Clinical trials: Caffeine
Sodium, Caffeine
Study on Sodium and Caffeine in Children and Adolescents
This study will compare different methods (24 hour urine collection, evening and morning spots, and questionnaires) to measure the consumption of sodium and cafeine in children and adolescents.
- Trial name
- NCT02900261
- Testing
- No intervention
- Where
- Switzerland
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- University of Lausanne Hospitals
Caffeine, Affect
Evaluating the Role of Expectations in Response to Caffeine Consumption: An RCT
The purpose of this project is to examine the effect of expectancy on mood and alertness after consumption of caffeine "treatment" or placebo "control" pill, given that participants know their probability for receiving the…
- Conditions
- Caffeine, Affect, Cognitive Ability, General, Mood
- Trial name
- NCT02461693
- Testing
- Caffeine
- Volunteers
- 205 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Caffeine
Effects of Caffeine on EEG Theta/Beta Ratio and Cognitive Control
Cognitive control driven by the prefrontal cortex (PFC) of the brain is thought to be important for goal-directed control over stimulus-driven processes.
- Trial name
- NCT02940808
- Testing
- Caffeine (200mg)
- Where
- Netherlands
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Leiden University Medical Center
Vertigo, Diseases, Vestibular
Effect of Caffeine Intake in Vestibular Function
Objective: Assess the effect of caffeine in the following vestibular function tests: Cervical Vestibular Evoked Potential (cVEMP), Ocular Vestibular Evoked Potential(oVEMP) and Caloric Test.
- Conditions
- Vertigo, Diseases, Vestibular, Caffeine
- Trial name
- NCT02825199
- Testing
- Caffeine, Non caffeine
- Where
- Brazil
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Instituto Brasiliense de Otorrinolaringologia
Caffeine, Spinal Cord Injury
Influence of Caffeine on HRV and Exercise Performance in Spinal Cord Injury
The aim is to investigate the influence of caffeine on heart rate variability and on performance in a 3 min exercise test in different population groups (able-bodied, paraplegic and tetraplegic subjects).
- Trial name
- NCT02083328
- Testing
- Caffeine
- Where
- Switzerland
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Swiss Paraplegic Research, Nottwil
At Home Setting, Coffee With or Without Caffeine
Do It Yourself (DIY) Coffee Study; Test Effect of Coffee on Cognition in an at Home Setting
Subjects will perform experiments in an at home-setting. The effect of caffeine in coffee will be tested in subjects with computer tests on attention and alertness.
- Trial name
- NCT02061982
- Testing
- Coffee consumption
- Where
- Netherlands
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- TNO
Pharmacokinetics of Repaglinide, Pharmacokinetics of Caffeine
A Study to Evaluate the Effect of Multiple Doses of Isavuconazole on the Pharmacokinetics of Repaglinide and Caffeine
The purpose of this study is to assess the effect of multiple doses of isavuconazole on the pharmacokinetics of Repaglinide and possible metabolites after single dose administration.
- Conditions
- Pharmacokinetics of Repaglinide, Pharmacokinetics of Caffeine, Healthy Subjects
- Trial name
- NCT02128321
- Testing
- Isavuconazole, Repaglinide, Caffeine
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Astellas Pharma Global Development, Inc.
Focus: to Compare a Commercially Available Energy Drink, B Vitamins, Caffeine Alone, and Placebo for Effectiveness on Perceived Energy Level and Wakefulness
Efficacy of Energy Shots and Caffeine for Energy and Wakefulness Levels
The line of "5-hour Energy"® products are available over-the-counter as energy supplements. The appeal of these products involves ease of use, low caloric value, and the absence of sugar to prevent a "crash" later in the day.
- Trial name
- NCT01755299
- Testing
- Regular "5-hour Energy", Decaf "5-hour Energy", Compounded concentrated caffeine liquid
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- ProMedica Health System
Cognitive Function, Mood
Cognitive and Cerebral Blood Flow Effects of 2-week Caffeine Abstinence or Maintenance
The purpose of this study is to determine the effects of 2 weeks caffeine abstinence as compared to 2 weeks caffeine maintenance (300mg per day)on cognition and mood.
- Conditions
- Cognitive Function, Mood, Cerebral Haemodynamics, Caffeine Withdrawal
- Trial name
- NCT01376882
- Testing
- Caffeine
- Where
- United Kingdom
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Self-identified Problematic Caffeine Use, DSM-IV Substance Dependence as Applied to Caffeine
Assessment and Treatment of Caffeine Dependence
Recent research has established that some individuals report that they are unable to cease caffeine use, despite feeling that caffeine is posing a health risk or causing significant impairment in their daily activities.
- Trial name
- NCT00338195
- Testing
- Individualized caffeine cessation instructions
- Where
- United States
- Volunteers
- 94 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Intraocular Pressure, Caffeine Dosage
The Effect of Dosage of Caffeine on Intraocular Pressure
The goal of the study is to determine the effect of different doses of caffeine on intraocular pressure. We hypothesized that higher dosage of caffeine would increase intraocular pressure more than lower doses.
- Trial name
- NCT01793311
- Testing
- decaffeinated coffee, regular dose coffee, high dose coffee
- Where
- Thailand
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Chiang Mai University
Caffeine
Effects of Caffeine in Hydration and Energy Metabolism
The main purposes of this randomized cross-over trial are to characterize and compare the effects of a moderate dose of caffeine intake in healthy physically active males on hydration and energy metabolism specifically: 1.
- Trial name
- NCT01477294
- Testing
- Caffeine
- Where
- Portugal
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Technical University of Lisbon
Caffeine
Genetic Determinants of Cardiovascular Response to Coffee Drinking
Cardiovascular and neuropsychologic effects of coffee are still debated. The precise mechanism underlying the actions of caffeine on the cardiovascular and neuropsychologic systems is incompletely understood and a considerable…
- Trial name
- NCT01330680
- Testing
- Coffee, Decaffeinated coffee
- Where
- Italy
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- G. d'Annunzio University
Caffeine, Ischemic Preconditioning
The Effect of Caffeine on Ischemic Preconditioning
Ischaemic preconditioning (IP) describes the phenomenon that brief periods of ischaemia render the (myocardial) muscle more resistant to a subsequent more prolonged period of ischaemia and reperfusion.
- Conditions
- Caffeine, Ischemic Preconditioning, Ischemia-Reperfusion Injury
- Trial name
- NCT00184912
- Testing
- caffeine, Technetium-TC99m-labeled Annexin A5, ten minutes forearm ischemia
- Where
- Netherlands
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Radboud University Medical Center