View clinical trials related to Oxygen Consumption.
Filter by:Cranberry is a fruit native to North America that is widely grown in Quebec and has been shown to have the highest antioxidant capacity among the most commonly eaten fruits. Consequently, consuming cranberries prior to exercising may help to improve exercise endurance by preventing accumulation of reactive oxygen species. For aerobic endurance, in order to maintain a certain pace for a long duration, runners need to effectively neutralize reactive oxygen species. Although it is not the only component involved in running, offsetting reactive oxygen species should improve running performance. To test this, we plan to investigate the effects, both acute and chronic, of a cranberry extract on the oxygen consumption in 18-35 year old males and females. The present research project will contribute to expand our knowledge of how cranberry extract can exert a positive effect, and thus improve aerobic performance or even every day life. This project can benefit a wide range of the population, from sedentary individuals and older adults to elite athletes by providing an all-natural supplement alternative.
To advance the methodology for evaluating persons with heart disease and their maximal oxygen uptake, the primary aim of this study is to investigate the occurrence of a plateau in oxygen uptake. This plateau will be examined for the purpose of assessing VO2 max in persons enrolled in exercise-based cardiac rehabilitation. Furthermore, this study aims to investigate the age-related respiratory exchange ratio, and rating of perceived exertion, and describe their association with the presence of a plateau. Heart disease and characteristics for all participants are obtained. Participants underwent a maximal exercise test on an ergometer cycle with direct measurement of oxygen uptake to assess oxygen plateau attainment. This included measurement of the maximal oxygen uptake, respiratory exchange ratio, heart rate and the ratio of perceived exertion (BORG6-20).
Restrictive and liberal approaches to hemoglobin targets are used when deciding on red blood cell transfusions in patients who do not have acute bleeding and have a hemodynamically stable course in the intensive care unit. However, physiologic trigger points that assess tissue oxygenation when deciding on blood transfusion in patients are also among the important topics of study in recent years. In this study, the investigators will evaluate the oxygen extraction rate, which is an important indicator of the balance between tissue oxygen delivery and consumption. Whether oxygen extraction rate can be used as a trigger for blood transfusion will be determined by clinical outcomes in ICU patients. If physiologic transfusion targets are feasible, the risks of unnecessary transfusions can be avoided with individualized targets, and the decision to transfuse blood can be made without delay in patients requiring red blood cell transfusion.
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.
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.
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.
To define any changes in whole body oxygen consumption that occur following major vascular surgery (open aortic aneurysm surgery; endovascular aortic aneurysm repair; and infra-inguinal lower limb revascularisation procedures).