Clinical trials: Caffeine
Fatigue, Tachycardia
Effect of Caffeine on Heart Function
The primary objective of this study is to assess the effect of an energy drink on ventricular repolarization as measured by the interval between the cardiac Q wave and the cardiac T wave (QT interval)obtained from the body…
- Trial name
- NCT02401776
- Testing
- Monster Energy Drink, Coffee
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Texas at Austin
Healthy, Caffeine
Effects of Caffeinated Beverages on Well-being
This study will evaluate post-beverage subjective caffeine responses and physiological responses to caffeinated beverages in generally healthy adults.
- Conditions
- Healthy, Caffeine, Beverage Intake
- Trial name
- NCT07357818
- Testing
- Participants' typical caffeinated beverage, Test caffeinated beverage
- Where
- United States
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- GUAYAKI SUSTAINABLE RAINFOREST PRODUCTS, INC.
Healthy
Gender Difference in Response to Caffeine in Children and Adolescents
Caffeine use is on the rise in America, and one of the most popular sources is soda. Among youth ages 8-16, caffeine consumption has increased by over 70% in the past 30 years.
- Trial name
- NCT02119416
- Testing
- Low Caffeine Administration first (1mg/kg body weight), High Caffeine Administration first (2mg/kg body weight)
- Where
- United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- State University of New York at Buffalo
Caffeine
Caffeine and Cerebrovascular Reactivity
Caffeine is the most commonly used stimulant drug with well documented effects on cerebral vascula-ture. Caffeine is known to non-specifically bind to adenosine receptors in the brain and to reduce resting blood flow while…
- Trial name
- NCT04730193
- Testing
- Caffeine
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Oklahoma
Alertness
Characterizing the Pharmacokinetic Profile of a Novel Encapsulated Caffeine Beverage and Associated Mood and Physiological Effects
This study is designed to compare self-reported mood states for encapsulated caffeine compared to dose-matched free caffeine, when consumed as a ready-to-drink beverage in healthy subjects.
- Trial name
- NCT05096780
- Testing
- Flavored caffeinated beverage
- Where
- United States
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
Nutritional Supplementation, Resistance Training
Caffeine and Sodium Bicarbonate Supplementation Effects on Resistance Training Performance
This research aims to explore the effects of two supplements, caffeine and sodium bicarbonate, on acute (short-term) resistance training performance.
- Trial name
- NCT06714331
- Testing
- Supplements
- Where
- Canada
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Memorial University of Newfoundland
Chronic Pain
AZD2066 Cocktail Study
The aims of this study are to examine the effect of repeated doses of AZD2066 and of caffeine, bupropion, tolbutamide, omeprazole, metoprolol and midazolam on the blood concentrations of each other
- Trial name
- NCT00930306
- Testing
- AZD2066, Caffeine, Tolbutamide
- Where
- 2 sites in United Kingdom
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- AstraZeneca
Autonomic Nervous System, Cardiorespiratory Parameters
Acute Caffeine Effects on Cardiac Autonomic and Cardiorespiratory Parameters Responses After Aerobic Exercise
Check the acute influence of caffeine on the autonomic modulation and cardiorespiratory parameters after aerobic exercise. Hypothesized that caffeine can promote a slower recovery of the cardiorespiratory parameters and the SNA…
- Trial name
- NCT02917889
- Testing
- Caffeine, Cardiopulmonary test, Treadmill aerobic exercise
- Where
- Brazil
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Universidade Estadual Paulista Júlio de Mesquita Filho
Overactive Bladder, Caffeine
"The Effects of Caffeine on Overactive Bladder Symptoms and Mental Health in Postmenopausal Women"
The purpose of this study is to observe effects of caffeine on overactive bladder symptoms and wellbeing. This study looks at whether caffeine has bad effects on urinary symptoms or if lower doses of caffeine decrease the…
- Conditions
- Overactive Bladder, Caffeine, Menopause
- Trial name
- NCT02180048
- Testing
- 400 mg of caffeine/day (Two 200mg pills/day)
- Where
- United States
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Loma Linda University
Healthy Adult Male
Effects of Caffeine on Agility in Amateur Soccer Players
This randomized, double-blind, placebo-controlled crossover clinical trial aims to investigate the acute effects of caffeine supplementation on motor and perceptual-cognitive components of agility performance in male amateur…
- Trial name
- NCT07844122
- Testing
- Caffeine 300 MG
- Where
- Slovakia
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Comenius University
Caffeine, Control
Caffeinated Chewing Gum & Wrestling Performance
The purpose of this study was to investigate the effect of caffeinated chewing gum on sympathetic nerve activity on wrestling simulation match.
