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Showing 25–43 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: High Water Intake Clear all
Withdrawn Not applicable Interventional

Effects of Variety and Portion Size on Meal Intake of Adults

NCT05152693
View directory record Official record
Conditions
Eating Behavior
Interventions
Low variety, High Variety, Small Portion Size, Large Portion Size, With Beverage, Without Beverage
Other
Lead sponsor
Penn State University
Other
Eligibility
20 Years to 65 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 9, 2021 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Phase 2 Interventional

RECOVER-AUTONOMIC: Platform Protocol, Appendix B (Ivabradine)

NCT06305806
View directory record Official record
Conditions
Long COVID, Long Covid19, Long Covid-19
Interventions
Ivabradine, Ivabradine Placebo, Coordinated Care, Usual Care
Drug · Behavioral
Lead sponsor
Kanecia Obie Zimmerman
Other
Eligibility
18 Years and older
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Water Intervention for Thinking in Kids (WITiKids ) Study

NCT02816450
View directory record Official record
Conditions
Low Fluid Intake, Chronic
Interventions
Water Intake
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
9 Years to 10 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 30, 2018 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional

Community Partnering to Encourage Healthy Beverage Intake Through Child Care

NCT03713840
View directory record Official record
Conditions
Obesity
Interventions
Healthy Beverages in Child Care
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
2 Years to 5 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 21, 2018 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Comparison of Satiety Effects Two Commercially Available Snack Bars

NCT07227701
View directory record Official record
Conditions
Satiety
Interventions
High carbohydrate snack bar, High protein snack bar
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Phase 2 Interventional

RECOVER-AUTONOMIC: Platform Protocol, Appendix A (IVIG)

NCT06305793
View directory record Official record
Conditions
Long COVID, Long Coronavirus Disease 2019 (Covid19), Long Covid-19
Interventions
IVIG (intravenous immunoglobulin), IVIG Placebo, Coordinated Care, Usual Care
Drug · Behavioral
Lead sponsor
Kanecia Obie Zimmerman
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Juice Study: Sensitivity of Skin Carotenoid Status to Detect Change in Intake

NCT03202043
View directory record Official record
Conditions
Overweight
Interventions
High dose vegetable juice, Medium dose vegetable juice, Low dose vegetable juice, Control bottled water
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated May 15, 2022 · Synced Sep 11, 2026, 9:08 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy of a Smart Water Bottle Intervention to Increase Fluid Consumption in College Students

NCT06259799
View directory record Official record
Conditions
Dehydration
Interventions
Smart Water Bottle
Behavioral
Lead sponsor
Kennesaw State University
Other
Eligibility
18 Years to 35 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Kennesaw, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 1, 2025 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Phase 4 Interventional

Empiric Versus Selective Prevention Strategies for Kidney Stone Disease

NCT05365477
View directory record Official record
Conditions
Kidney Stones, Nephrolithiasis
Interventions
Empiric Therapy: Diet, Empiric Therapy: Drug, Selective Therapy: Diet, Selective Therapy: Drug
Behavioral · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Accelerating Post-exercise Muscle Glycogen Resynthesis in Humans: Impact of Combined Nutrient Intake and Intermittent Pneumatic Compression or Heat Therapy

NCT04371237
View directory record Official record
Conditions
Muscle Recovery, Muscle Soreness, Glycogen Depletion
Interventions
Compression sleeve, Heat therapy, Glycogen-depleting exercise session, Nutrient Intake (beverage), Skeletal muscle biopsy
Device · Other · Procedure
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
18 Years to 35 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 9, 2021 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Achieving Energy Balance in Post Partum Teens

NCT01617486
View directory record Official record
Conditions
Obesity
Interventions
BALANCE
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
12 Years to 20 Years · Female only
Enrollment
1,325 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 11, 2012 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Impact of Adequate Water Intake on Exercise Performance and Mood in Women and Men

NCT05033665
View directory record Official record
Conditions
Dehydration, Mood
Interventions
Increase water consumption, Maintain adequate water consumption
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 35 Years
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preventing Early Childhood Obesity, Part 1: Long-term Follow-up

NCT05424471
View directory record Official record
Conditions
Obesity, Water; Lack of, Childhood Obesity, Feeding Behavior, Mother-Child Relations, Dietary Habits
Interventions
Family Spirit Nurture (FSN), Control Group - Vehicle Safety
Behavioral · Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
13 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Shiprock, New Mexico
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Environmental Costs of Building Human Muscle

NCT06733857
View directory record Official record
Conditions
Greenhouse Gas Emissions, Water Use, Land Use
Interventions
VEG2, OMNI2
Behavioral
Lead sponsor
Game Changers Institute
Other
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Laguna Niguel, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Brown Adipose Tissue Activation on Insulin Sensitivity in Humans

NCT01791114
View directory record Official record
Conditions
Insulin Sensitivity, Obesity
Interventions
Cold exposure, Cold exposure plus propranolol, Thermoneutral Conditions, Cold water consumption, Tepid water consumption, Exercise, Meal consumption
Other
Lead sponsor
Rutgers University
Other
Eligibility
18 Years to 75 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 15, 2021 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CARDIA-Salt Sensitivity of Blood Pressure (SSBP)

NCT04258332
View directory record Official record
Conditions
Salt Sensitivity of Blood Pressure, Hypertension
Interventions
High Salt Diet, Low Salt Diet
Dietary Supplement
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
50 Years to 70 Years
Enrollment
281 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
Birmingham, Alabama • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

High Water Intake to Slow Progression of Polycystic Kidney Disease

NCT00784030
View directory record Official record
Conditions
Kidney, Polycystic, Autosomal Dominant
Interventions
Water
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2016 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Appalachians Together Restoring the Eating Environment

NCT02399436
View directory record Official record
Conditions
Dietary Habits
Interventions
School-Based Healthy Snacking Campaign, Community Cooking Classes
Behavioral
Lead sponsor
Mark Swanson, PhD
Other
Eligibility
Not listed
Enrollment
720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 18, 2017 · Synced Sep 11, 2026, 9:08 AM EDT
Completed Phase 1Phase 2 Interventional

Metabolic Effects of Non-Nutritive Sweeteners

NCT01200940
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Sucralose, Aspartame, Acesulfame-Potassium, Control
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Sep 11, 2026, 9:08 AM EDT