Clinical trials: Trained Athletes
Hypoxia, Erythropoiesis
Effects of Intermittent Hypoxia Training With Iron Supplementation on Red Blood Cells and Iron Levels in Trained Athletes
This study investigates how training under conditions of reduced oxygen (intermittent hypoxia) affects the body's ability to produce red blood cells and manage iron levels, compared to training under normal oxygen conditions.
- Conditions
- Hypoxia, Erythropoiesis, Iron Metabolism Disorders
- Trial name
- IHIT-IRON (NCT07720960)
- Testing
- Control group (CG), Hypoxia group (HG): trained at simulated altitudes between 4,450 and 5,850 m
- Where
- Spain
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Néstor Vicente-Salar
Reaction Time
The Acute Effects of a Dietary Supplement on Cognitive Performance in Highly Trained Athletes.
This study was designed to determine if a dietary supplement containing extracts of American ginseng, bacopa monnieri and coffee fruit can enhance cognitive performance in a population of trained athletes.
- Trial name
- NCT05926050
- Testing
- Treatment (CopaPrime+ (USANA Health Sciences)
- Where
- United States
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- USANA Health Sciences
Muscle Contractile Properties, Resistance Exercise
Foot Progression Angle and Leg Press: Vastus Medialis Contractile Responses
This study examined the interaction between rotational foot positioning during leg press and individuals' habitual foot progression angle (FPA) phenotype on the acute contractile response of the vastus medialis muscle
- Conditions
- Muscle Contractile Properties, Resistance Exercise, Foot Progression Angle
- Trial name
- NCT07546851
- Testing
- Congruent Foot Position Leg Press, Incongruent Foot Position Leg Press
- Where
- Turkey (Türkiye)
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Giresun University
Transgender Persons
Transgender Observational Performance
The study will evaluate the sports capabilities of transgender women mainly in terms of muscular strength and aerobic capacity (VO2max).
- Trial name
- TOP (NCT05337865)
- Testing
- Aerobic exercise test.
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Instituto Brasileiro de Controle do Cancer
Caffeine
Caffeine Supplementation, Resistance Training and Blood Antioxidant Status
The purpose of this study is to verify the effect of acute caffeine intake on resistance training volume and blood antioxidant status, in a randomised, double-blind, placebo-controlled crossover trial.
- Trial name
- NCT05230303
- Testing
- Caffeine supplementation
- Where
- Poland
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- The Jerzy Kukuczka Academy of Physical Education in Katowice
Citrulline, Nitrate
Long-Term Effect of Combined Citrulline and Nitrate-Rich Beetroot Extract Supplementation
Citrulline (CIT) and nitrate-rich beetroot extract (BEET) are widely studied ergogenic aids. However, both supplements have been studied in sort-term and isolated.
- Conditions
- Citrulline, Nitrate, Athletes
- Trial name
- NCT05143879
- Testing
- Citrulline, Nitrate, Nitrate plus Citrulline
- Where
- Spain
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Burgos Nutrition
Nutrition, Healthy, Muscle Damage
Early Time-Restricted Eating in Young Judo Athletes
This study investigates the effects of a 5-month early time-restricted eating (e-TRE) intervention on body composition, muscle damage biomarkers, and psychological variables in highly trained young male judo athletes.
- Conditions
- Nutrition, Healthy, Muscle Damage, Time Restricted Eating, Anxiety
- Trial name
- TRE-JUDO (NCT07671443)
- Testing
- Early Time-Restricted Eating (e-TRE)
- Where
- Tunisia
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Manouba
Sports Nutrition, Biochemical Markers
Effect of a Short-term Multi-strain Probiotic Supplementation in Endurance Athletes
The aim of this project is to evaluate and identify the effect of a short-term 2-week multi-strain probiotic (MPRO) supplementation on the exercise-associated gastrointestinal (GI) symptoms and perturbations in high level female…
- Conditions
- Sports Nutrition, Biochemical Markers, Exercise Performance, Aerobic Capacity
- Trial name
- NCT07252778
- Testing
- MPRO supplementation
- Where
- Poland
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Krzysztof Durkalec-Michalski
Healthy, Trained Athletes
Pre-exercise Ingestion of a Low Glycaemic Index Rice-based Mixed Meal Increases Fat Oxidation and Endurance Running in a Hot-humid Environment
The objective of this research is to determine the influence of low and high glycemic index Malaysian pre-exercise mixed meals on endurance exercise performance in a hot-humid environment.
- Trial name
- NCT06544252
- Testing
- Low glycaemic index rice-based mixed meal (GI value = 47), High glycaemic index rice-based mixed meal (GI value = 80)
- Where
- Malaysia
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Universiti Sains Malaysia
Mitochondrial Biogenesis, Inflammation
EFFECTS OF PYRROLOQUINOLINE QUINONE (PQQ) SUPPLEMENTATION ON NON-ENDURANCE TRAINED ATHLETES
The aim of this study was to investigate the effects of six weeks of PQQ supplementation in non-endurance-trained individuals on: 1. physiological and metabolic response during a FATmax-VO₂peak exercise test 2.
