Beetroot Beverage and Repeated Sprint Power Output During RAST

NCT07473193 | Not Yet Recruiting DMC

• 1 other identifier: Cl-062-23
• Study Type: interventional
• Target: 10
• Locations: 0 countries
• Sites: N/A

Brief 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).

Conditions

Repeated Sprint Performance in Trained Athletes; Exercise Performance; Nitrate Supplementation

Keywords

Beetroot juice

Outcome Measures

Primary Outcomes (1)

• Mean power output (W) during six maximal 35-m sprints

  Mean power output will be calculated from six maximal 35-m sprint efforts separated by standardized recovery intervals. Sprint time will be recorded and converted to power output (W). The mean value across all six sprints will be used as the outcome measure.

  Baseline and immediately post-intervention.

Study Arms (2)

Beetroot Beverage (BET)

EXPERIMENTAL

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 ingested 2-3 hours before performing the exercise test.

Dietary Supplement: Beetroot-based antioxidant beverage

Placebo Beverage (PLA)

PLACEBO COMPARATOR

Participants consumed 200 mL of a placebo beverage matched for color, taste, and texture but without nitrate or active antioxidant compounds. The beverage was ingested 2-3 hours before performing the exercise test.

Dietary Supplement: Beetroot-based antioxidant beverage

Interventions

Beetroot-based antioxidant beverage DIETARY_SUPPLEMENT

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.

Beetroot Beverage (BET); Placebo Beverage (PLA)

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Healthy trained athletes
• Age between 18-35 years
• Regular training ≥3 times/week
• No cardiovascular or metabolic disease

You may not qualify if:

• Age between 18-35 years
• Regular training ≥3 times/week
• No cardiovascular or metabolic disease

Sponsors & Collaborators

• Universidad Autonoma de Chihuahua: lead

Related Publications (1)

• Ponce Dávila, E. O., Neder Suárez, D., Muñoz Daw, M. de J., Carrasco Legleu, C. E., & Benítez Hernández, Z. P. (2024). Diseño y análisis de una bebida deportiva a base de betabel. Revista Mexicana De Ciencias De La Cultura Física, 3(7), 1-10. https://doi.org/10.54167/rmccf.v3i7.1370

  RESULT

Central Study Contacts

Emmanuel Omar Ponce Dávila, MC

CONTACT

+526142715782; a327789@uach.mx

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Masking Details: The study was conducted under a double-blind design. Both participants and investigators were unaware of the beverage allocation (beetroot-based beverage or placebo). The beverages were matched in volume (200 mL), color, taste, and texture. Allocation was performed by an independent researcher not involved in data collection or analysis. Outcome assessors and data analysts were blinded to treatment order until completion of statistical analyses.
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Model Details: Randomized, double-blind, placebo-controlled crossover design. Participants completed two experimental trials (beetroot-based beverage and placebo) separated by a 7-day washout period. The order of interventions was randomized. Each participant served as his own control. Performance outcomes were assessed using the Running Anaerobic Sprint Test (RAST).

Study Record Dates

• First Submitted: February 15, 2026
• First Posted: March 16, 2026
• Study Start: March 12, 2026
• Primary Completion: April 12, 2026
• Study Completion: April 30, 2026
• Last Updated: March 16, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share