The Effect of Pre-Exercise Caffeine and Glucose Ingestion on Endurance Capacity in Hypoxia: A Double-Blind Crossover Trial.
Study Goal
The researchers aimed to determine the effect of pre-exercise caffeine and carbohydrate supplementation on endurance performance in a hypoxic environment.
Results Summary
The study examined endurance performance under hypoxia but did not conclusively demonstrate caffeine's impact, as results remained inconclusive regarding performance enhancement.
Population
Eight healthy, active young males.
Effective Dosage
Not specified in the abstract.
Duration
Single-dose intervention (60 minutes before exercise).
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
pre-exercise carbohydrate and caffeine supplementation | neutral | endurance exercise performance | Eight healthy active young males | - | examined the effect | #1 |
The impact of caffeine and glucose supplementation in a hypoxic environment on endurance exercise performance remains inconclusive. The current study examined the effect of pre-exercise carbohydrate and caffeine supplementation on endurance exercise performance in an acute hypoxic environment. Eight healthy active young males participated in this double-blind, within-subjects crossover study. Participants ingested the test drink 60 min before exercising at 50% Wmax for 90 min on a cycle ergometer (fatiguing preload); there followed an endurance performance test at 85% Wmax until exhaustion in a hypoxic chamber (~15%O