- Trial name
- NCT07148726
- Testing
- Pyrrole Quinoline Quinone (PQQ)
- Where
- Italy
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Padova
Athletic Performance
Validation of Blood Oxygen Level Test in Well-trained Athletes
Blood Oxygen Level Test (BOLT) was never scientifically validated. Therefore, we investigated the association of BOLT scores with athletic performance in well-trained athletes.
- Trial name
- NCT06236490
- Testing
- Blood Oxygen Level Test, Wingate Anaerobic Test, Cardiopulmonary Exercise Test
- Where
- Poland
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Institute of Sport - National Research Institute, Poland
Protein Requirement of Athletes
Measuring Protein Requirement Using Amino Acid Oxidation in Strength and Endurance Athletes
Our objective is to determine the dietary requirement of protein for strength and endurance exercise trained (more than 4 months training experience) individuals between 18 - 30 years of age using the indicator amino acid…
- Trial name
- NCT02621294
- Testing
- Measuring protein requirement
- Where
- Canada
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- University of Western Ontario, Canada
Athletic Performance, Postural Stability
Effects of Caffeine and Nicotine Gum on Balance Performance in Athletes
This randomized, single-blind, placebo-controlled, four-condition crossover study evaluates the acute effects of caffeine gum (~3 mg/kg) and nicotine gum (4 mg) on balance performance in healthy, trained adults.
- Conditions
- Athletic Performance, Postural Stability, Healhty
- Trial name
- NCT07254832
- Testing
- Caffeine Gum 3mg/kg, Nicotine Gum (4 mg)
- Where
- Turkey (Türkiye)
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Gülbin Rudarlı
Exercise Performance of Fit Athletes, Exercise Performance
Effect of the Combination of Nitrate and Caffeine on Critical Power In Trained Male Cyclists
This study is investigating the independent and combined effects of acute dietary nitrate and caffeine supplementation on performance during a 3-minute all-out cycling test in trained male cyclists.
- Conditions
- Exercise Performance of Fit Athletes, Exercise Performance, Cycling Performance
- Trial name
- BEET (NCT07501806)
- Testing
- Dietary Nitrate, Caffeine
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Lindenwood University
Jumping Performance, Speed
Analyzing the Impact of Three Warm-Up Durations on Physical Performance in Youth Basketball Athletes.
This study will explore how different warm-up durations (5, 10, and 20 minutes) affect performance in youth basketball players. Using a basketball-specific routine, it will measure changes in jumping, sprinting, and agility.
- Conditions
- Jumping Performance, Speed, Agility
- Trial name
- WUD-YBA (NCT07013799)
- Testing
- BasketUp Warm-up
- Where
- Spain
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- Cardenal Herrera University
Exercise-Induced Circulating Progenitor Cell Mobilization
Exercise Intensity and Circulating CD34+ Progenitor Cell Mobilization in Trained Adults
This randomized crossover study investigated whether exercise intensity influences the mobilization of circulating CD34+ progenitor cells when total external work is matched.
- Trial name
- NCT07841561
- Testing
- Higher-Intensity Work-Matched Cycling Exercise, Lower-Intensity Work-Matched Cycling Exercise
- Where
- Iraq
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Samarra University
Performance Enhancing Product Use
Investigating the Post-Activation Performance Enhancement Effects on Skeletal Muscles Under Varied Loading Conditions
With the advancement of sports science, Post-Activation Potentiation (PAP) has become a focal point of research, garnering significant attention for its underlying physiological mechanisms.
- Trial name
- NCT06464120
- Testing
- Increasing load strength training, Constant load strength training
- Where
- China
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Universiti Putra Malaysia
Athletic Injuries
Functional and Performance Effects of a 4-week Weightlifting Program in Highly Trained Adolescent Basketball Athletes
Weightlifting is an increasingly used intervention in the sport field to improve both function and performance outcomes. However, the effects in a pediatric and adolescent population are not well described, and require further…
- Trial name
- NCT05824780
- Testing
- Exercise training
- Where
- Spain
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of Valencia
Healthy Experienced Weight Training Males
The Effects of HMB, ATP, and HMB Plus ATP on Muscle Mass, Strength, and Power in Resistance Trained Athletes
The purpose of this study is to determine the effects of 12 weeks of HMB free acid gel, ATP, and HMB free acid gel plus ATP supplementation in trained individuals during a periodized training program on skeletal muscle…
- Trial name
- NCT01508338
- Testing
- HMB, Peak ATP and HMB, ATP
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Metabolic Technologies Inc.
Healthy, Athlete
Effects of Sodium Bicarbonate on Endurance Performance
This study is investigating whether taking sodium bicarbonate, a common supplement used by endurance athletes, can improve cycling performance during prolonged exercise and in a time trial.
- Conditions
- Healthy, Athlete, Well-trained Athletes, Performance
- Trial name
- SBEP (NCT07171047)
- Where
- Austria
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Salzburg