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Effects of Beetroot Juice and Caffeinated Coffee on Exercise Performance in Recreationally Active Men
Sponsor: Acibadem University
Summary
The goal of this clinical trial was to evaluate how acute intake of beetroot juice, caffeinated coffee, and their combination affected aerobic and anaerobic exercise performance in healthy recreationally active men. The main questions were: Did beetroot juice, caffeinated coffee, or their combination improve aerobic exercise performance? Did beetroot juice, caffeinated coffee, or their combination improve countermovement jump performance? Researchers compared four conditions: control, caffeinated coffee, beetroot juice, and beetroot juice combined with caffeinated coffee. Each participant completed all four conditions in a randomized crossover design, with a 1-week washout period between sessions. Participants: Completed a familiarization session before the experimental sessions Consumed water only, caffeinated Turkish coffee, beetroot juice, or both beetroot juice and caffeinated coffee depending on the assigned condition Performed a countermovement jump test Performed a 20-m multistage shuttle run test Had heart rate and rating of perceived exertion assessed during exercise testing
Official title: Evaluation of the Effects of Acute Beetroot Juice and Caffeinated Coffee Intake on Aerobic and Anaerobic Performance in Recreational Athletes
Key Details
Gender
MALE
Age Range
18 Years - 45 Years
Study Type
INTERVENTIONAL
Enrollment
16
Start Date
2024-12-05
Completion Date
2024-12-26
Last Updated
2026-09-01
Healthy Volunteers
Yes
Conditions
Interventions
Beetroot juice
Participants consumed 70 mL of concentrated beetroot juice providing 6.5 mmol of nitrate according to the manufacturer's specification. The beetroot juice was consumed approximately 2.5 hours before exercise testing.
Caffeinated Turkish Coffee
Turkish coffee was individually prepared to provide an estimated caffeine dose of 4 mg/kg body mass. The caffeine dose was calculated using an estimated caffeine content of 17 mg/g of coffee. Approximately 14-20 g of coffee was prepared with 100 mL of water and consumed approximately 60 minutes before exercise testing.
Water
During the control condition, participants received no experimental supplement and consumed water only before completing the standardized exercise testing protocol.
Locations (1)
Acibadem Sports Athlete Health Center
Istanbul, Istanbul, Turkey (Türkiye)