Kidney Patients' exercise struggles under the microscope
NCT ID NCT02411773
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at why people with chronic kidney disease (CKD) have trouble exercising and why their blood pressure rises during activity. Researchers will measure muscle oxygen and acid levels in 110 veterans with and without CKD. The goal is to understand the body's response, not to test a new treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 110 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2015
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Veterans with Stages III and IV Chronic Kidney Disease (CKD) * Kidney transplant recipients with varying degrees of kidney function * Veterans 18-75 years old, without kidney disease, as study controls * Exercise less than 20 minutes twice per week * Willing and able to cooperate with the protocol Exclusion Criteria: * Severe CKD (estimated glomerular filtration rate (eGFR) \< 15 cc/minute) * Metabolic alkalosis (serum bicarbonate \> 28 meq/L) * Ongoing drug or alcohol abuse * Diabetic neuropathy * Any serious systemic disease that might influence survival * Severe anemia with hemoglobin (Hbg) level \< 10 g/dL * Clinical evidence of congestive heart failure or ejection fraction below 35% * Symptomatic heart disease determined by prior electrocardiogram, stress test, and/or history * Treatment with central alpha agonists (clonidine) * Uncontrolled hypertension with blood pressure (BP) greater than 170/100 mmHg * Low blood pressure with BP less than 100/50 mmHg * Pregnancy or plans to become pregnant * Current treatment with monoamine oxidase inhibitors (MAOIs) * Inability to exercise on a stationary bicycle
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Atlanta VA Medical Center
RECRUITINGDecatur, Georgia, 30033, United States
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