- Trial name
- NCT06758336
- Testing
- caffeine
- Where
- Taiwan
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- National Taiwan Sport University
Sportive Performance, Caffeine
Effects of Caffeine on Upper Extremity Performance
It was aimed to apply caffeine supplement to elite basketball players and to investigate the effects of this supplement on upper extremity performance, lactic acid level and fatigue.
- Trial name
- NCT05916352
- Testing
- Caffeine Supplement
- Where
- Turkey (Türkiye)
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Cyprus International University
Healthy
Effects of Modafinil, Caffeine and Methylphenidate in Healthy Volunteers
In this study the investigators compare three stimulants to each other. The effects of these agents on cognitive performance (eg, attention and memory) and on the brain are being measured.
- Trial name
- MKM (NCT02071615)
- Testing
- Methylphenidate 20 mg tablet given once by mouth, modafinil 200mg tablet given once by mouth, caffein 200mg tablet given once by mouth
- Where
- Germany
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Charite University, Berlin, Germany
Healthy
Pre-workout Supplement Versus Caffeine on Energy Expenditure.
The primary purpose of this study was to examine the acute effects of a multi-ingredient pre-workout supplement versus an ergogenic dose of caffeine (6 mg/kg) on energy expenditure during low-intensity exercise.
- Trial name
- NCT04539054
- Testing
- ENGN Shred, Nutricost caffeine powder, Crystal Light
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Northern Illinois University
Polymorphism, Sleep Disorder
Polymorphisms, Caffeine and Sleep Disorders
Screening of a population of volunteer workers recruited on the occasion of their occupational health visit, within the Ministry of Defense and civil enterprises.
- Conditions
- Polymorphism, Sleep Disorder, Coffee-Workers' Disease
- Trial name
- SOCAF (NCT03855774)
- Testing
- Polymorphisms
- Where
- France
- Volunteers
- 1,100 people, healthy volunteers welcome
- Sponsor
- Institut de Recherche Biomedicale des Armees
Overweight
Effects of Caffeinated and Decaffeinated Coffee on Body Weight and Glucose Tolerance
Habitual consumption of coffee may have substantial beneficial effects on glucose metabolism according to recent findings of epidemiological studies in the U.S., Europe, and Japan.
- Trial name
- NCT00305097
- Testing
- Decaffeinated coffee, Caffeinated coffee, No coffee
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Cognitive Change, Sleep Deprivation
Sleep Deprivation Study
The purpose of this study is to evaluate the measures of brain function, both neurophysiological (event-related potentials (ERPs) and functional (cognitive assessments), in response to sleep deprivation.
- Conditions
- Cognitive Change, Sleep Deprivation, Caffeine
- Trial name
- NCT05560620
- Testing
- Sleep Deprivation, Caffeine, No Caffeine
- Where
- Canada
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- NeuroCatch Inc.
Healthy
Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function
It is often assumed that levels of caffeine found in 'decaffeinated' beverages are below any psychopharmacological threshold. However, recent findings indicate that caffeine doses as low as 9 mg may be psychoactive.
- Trial name
- NCT00487227
- Testing
- caffeine
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Fat Metabolism, Caffeine
Caffeine Strategies and Fat Oxidation
The goal of this clinical trial is to learn if different forms of caffeine ingestion can influence fat oxidation during submaximal cycling exercise.
- Conditions
- Fat Metabolism, Caffeine, Cycling, Exercise
- Trial name
- NCT07402902
- Testing
- Caffeine (Guinama Anhydrous Powder), Caffeine (Nescafé Classic Coffee), Caffeine (Kafewake Gum)
- Where
- Spain
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Universidad Rey Juan Carlos
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