120 Clinical Trials for Various Conditions
Metformin is the most prescribed blood sugar (glucose)-lowering medication for patients diagnosed with type 2 diabetes mellitus (T2DM). Metformin stimulates glucose uptake in skeletal muscle similar to the effects of exercise, though, some studies report that metformin may decrease exercise capacity. The main question this study looks to answer is: • Does metformin alter exercise capacity? Participants will: * Complete 5 exercise tests on a stationary bike. * Undergo a body composition test. * Take metformin and placebo. * Complete food and symptom logs. The researchers hypothesize that: • Metformin will reduce aerobic capacity.
The purpose of this research is to study postmenopausal female masters athletes to see if they will show greater myocardial stiffness and reduced exercise capacity than premenopausal females and similarly aged male masters athletes.
The purpose of this research study is to determine the effectiveness of low dose colchicine (LoDoCo) on measures of exercise capacity, physical function, frailty, and quality of life, among patients with heart failure with chronic stable preserved ejection fraction (HFpEF) and systemic inflammation. The use of LoDoCo in this study is considered investigational as it has not been approved by the Food and Drug Administration (FDA) for the treatment of exercise capacity in patients with HFpEF. Participants will undergo a 1-day screening that includes a blood draw and physical examination. If deemed eligible for the study, participants will undergo a baseline visit within 2 weeks of screening visit that includes physical examination, exercise testing, echocardiography and completion of quality-of-life surveys. Participants will also be randomized at this visit (randomly assigned to a group) to receive either LoDoCo or placebo (inactive substance) for 3 months. Participants will be called back at 3 months for repeat physical examination, blood draws, echocardiography, exercise testing and completion of quality-of-life surveys. Each visit will take about 3 hours. Total study duration is about 3 months.
The purpose of this research is to investigate whether a home-based and health coach supported specific breathing and respiratory muscle training program improves the ability to exercise, the function of the lungs and breathing muscles, and general clinical status in people with non-cystic fibrosis bronchiectasis (non-CFB).
Patients with heart failure with reduced ejection fraction and iron deficiency will be randomized to either receive iron infusion or be in the control group. The study is looking at how iron replacement affects exercise capacity as measured by peak oxygen uptake.
The purpose of this research is to test whether participating in either a physical activity intervention or a series of educational classes will help to preserve exercise capability, heart function, brain-based activities (like memory), and quality of life. Participants will be randomized to 1 of 2 pathways: * First pathway consists of organized health workshops. These workshops are intended to provide information on topics such as proper nutrition, management of stress, sleep practices, and emphasis on a healthy lifestyle that may help the participants through cancer treatment. This pathway will also test whether stretching may help participants through cancer treatment. * Second pathway participants will take part in some unsupervised and some potentially supervised moderate activity sessions each week throughout participants' cancer treatment to take place either remotely or in person, depending on availability of facilities at the time visits are scheduled.
The study aims to assess the effect of music on the heart resulting in a change in their exercise capacity among systolic heart failure patients undergoing Cardiopulmonary Exercise testing.
In a prospective, observational pilot study of patients scheduled for an atrial fibrillation (AF) ablation at the University of Vermont Medical Center the investigators will compare exercise capacity before and four months after AF ablation.
This study will explore the effect of mutation severity on exercise capacity. Through a better understanding of the association between mutation severity and exercise capacity, clinicians will be more able to predict a given patient's level of independent functioning based on their genes, which is essential information that patients' families want to know upon diagnosis.
Studies in mice demonstrated that dietary phosphate (Pi) loading that mimic the level of US adult consumption leads to reduced spontaneous locomotor activity, exercise capacity, and reduced resting metabolic rate when in normal mice by impairing skeletal muscle mitochondrial function and fat oxidation. However, relevance of this findings in humans remains unknown.
