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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Vitamin D Placebo + Exercise Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Muscle Metabolic Function

NCT02221596
View directory record Official record
Conditions
Healthy
Interventions
vitamin D, aerobic training
Dietary Supplement · Other
Lead sponsor
David Travis Thomas
Other
Eligibility
60 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 14, 2018 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional

Vitamin D for Muscle Metabolic Function in Cancer Cachexia

NCT03144128
View directory record Official record
Conditions
Cancer Cachexia, Vitamin D Deficiency
Interventions
Vitamin D, Placebo
Dietary Supplement
Lead sponsor
David Travis Thomas
Other
Eligibility
45 Years to 75 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 13, 2020 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 2 Interventional

Vitamin D3 Supplementation for Heart Failure Patients

NCT01636570
View directory record Official record
Conditions
Heart Failure, Vitamin D Deficiency, Cardiomyopathy, Congestive Heart Failure
Interventions
Placebo Comparator: Sugar Pill, Vitamin D3 (cholecalciferol)
Drug
Lead sponsor
Heidi Moretti, MS, RD
Other
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Vitamin D Supplementation on Muscle Mass and Function

NCT01199926
View directory record Official record
Conditions
Obesity, Insulin Resistance, Inflammation
Interventions
Vitamin D, Placebo
Dietary Supplement · Drug
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 14, 2015 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Ergogenic Effects of Sportlegs

NCT06371521
View directory record Official record
Conditions
Performance Enhancing Product Use
Interventions
Sportlegs, Placebo
Dietary Supplement
Lead sponsor
Christopher Bell
Other
Eligibility
18 Years to 30 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 25, 2026, 12:42 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Independent and Combined Effects of Resistance Exercise Training and β-hydroxy β-methylbutyrate Plus Vitamin D

NCT03848741
View directory record Official record
Conditions
Aging, Skeletal Muscle
Interventions
Non-Exercise Control, Resistance Exercise Training, Placebo, HMB+VitD
Behavioral · Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
45 Years to 60 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 16, 2019 · Synced Sep 25, 2026, 12:42 PM EDT
Terminated Phase 1 Interventional

Randomized Study Of Exercise And Vitamin D In Frail Elderly Subjects

NCT00249704
View directory record Official record
Conditions
Elderly, Frail
Interventions
Vitamin D + Sham Exercise, Vitamin D Placebo + Exercise, Vitamin D Placebo + Sham Exercise, Vitamin D + Exercise
Drug · Procedure
Lead sponsor
Pfizer
Industry
Eligibility
75 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
4
States / cities
Farmington, Connecticut • Hyattsville, Maryland • Roslindale, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2009 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Study on Muscle Soreness, Damage, and Performance

NCT04230226
View directory record Official record
Conditions
Soreness, Muscle, Performance Enhancing Product Use, Damage Muscle
Interventions
Pre-workout plus and protein recovery plus, Placebo
Dietary Supplement · Other
Lead sponsor
Pharmanex
Industry
Eligibility
25 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 25, 2026, 12:42 PM EDT
Not listed Not applicable Interventional

Lifestyle Intervention Program for Cognitive Impairment

NCT02741804
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
BBH-1001 Brain Health Supplement, Lifestyle Intervention, Brain Health Placebo
Dietary Supplement · Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
55 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 26, 2016 · Synced Sep 25, 2026, 12:42 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Vitamin D and Physical Activity on Bone Health

NCT01419730
View directory record Official record
Conditions
Bone Metabolism Biomarkers, Bone Mineral Density, Physical Fitness
Interventions
Vitamin D3, Physical Activity
Drug · Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 4 Interventional Results available

Maintain Respiratory Muscle Function and Reduce Pneumonia Risk in Cancer Patients

NCT03469271
View directory record Official record
Conditions
Cancer
Interventions
1,25 (OH)2 D3, Inspiratory isometric resistance training, Oral Placebo, Sham Inspiratory Isometric Resistance Training, Threshold Inspiratory Muscle Trainer (IMT)
Drug · Other · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Chronic Study on Body Composition, Training, Performance, and Recovery

NCT04230824
View directory record Official record
Conditions
Damage Muscle, Body Weight Changes, Performance Enhancing Product Use
Interventions
Pre-workout plus and Protein recovery plus, Placebo, 6-week resistance training program
Dietary Supplement · Other
Lead sponsor
Pharmanex
Industry
Eligibility
25 Years to 50 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 12, 2022 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Exercise and NutraStem (NT-020): Effects on Stem Cells

NCT01847027
View directory record Official record
Conditions
Adult Stem Cell Proliferation
Interventions
NutraStem, Placebo
Drug
Lead sponsor
University of North Texas Health Science Center
Other
Eligibility
50 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated May 28, 2019 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D2, Muscle Damage, NASCAR Pitcrew

NCT01825616
View directory record Official record
Conditions
Muscle Function, Muscle Soreness, Vitamin D Status
Interventions
Vitamin D2 mushroom powder, Placebo
Dietary Supplement · Other
Lead sponsor
Appalachian State University
Other
Eligibility
20 Years to 40 Years · Male only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
3
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 8, 2013 · Synced Sep 25, 2026, 12:42 PM EDT
Terminated Phase 4 Interventional Results available

Vitamin D Supplementation for Treatment of Heart Failure

NCT01230307
View directory record Official record
Conditions
Heart Failure
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 17, 2016 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nutritional Intervention for Age-related Muscular Function and Strength Losses-Study 2

NCT02043171
View directory record Official record
Conditions
Sarcopenia
Interventions
Placebo, HMB plus Vitamin D, Non-Exercise, Exercise
Dietary Supplement · Drug · Behavioral
Lead sponsor
Metabolic Technologies Inc.
Industry
Eligibility
60 Years and older
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 10, 2019 · Synced Sep 25, 2026, 12:42 PM EDT
Not listed Not applicable Interventional

Combined Effects of Diabetes Self-Management Education and Nutritional Supplementation on Visual Function and Retinopathy

NCT04120077
View directory record Official record
Conditions
Diabetes Mellitus, Diabetic Retinopathy
Interventions
EyePromise DVS, EyePromise DVS plus EyePromise EZTears
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years to 85 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 22, 2021 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Curves 30/30 Study

NCT04344821
View directory record Official record
Conditions
Weight Loss
Interventions
Curves Calcium, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2020 · Synced Sep 25, 2026, 12:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of Nutritional Supplementation on Physical-activity Mediated Changes in Physical Functioning Older Adults at Risk for Mobility Disability (The VIVE2 Study)

NCT01542892
View directory record Official record
Conditions
Sarcopenia
Interventions
Exercise Intervention, Supplement Intervention
Other · Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
70 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 17, 2014 · Synced Sep 25, 2026, 12:42 PM EDT