| Recruiting | Energy Dense Fueling for Cold-Weather Operations Cold Exposure | N/A | 2026-02-14 |
| Recruiting | Muscle Response to Different Amounts of Dietary Protein During Leg Immobilization Muscle Disuse, Muscle Disuse Atrophy | N/A | 2025-09-01 |
| Not Yet Recruiting | The Effects of Repeated Operational Stress and Limited Recovery on Resilience Capacity Sleep, Inadequate, Energy Deficit, Iron Absorption | N/A | 2025-05-01 |
| Enrolling By Invitation | Physiological Responses to Heat Stress During High-risk Events Thermoregulation | — | 2025-05-01 |
| Recruiting | Influences of Long-acting Reversible Contraceptives on Iron Status and Physiological Responses to Extreme Envi Contraception, Iron Deficiencies | — | 2024-11-01 |
| Completed | Chronic Exercise With Overdressing Heat Acclimation and Thermotolerance | N/A | 2024-10-28 |
| Active Not Recruiting | The Influence of Race and MitoQ Supplementation on Skin Blood Flow in the Cold Cold Exposure | N/A | 2024-09-16 |
| Withdrawn | The Effects of Semaglutide on Body Composition and Performance in Military Personnel Obesity | Phase 4 | 2024-08-01 |
| Recruiting | Bioavailability of Ration Items Containing Tart Cherry Extract Bioavailability | N/A | 2024-06-14 |
| Completed | Recovery Protein Nutrition as a Countermeasure for Anabolic Resistance Following Sleep Loss Sleep, Inadequate | N/A | 2024-03-21 |
| Completed | Effect of Ration Formulations on Warfighter Energy Balance and Physical Performance During a Field Training Ex Healthy Volunteers | N/A | 2024-02-22 |
| Completed | Molecular Mechanisms Underlying Anabolic Resistance to Protein Intake During Muscle Disuse Atrophy, Disuse, Muscle Atrophy, Muscular Disorders, Atrophic | N/A | 2024-02-20 |
| Recruiting | Optimized Carbohydrate Fueling to Enhance Physical Performance During Energy Deficit Energy Supply; Deficiency | N/A | 2024-02-01 |
| Completed | Influence of Caffeine on Psychomotor Vigilance and Carbon Dioxide Tolerance During Graded Hypercapnia Hypercapnia | N/A | 2023-11-09 |
| Completed | High Altitude Muscle Recovery High Altitude | N/A | 2023-10-01 |
| Completed | Effect of Short-chain Fatty Acids on Aerobic Endurance Aerobic Endurance, Metabolism | N/A | 2023-07-21 |
| Completed | Acute Exercise With Overdressing Heat Stress, Exertional, Heat Acclimation and Thermotolerance | N/A | 2023-06-22 |
| Completed | Effects of Pioglitazone on Exogenous Carbohydrate Oxidation During Steady-State Exercise at High Altitude High Altitude | Phase 4 | 2023-03-01 |
| Completed | Effects of Varying Energy Deficits on Protein Turnover at Rest and Carbohydrate Oxidation During Steady-state Energy Supply; Deficiency, Severe, Energy Supply; Deficiency, Stress, Physiological | N/A | 2022-08-16 |
| Completed | The Effects of Cold Adaptation on Skin Blood Flow, Hand Function, and Comfort in Healthy Adults Cold Exposure | N/A | 2022-08-01 |
| Completed | Prebiotic and Probiotic Modulation of the Gut Microbiota-gut-brain Axis During Acute Stress Stress Physiology | N/A | 2022-07-06 |
| Completed | Effects of Energy and Physical Density Manipulation on Appetite Appetite, Eating Behavior | N/A | 2022-07-05 |
| Active Not Recruiting | Pharmacological Countermeasures for High Altitude Hypobaric Hypoxia | Phase 4 | 2022-05-27 |
| Recruiting | Intravenous Iron Effects on Performance at High Altitude Hypoxia | Phase 4 | 2022-04-15 |
| Completed | Physiological Response to Protein and Energy-enhanced Food Products During Winter Military Training Military Operational Stress Reaction, Malnutrition (Calorie), Weight Loss | N/A | 2022-03-13 |
| Completed | The Effects of NSAIDs on Bone Metabolism Following Exercise Bone Resorption, Stress Fracture, Bone Injury | Phase 1 | 2022-02-15 |
| Completed | Influences of Female Sex and Reproductive Hormones on Physiological Aspects of Heat Acclimation Heat Stress, Exertional | N/A | 2021-10-01 |
| Completed | Influence of Graded Hypercapnia on Endurance Exercise Performance Hypercapnia | N/A | 2021-09-10 |
| Unknown | Influence of Wet Clothing on Thermal Protection Low Body Temperatures | N/A | 2021-09-02 |
| Completed | Impact of Erythropoietin on Hematological Adaptations and Physical Performance Exercise-Induced Anemia, Physical Performance | Phase 4 | 2021-09-01 |
| Unknown | Ketone Supplements and Substrate Oxidation and Physical Performance Ketosis, Glucose Metabolism | N/A | 2020-11-01 |
| Completed | Effects of Essential Amino Acid-enriched Whey and Carbohydrate Co-ingestion on Protein Kinetics Energy Deficit | N/A | 2020-09-09 |
| Unknown | Influence of Body Weight and Composition on Immune Recovery BMI/Body Composition | — | 2020-09-01 |