High intensity exercise is known to improve a person's ability to learn new motor skills. The goal of this project is to evaluate if a robotic exosuit can help people who have had a stroke perform walking rehabilitation at higher intensities than they are able to without the exosuit. The investigators will measure exercise training intensity, biomarkers of neuroplasticity (e.g., brain-derived neurotrophic factor; BDNF), and motor learning when people poststroke exercise with and without the exosuit. For this protocol, exosuits developed in collaboration with ReWalk™ Robotics will be used. Aim 1: Determine the effects of a soft robotic exosuit on gait training intensity and serum BDNF in persons post-stroke completing a single bout of high intensity walking. Hypothesis 1: Exosuits will allow individuals post-stroke to (i) walk at higher intensities or (ii) walk at a high intensity for longer durations. Hypothesis 2: Training at a higher intensity, or training at high intensity for longer durations, will result in increased serum BDNF. Aim 2: Determine the effects of a soft robotic exosuit on gait biomechanics measured after a single bout of high intensity walking with versus without a soft robotic exosuit. Hypothesis 3: A single bout of high intensity walking with an exosuit will lead to demonstrably better gait biomechanics than a single bout of high intensity exercise without an exosuit.
This study intends to find out how a cloth mask may impact exercise capacity, to provide guidance for exercisers to adjust their expectations and training accordingly. The investigators plan to asses exercise capacity through estimated peak oxygen consumption (eVO2peak), oxygen saturation and level of perceived exertion during treadmill based exercise while wearing a cloth mask compared to exercising without a cloth mask. The potential significance of this study is to determine if subjects can exercise safely and if their exercise training needs to be adjusted while following the current recommendations of wearing a cloth mask in public. The degree of airflow limitation experienced will depend on the type and fit of the mask being worn, and inadequeate airflow could possibly result in CO2 re-breathing if all air was not fully discharged from the mask with each breath. This re-breathing of CO2 could potentially limit the workload leading to a detriment in performance, and increase in adverse symptoms such as dizziness, lightheadedness, chest pain or shortness of breath that does not improve with rest.
The primary objective of the study is to demonstrate that dupilumab treatment improves exercise capacity in patients with moderate-to-severe asthma. The secondary objectives of the study are: * To demonstrate that dupilumab treatment increases physical activity of daily living in patients with moderate-to-severe asthma * To demonstrate that dupilumab treatment improves pre- and post-exercise lung function in patients with moderate-to-severe asthma
This study will assess the effect of omalizumab on exercise capacity, physical activity, and sleep quality after 24 weeks of treatment in participants with moderate to severe allergic asthma. Exercise capacity will be assessed using cardiopulmonary exercise testing (CPET). Physical activity and sleep quality will be assessed with a wearable physical activity and sleep monitor. The study will consist of a 4-week screening period, a 24-week treatment period, and a 4-week safety follow-up. Approximately 60 participants will be enrolled, and omalizumab will be dosed according to the approved United States Package Insert (USPI) dosing table.
Study ROR-PH-302, ADVANCE CAPACITY, is designed to evaluate the effects of ralinepag therapy on exercise capacity as assessed by change in peak oxygen consumption (VO2) derived from cardiopulmonary exercise testing (CPET) after 28 weeks of treatment
Current American College of Cardiology/American Heart Association guidelines recommend that patients with severe degenerative mitral regurgitation be considered for mitral valve surgery. There remains a debate within the cardiology community regarding the appropriate management of patients who remain asymptomatic. In this study the investigators will perform longitudinal follow-up data with cardiac MRI to inform the prophylactic surgery vs. close follow-up debate and to better define the natural history of this condition. The investigators hypothesize, that in the majority of patients mitral regurgitation will not worsen overtime, left ventricular hemodynamics will remain stable, exercise capacity will not decline, and symptoms will not worsen during follow-up. This finding would have a significant impact on the current recommendations for treatment in patients with mitral regurgitation by supporting a conservative management approach.
To provide critical participant enrollment data necessary to complete a larger definitive clinical trial in the future.
A cross sectional study utilizing congenital heart disease patients presenting for clinically indicated cardiopulmonary exercise test. Baseline questionnaires (see below) will be administered prior to the exercise test. Exercise test data and clinical data will be recorded. Questionnaire data will be compared to clinical data in and between disease severity groups. Disease severity will be determined based on hemodynamic (not anatomic) classification according to an algorithm adapted from the European Society of Cardiology.
