NCT07048912

The Effect of Acute Beetroot Juice Supplementation on Anaerobic Performance in Football Players

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 16 (actual)
• Sponsor: Melike Nur Eroğlu · Academic / Other
• Sex: Male
• Age: 18 Years – 19 Years
• Healthy volunteers: Accepted

Summary

The aim of this clinical trial is to examine the effects of two different natural fruit-vegetable blend beverages on short-duration, high-intensity exercise performance and muscle oxygenation in young male football players. The study also investigates how these beverages influence certain metabolic responses. The main questions it seeks to answer are: * Does one of the beverages improve peak and mean power output during the Wingate test? * How do these beverages affect muscle oxygenation and post-exercise recovery? * Researchers will compare the effects of the two beverages on performance and metabolic markers. Participants: * Consume one of the two natural beverages 2.5 hours before testing (assigned at random) * Perform a 30-second high-intensity Wingate cycling test * Undergo measurements of muscle oxygenation, heart rate, blood pressure, blood lactate, and blood glucose during and after exercise * Maintain consistent dietary and physical activity routines and avoid certain foods prior to testing

Conditions

• Exercise Performance
• Supplementation

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Beetroot Juice (BJ)	This intervention involves a single 140 mL dose of a commercially available concentrated beetroot juice supplement (Beet-It Pro Elite Shot, James White Drinks Ltd., UK), containing approximately 12.8 mmol (800 mg) of dietary nitrate. Participants consume the juice 2.5 hours prior to performing a 30-second Wingate anaerobic test. The purpose of this intervention is to examine its acute effects on anaerobic performance, muscle oxygenation, and metabolic responses.
DIETARY_SUPPLEMENT	Blackcurrant Juice (Placebo)	This intervention involves a single 140 mL dose of a low-calorie blackcurrant juice (Pfanner, Austria) with negligible nitrate content (\<0.1 mmol). The placebo is matched to beetroot juice in appearance, taste, and packaging to ensure double-blind conditions. It is consumed 2.5 hours before the Wingate test and serves as the control condition.

Timeline

• Start date: 2024-07-01
• Primary completion: 2024-07-21
• Completion: 2024-07-25
• First posted: 2025-07-03
• Last updated: 2025-07-03

Locations

1 site across 1 country: Turkey (Türkiye)