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Showing 1–24 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Metabolic chamber Clear all
Withdrawn No phase listed Observational Accepts healthy volunteers

Gas Kinetics and Metabolism in Anesthesia During Non Steady State

NCT00225381
View directory record Official record
Conditions
Anesthetized Healthy Patients (ASA 1 or 2) in the Supine Position, Excluding Head, Neck and Head Surgeries, Anesthetized Patient With Severe Systemic Disease (ASA 3 or 4)
Interventions
connection of measuring device to anesthesia circuit, drawing of blood sample through an arterial line, placed according to clinical criteria by primary anesthesia team, changing operating room bed position (head down and up position), adding PEEP during anesthesia, placement of esophageal Doppler for cardiac output measurements, Humidity sensor, A mixing chamber (bymixer), Pneumotachometer cuvette, Mass spectrometer sampling port
Device · Procedure
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Mar 22, 2021 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Results available

Metabolic Mapping and Cardiac Resynchronization

NCT03420833
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac resynchronization therapy pacemaker (CRT-P)
Device
Lead sponsor
Yong-Mei Cha
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Development of a Novel Method to Measure Insulin Sensitivity in Humans: A Pilot Study

NCT04774081
View directory record Official record
Conditions
Insulin Sensitivity
Interventions
24h Continuous glucose monitoring and urinary C-peptide collection
Device
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 13, 2022 · Synced Sep 8, 2026, 5:31 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Breathe Light Study

NCT01976455
View directory record Official record
Conditions
Over-eating, Obesity
Interventions
20% fewer calories, 40% fewer calories
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Novel Approach to Assess Metabolic Flexibility in a Respiratory Chamber

NCT03839641
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
High fat meal, Low fat meal
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Sep 8, 2026, 5:31 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Studying Phenotypic Risks for Obesity and Underlying Traits in Young Infants

NCT07096011
View directory record Official record
Conditions
Infant Body Composition and Metabolism, Metabolism, Energy Expenditure, Infant Formula, Human Milk, Breast Milk, Metabolic Flexibility
Interventions
Meal Test - Human Milk, Meal Test - Infant Formula
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
2 Weeks to 16 Weeks
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Energy Expenditure Responses to Different Temperatures

NCT01568671
View directory record Official record
Conditions
Obesity, Normal Physiology
Interventions
Room temperatures
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 75 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Processing on Food Reward

NCT06017986
View directory record Official record
Conditions
Metabolic Diseases
Interventions
Ultra-processed food - Picture Set Meal, Minimally Processed Food - Picture Set Meal
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 45 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Energy Expenditure and Substrate Utilization During Acute Under- and Over-feeding

NCT01740765
View directory record Official record
Conditions
Obesity
Interventions
24-hour energy expenditure
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 3, 2012 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

The Effects of Exenatide (Byetta ) on Energy Expenditure and Weight Loss in Nondiabetic Obese Subjects

NCT00856609
View directory record Official record
Conditions
Weight Loss, Obesity
Interventions
Byetta (exenatide), Weight loss, Metabolic Chamber, Placebo
Drug · Behavioral · Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 55 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 3, 2019 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of ASEA on Energy Expenditure and Fat Oxidation in Humans

NCT01884727
View directory record Official record
Conditions
Obesity
Interventions
Salt Water, ASEA water
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Sep 8, 2026, 5:31 PM EDT
Withdrawn Not applicable Interventional

The Use of Hyperbaric Oxygen to Increase the Blood Supply in the Injured, But Still Alive Tissue, Around an Old Stroke

NCT01985100
View directory record Official record
Conditions
Ischemic Cerebrovascular Accident
Interventions
hyperbaric oxygen chamber
Other
Lead sponsor
John Davidson
Other
Eligibility
50 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 26, 2017 · Synced Sep 8, 2026, 5:31 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Experimental Approach to Test Predictions of Body Weight Regulation Models

NCT06309576
View directory record Official record
Conditions
Obesity, Underweight
Interventions
Fasting-refeeding cycle
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 8, 2026, 5:31 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Impact of Metabolic Flexibility on Changes in Metabolic Health

NCT06340321
View directory record Official record
Conditions
Obesity, Metabolic Syndrome
Interventions
Metabolic flexibility in the fasted state, Metabolic flexibility in euglycemic-hyperinsulinemic clamp, Metabolic flexibility in the metabolic chamber
Diagnostic Test · Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
20 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 3, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Role of Altered Nutrient Partitioning in Food Reward

NCT05200845
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Conditioned Stimulus + (CS+): Flavored beverage solution with 75 calories of sucrose, Conditioned Stimulus - (CS-): Flavored beverage solution with sweetness-matched sucralose, High-Fat Test Meal Inside a Metabolic Chamber, High-Carbohydrate Test Meal Inside a Metabolic Chamber, fMRI Scan
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Phase 1 Interventional

The Pathophysiology of Orthostatic Hypotension

NCT00748059
View directory record Official record
Conditions
Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
Interventions
Standing or upright tilt, Microneurography, QSweat, neck cuff stimulation, phenylephrine,isoproterenol,nitroprusside,propranolol,edrophonium,atropine,tyramine, clonidine,yohimbine,metoclopramide,alpha-methyldopa, BodPod, Eye exam, Sleep study, Pain response testing, Metabolic chamber, Brain function studies, Bicycle Exercise Test
Procedure · Device · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
12 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Impact of the Physiological Response to Sugar on Brain Activity and Behavior

NCT06015490
View directory record Official record
Conditions
Food Preferences, Appetitive Behavior
Interventions
Sucrose drink, Glucose drink, Fructose drink
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 45 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Results available

Food Intake Response to Short-Term Modifications of Metabolism in Humans

NCT02939404
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Cold exposure, Normal temperature, Fixed diet, Ad libitum diet, Fasting
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 3, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise Intensity, Metabolic Rate and Insulin Sensitivity

NCT01879891
View directory record Official record
Conditions
Healthy Women
Interventions
Aerobic
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 42 Years · Female only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1995
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 24, 2016 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Validating a Novel Approach to Assess Metabolic Flexibility in a Respiratory Chamber

NCT05110274
View directory record Official record
Conditions
Metabolism
Interventions
Overnight Metabolic Flexibility, Clamp Metabolic Flexibility
Procedure
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Sep 8, 2026, 5:31 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sedentary Behavior in African Americans

NCT00907465
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 3, 2012 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of Human Non-Shivering Thermogenesis and Basal Metabolic Rate

NCT01950520
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Propranolol, Pindolol, Dantrolene, Magnesium Sulfate, Caffeine, Qsymia, Topiramate, Phentermine, Naltrexone, Mirabegron 50mg, Mirabegron 200mg, Placebo Cohort 1, Placebo Cohort 2, Placebo for Mirabegron
Drug · Behavioral
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 35 Years · Male only
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Sep 8, 2026, 5:31 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Nitric Oxide Bioavailability and Early Life Stress (NO-Stress)

NCT02115724
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Antioxidant cocktail, Biopsy, Placebo, NMD; 0.4mg sub-lingual nitroglycerin spray
Dietary Supplement · Other · Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 40 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2027
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 8, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Black Pepper on Energy Expenditure and Substrate Utilization

NCT01729143
View directory record Official record
Conditions
Obesity
Interventions
24-hour energy expenditure and substrate utilization
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 5, 2016 · Synced Sep 8, 2026, 5:31 PM EDT