| Unknown | Cocoa-rich Bioflavanol Supplementation Effects During Cold Exposure Cold Exposure, Manual Dexterity, Gut Microbiome | N/A | 2020-01-13 |
| Completed | Gut-microbiota Targeted Nutritional Intervention for Gut Barrier Integrity at High Altitude Gastrointestinal Injury, Acute Mountain Sickness | N/A | 2019-10-06 |
| Completed | Effects of Protein Quality on Post-exercise Skeletal Muscle and Whole-body Protein Kinetics During Energy Defi Whole-body Protein Balance, Muscle Protein Synthesis | N/A | 2019-04-25 |
| Completed | Effects of Severe Negative Energy Balance on Inflammation Inflammation | N/A | 2019-02-13 |
| Completed | High Altitude and Exogenous Carbohydrate Oxidation Glucose Metabolism, High Altitude | N/A | 2018-11-28 |
| Completed | Acetazolamide and Exercise Performance at Altitude Hypoxia, Exercise Performance, Cognitive Function | EARLY_Phase 1 | 2018-10-10 |
| Completed | Essential Amino Acids and Protein Kinetics During Caloric Deprivation Muscle Protein Synthesis, Whole-body Protein Balance | N/A | 2018-09-01 |
| Completed | Calcium Kinetic Responses to Exercise Nutritional Status, Bones | N/A | 2018-06-16 |
| Completed | Nutrition Intervention to Promote Immune Recovery From Sleep Restriction Sleep Restriction | N/A | 2018-02-12 |
| Completed | Carbohydrate Availability and microRNA Expression Glycogen Depletion | N/A | 2017-08-01 |
| Completed | Postprandial Glycemic Response to Polyphenol-fortified Snack Bars Blood Sugar Response | N/A | 2016-03-01 |
| Completed | Substrate Utilization, Exercise Performance, and Skeletal Muscle Response to Energy Deficit and Altitude Accli Weight Loss, Other Effects of High Altitude | N/A | 2016-03-01 |
| Completed | Evaluation of Calcium and Vitamin D Supplementation During Marine Corps Training Nutrition Status, Bone Health | N/A | 2015-07-01 |
| Completed | Efficacy of a Once Daily Calcium and Vitamin D Fortified Food Product to Improve Bone Microarchitecture Bone Alteration, Dietary Modification | N/A | 2015-04-01 |
| Completed | MRE Consumption and Gut Health Gastrointestinal Tract | N/A | 2015-04-01 |
| Completed | Lean Body Mass Response to Higher-protein Diets During Winter Military Training Body Weight | N/A | 2015-01-01 |
| Completed | Effects of Dehydration on Neuromuscular Performance and Sympathetic Control of Cardiovascular Function Dehydration Hypertonic, Isotonic Dehydration | N/A | 2014-10-31 |
| Completed | Effects of Protein Supplementation on Lean Body Mass Recovery From Extreme Military Training Military Operational Stress Reaction, Malnutrition (Calorie), Weight Loss | N/A | 2014-01-01 |
| Completed | Nutrition Interventions to Support the Immune System in Response to Stress Mitigation of Immune Function Decrements in Response to Stress | N/A | 2014-01-01 |
| Completed | Bioavailability of Encapsulated Omega-3 Fatty Acids Bioavailability of Omega-3s in Military Rations | N/A | 2013-09-01 |
| Completed | An Environmental Intervention to Encourage Healthy Food Choices Dietary Habits, Health Knowledge, Attitudes, Practice | N/A | 2013-08-01 |
| Completed | Effect of Tyrosine on Behavioral, Physiological and Nutritional Status During Survive, Evade, Resist, Escape ( Response to Severe Stress | N/A | 2013-05-01 |
| Completed | Skeletal Muscle Response to Amino Acids and Load Carriage Exercise Muscle Loss, Muscle Anabolism, Muscle Performance | N/A | 2012-10-01 |
| Completed | Optimizing Vitamin D Status During Initial Military Training Bone Health, Nutrition Status | N/A | 2012-06-01 |
| Completed | Brain Energy and Cognition Energy Restriction, Sleep Deprivation | N/A | 2012-06-01 |
| Terminated | Induced Changes in Ventilatory Responsiveness and Altitude Exposure Effects of High Altitude, Hypoxia, Inadequate or Impaired Breathing Pattern or Ventilation | Phase 4 | 2010-11-01 |
| Completed | Effects of Dietary Protein on Musculoskeletal Health During Calorie Deficiency Weight Loss, Muscle Loss, Bone Loss | N/A | 2010-09-01 |
| Completed | Combined Effects of Energy Density and Eating Rate on Appetite Appetite | N/A | 2009-12-01 |
| Completed | Effect of Tyrosine Supplementation on Cognitive Performance and Mood During Military Stress Reaction to Severe Stress, Unspecified | N/A | 2009-07-01 |
| Completed | Human Hydration Status Monitoring Dehydration | N/A | 2009-01-01 |
| Completed | Zinc Supplementation to Reduce Diarrhea Rates in Adults in Western Kenya. Diarrhea, Malaria | Phase 2 / Phase 3 | 2007-07-01 |
| Completed | Essential Amino Acids Supplementation and Muscle Protein Synthesis Muscle Loss, Muscle Anabolism | Phase 1 / Phase 2 | 2007-05-01 |
| Completed | An Iron-containing Food Product for the Prevention of Diminished Iron Status in Soldiers Iron Deficiency, Iron Deficiency Anemia | N/A | — |