The overarching goal of this study is to examine cardiopulmonary and respiratory physiology pre and post PFO/ASD closure in patients who are undergoing surgical closure of their PFO/ASD.
* Evaluate for accuracy and reproducibility of data collected via the participant-operated Walk.Talk.Track. (WTT) app combined with Apple Watch during in-clinic, technician proctored 6MWT's. * Determine whether the WTT app on the Apple Watch can accurately collect information on distance traveled and heart rate (HR) during in-clinic 6MWT run by American Thoracic Society (ATS) guidelines * Determine whether participants can operate the WTT app and Apple Watch effectively to gather accurate data in a monitored and home-based setting * Prospectively monitor for changes in WTT app recorded 6MWT results following initiation of therapy in a treatment naïve cohort of PAH participants * Evaluate whether changes from baseline in 6 minute walk distance (6MWD) and heart rate recovery at one minute (HRR1) as well as other variables that have been associated with disease severity in PAH and left-sided heart disease (resting HR, heart rate variability \[HRV\], chronotropic index \[CI\]) can be identified before the 12-week follow up when comparing the treatment arm and the control arm * Evaluate whether changes from baseline in the HRR1, resting HR, HRV and/or CI are more evident in treatment responders when compared to treatment non-responders.
International, Multicentre, Parallel-group, Randomised, Double-blind, Placebo-controlled, Phase III Study Evaluating the effect of Dapagliflozin on Exercise Capacity in Heart Failure Patients with Reduced Ejection Fraction (HFrEF)
International, Multicentre, Parallel-group, Randomised, Double-blind, Placebo-controlled, Phase III Study Evaluating the effect of Dapagliflozin on Exercise Capacity in Heart Failure Patients with Preserved Ejection Fraction (HFpEF)
The purpose of this study is to evaluate the effect of treatment with omecamtiv mecarbil compared with placebo on exercise capacity as determined by cardiopulmonary exercise testing following 20 weeks of treatment with omecamtiv mecarbil or placebo
The current trial is designed to assess the safety and efficacy of sustained oral administration of inorganic nitrate in patients with severe aortic stenosis and to assess the mechanisms by which inorganic nitrate enhances oxygen uptake and exercise capacity in this population.
Peripheral arterial disease (PAD) is characterized by poor circulation in the lower extremities that often provokes claudication (leg pain, numbness, and heaviness) with physical exertion. The aim of this research protocol is to determine the effect of two non-invasive treatment modalities on leg blood flow and exercise capacity in those with PAD. Specifically, we are measuring popliteal artery blood flow (Doppler ultrasound), toe oxygen saturation, ankle-brachial index (ABI), and 6-minute walking distance (6MWD) in men and women who have intermittent claudication (Fontaine Stage II; Rutherford Category 1-2) in response to 15 or 45 minutes of lower limb heating and transcutaneous electrical nerve stimulation (TENS).
This project is an attempt to understand how Orkambi treatment affects exercise capacity and the function of the arteries in CF patients who are homozygous F508del. Our goal is to perform the exercise and vascular measurements every 3 months after a patient starts taking Orkambi.
The objective of the CAPACITY-HFpEF study is to evaluate the safety and efficacy of IW-1973 compared with placebo when administered daily for approximately 12 weeks to patients with HFpEF. The study will evaluate the effect of oral IW-1973 on peak exercise capacity in patients with HFpEF, with or without permanent or persistent atrial fibrillation.
This study will evaluate how the cardiovascular system interacts with mechanical hearts to provide blood flow to the body during exercise. Two aims are proposed: 1) to determine the impact of a mechanical heart on exercise pressor reflexes in heart failure patients; and 2) to define the primary determinant(s) of exercise capacity in heart failure patients before and after device implantation.
The purpose of this study is to determine the effects of testosterone replacement in hypogonadal men on exercise tolerance and cardiac rehabilitation after an acute myocardial infarction.
A randomized, double-blind, placebo-controlled crossover study to assess the effect of inorganic nitrite (NO2) on aerobic capacity (peak VO2) after four weeks of dosing. Approximately 100 participants will be enrolled in this 2\*2 crossover study.