypoxic-hyperoxic training (IHHT) as a rehabilitation method in patients with cardiovascular pathology in the early period after coronavirus infection. The study will include 60 patients with cardiovascular pathology who underwent confirmed by laboratory tests COVID-19 infection 1-3 months ago with the degree of lung lesion CT3, CT4, who were admitted to the University Clinical Hospital No. 4 of I.M. Sechenov First Moscow State Medical University. The patients will be divided into 2 groups (intervention and control groups). Intervention group will inhale hypoxic gas mixtures (10-12% O2) followed by exposure to a hyperoxic gas mixture with 30-35% O2 5 times a week for 3 weeks, while control group will undergo a simulated IHHT. All the patients will undergo identical laboratory and instrumental testing before IHHT, after the last IHHT procedure, in a month after the last IHHT procedure and in 6 months. Estimated result of the study is to confirm or refute the hypothesis of the study that a three-week course of IHHT in patients with cardiovascular pathology in the early period after coronavirus infection can improve exercise tolerance, as well as the quality of life and psychoemotional status, and affect the dynamics of laboratory and instrumental parameters.
Perioperative cardiac output-guided goal-directed therapy (GDT) triggers fluid, vasopressor, and inotrope administration assuming that optimizing cardiac output (i.e., global blood flow) ensures adequate oxygen delivery and microcirculatory perfusion - that are usually not directly monitored during goal-directed therapy. There is increasing evidence that perioperative cardiac output-guided goal-directed therapy may reduce postoperative complications compared to routine hemodynamic management in high-risk patients having major surgery. The effect of cardiac output-guided goal-directed therapy algorithms on perioperative oxygen delivery and consumption as well as microcirculatory perfusion, however, is unknown. The investigators aim to investigate the effect of using different cardiac output-guided goal-directed therapy algorithms on perioperative oxygen delivery and consumption as well as sublingual microcirculatory perfusion compared to routine perioperative hemodynamic management in patients having major abdominal surgery with general anesthesia.
The competitive swimming and open water swimming events are scheduled for the 2024 Paris Olympic and Paralympian Games. Generally associated with a non-neglectable number of medals in the last Olympics, swimming performance depends on the swimmer's ability to manage his or her Stroke Length and Stroke Rate, where Velocity can be defined as the product of SR and SL. The optimisation of this management depends on the swimmer's ability to develop a large motor repertoire and to use the coordination mode (catch-up, opposition, superposition) best suited to the environmental constraints and opponents' adversity. These adaptations may contribute to 1) a modification of the energy expenditure or be dependent on the energy supply necessary for muscular contraction and 2) the preferential use of one or other of the metabolic pathways in the production of this chemical energy, moreover in an aquatic environment inducing particular thermal exchanges.
The overarching aim of this proposal is to examine the feasibility of the Q-NRG+ indirect calorimetry device and its agreement with (Vmax) Encore indirect calorimetry device in mechanically ventilated children. The overall hypothesis of this study is that the Q-NRG+ will provide minute-to-minute oxygen consumption (VO2) and carbon dioxide production (CO2) measurements that are in agreement with those obtained by the standard indirect calorimetry device currently used at our institution (Vmax Encore).
Exercise is a key component of obesity management. Obese subjects cannot attend or sustain exercise program because of increased general fatigue, dyspnea and muscle fatigue. And they feel more exertion when comparing with normal weight subjects. Reduced-exertion high-intensity interval training (REHIT) is a alternative method to continuous exercise programs. The investigators aimed comparing metabolic effects of REHIT and continuous exercise in young adults, in this study.
The objective of fluid challenge is to increase oxygen delivery (DO2) in order to improve/restore tissue oxygen consumption (VO2). However the fluid challenge volume to administer stills in debate, some studies recommend to administer 250 mL. Previous studies suggested that 500 mL of fluid challenge administration may improve cardiac output and oxygen delivery. The relation between the amount of fluid expansion and oxygen delivery and oxygen consumption was not yet been studied in a randomized study in critical care patients. This is the purpose of this study.
This is a non randomized study to determine the effects of Gentle Jogger(GJ), a passive jogging device on oxygen consumption in 2 postures supine and seated. Oxygen consumption measurements will be performed via indirect calorimetry in duplicate at rest ( supine and seated posture) , and repeated in duplicate during GJ (in supine and seated posture)
Albuterol is the most commonly used β agonist to treat reversible lower airway obstruction. Albuterol contains a racemic mixture of two enantiomers. Levalbuterol contains the single R form enantiomer. Levalbuterol is frequently prescribed to limit cardiovascular toxicity. The investigators sought to examine the changes in oxygen consumption (V'O2) and Heart Rate (HR) following administration of albuterol and
Noninvasive assessment of VO2 during a single session of whole body vibration and changes in blood flow caused by the acute activity.