The Influence of Red Bull Energy Drink on the Speed, Strength and Rebound Performance of Female Volleyball Players at the Performance Level

NCT07133061 | Completed

• 1 other identifier: USouthBohemiaKTVS
• Study Type: interventional
• Target: 15
• Locations: 1 country
• Sites: 1

Brief Summary

The first league female volleyball players of team VK Madeta České Budějovice were tested. Participants understood and agreed to the conditions of testing. The research group consisted of 15 female volleyball players aged 18-26 years,

Conditions

Effect of Supplementation on Performance

Keywords

Volleyball; Energy drink; Wingate test; Jumping ergometry; Dynamometer; Comparison of the result

Outcome Measures

Primary Outcomes (1)

• Red Bull's influence on performance

  The aim of this study was to determine the acute effects of Red Bull energy drink consumption on speed, strength, rebound performance, anaerobic capacity, fatigue, physiological responses, and selected motor abilities in female volleyball players. Specifically, we evaluated its impact on performance and fatigue index in the Wingate anaerobic test, post-exercise blood lactate concentration, perceived exertion using the Borg scale, lower limb power assessed by Bosco's test, and maximal handgrip strength measured by hand dynamometry.

  Day 1 and day 8 (after 1 week, at the same time - second test).

Study Arms (2)

With Red Bull

EXPERIMENTAL

The group of participants performed a test after using Red Bull

Diagnostic Test: Wingate test; Diagnostic Test: Dynamometry; Diagnostic Test: Rebound plate; Diagnostic Test: Blood lactate test

Without Red bull

ACTIVE COMPARATOR

The group of participants performed a test after using a placebo

Diagnostic Test: Wingate test; Diagnostic Test: Dynamometry; Diagnostic Test: Rebound plate; Diagnostic Test: Blood lactate test

Interventions

Wingate test DIAGNOSTIC_TEST

During the test, 1s power, 5s power, 30s power, speed, heart rate, the value of lactate and other parameters are determined.

With Red Bull; Without Red bull

Dynamometry DIAGNOSTIC_TEST

The test determines the strength of the handshake by right and left hand separately.

With Red Bull; Without Red bull

Rebound plate DIAGNOSTIC_TEST

The test determines the height of the jump from the right lower limb and from the left lower limb separately.

With Red Bull; Without Red bull

Blood lactate test DIAGNOSTIC_TEST

Measurement of volume of lactate in the blood.

With Red Bull; Without Red bull

Eligibility Criteria

• Age: 18 Years - 28 Years
• Gender Eligibility Details: This study is carried out on the female's volleyball team
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• age
• member of the team in the 1. league in volleyball
• female

You may not qualify if:

• acute illness

Sponsors & Collaborators

• University of South Bohemia: lead

Study Sites (1)

University of South Bohemia

České Budějovice, Česká Republika, 37005, Czechia

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: After enrollment in the study (in a pre-selected order of tests), participants were assigned a number under which they passed the tests.
• Purpose: PREVENTION
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Each participant underwent both tests, with Redbull and with placewbo, in random order.

Study Record Dates

• First Submitted: August 11, 2025
• First Posted: August 20, 2025
• Study Start: November 15, 2024
• Primary Completion: June 3, 2025
• Study Completion: July 3, 2025
• Last Updated: August 20, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF
• Time Frame: Once the article is published.
• Access Criteria: If the article is in Open access mode, it will be accessible to all.

Locations

CZ (1)