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NCT04106752

Timing of Meal and Caffeine Intake on Substrate Use and Exercise Efficiency

Completed NA Last updated 27 September 2019
What this trial tests

NA trial testing Caffeine in Healthy in 8 participants. Completed in 29 July 2019.

Timeline
5 March 2018
Primary endpoint
30 June 2019
29 July 2019

Quick facts

Lead sponsorAmerican University of Beirut Medical Center
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designcrossover
Maskingsingle
Primary purposeother
Enrollment8
Start date5 March 2018
Primary completion30 June 2019
Estimated completion29 July 2019
Sites1 location across Lebanon

Drugs / interventions tested

Conditions studied

Sponsor

American University of Beirut Medical Center

Who can join

Adults 18 to 30, any sex, with Healthy. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

During the past decades, considerable emphasis has been directed to analyzing the potential role of caffeine on substrate use and exercise performance. Research shows that caffeine ingestion prior to exercise has beneficial effects on submaximal exercise capacity and time trial protocols. This effect is mediated by an increase in plasma free fatty acids and intramuscular triglyceride utilization, preserving muscle and liver glycogen. Generally, a dose between 4 - 9 mg/kg body mass is administered to athletes in order to observe a positive or ergogenic effect. Caffeine ingestion (6 mg/kg) improved exercise performance in a long duration protocol (2 hours + \~ 30 min time trial) regardless of the administration time (1 hour before or during exercise). Lower doses of caffeine (\~ 1.5 mg/kg), when added to a carbohydrate solution increased exercise performance in a similar fashion. In rats, caffeine has been shown to have a biphasic action on postprandial glucose metabolism. When ingested before a meal, hepatic glycogenesis is blunted. Its ingestion during and after a meal allows glycogenesis to occur. Manipulating meal and caffeine timing before low intensity exercise, comparable to every-day life activities, is of great interest in assessing substrate use and muscular efficiency. it would be also interesting to see how this meal or caffeine timing manipulation influence the energetics of different phenotypes.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other trials of Caffeine

Trials testing the same drug.

Other recruiting trials for Healthy

Currently open trials in the same condition.

Other American University of Beirut Medical Center trials

Trials by the same sponsor.

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Data sources for this page

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