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Beetroot Beverage and Repeated Sprint Power Output During RAST
Sponsor: Universidad Autonoma de Chihuahua
Summary
This randomized, double-blind, placebo-controlled crossover trial aims to evaluate the acute effects of a nitrate-rich beetroot-based beverage on repeated sprint performance in trained athletes. Ten athletes will complete two experimental conditions in randomized order: beetroot beverage (BET) and placebo (PLA), separated by a 7-day washout period. The beetroot beverage consists of 200 mL of a mixture containing beetroot, cocoa, and green tea, providing approximately 6.4 mmol of nitrate. In each condition, participants will perform a Running Anaerobic Sprint Test (RAST), consisting of six maximal 35-meter sprints with 10 seconds of passive recovery between sprints. The primary outcome is mean power output across the six sprints. Secondary outcomes include fatigue index, sprint-by-sprint power output, heart rate, rating of perceived exertion (Borg 6-20 scale), maximal oxygen uptake (VO₂max), and sleep quality assessed using the Insomnia Severity Index (ISI).
Official title: "Effects of a Beetroot-Based Functional Beverage on Repeated Sprint Performance: A Randomized, Double-Blind, Placebo-Controlled Crossover Trial"
Key Details
Gender
MALE
Age Range
18 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
10
Start Date
2026-03-12
Completion Date
2026-04-30
Last Updated
2026-03-16
Healthy Volunteers
Yes
Conditions
Interventions
Beetroot-based antioxidant beverage
Participants consumed 200 mL of a beetroot-based antioxidant beverage containing beetroot, cocoa, and green tea extract, providing approximately 6.4 mmol of dietary nitrate. The beverage was administered 2-3 hours before performing a Running Anaerobic Sprint Test (RAST). The formulation was designed to deliver nitrate and polyphenols with potential ergogenic and antioxidant effects. A 7-day washout period separated crossover conditions.