ergogéniquesNCT05470231

Effect of Beet Juice on Elite Swimmers.

A study testing Beetroot Juice in people with ergogéniques, run by Universidad Francisco de Vitoria at 1 site in Spain.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Trial summary

Objective: To investigate whether an acute intake of Beetroot Juice (BJ) improved performance factors in a repeated swimming effort at maximum speed in elite swimmers. Methods: A total of 13 elite swimmers (6 girls and 7 boys) participated in this randomised, double-blind study. Read more about this study

Who is it for?: Ages 18 to 25 years
Conditions the study is for: ergogéniques
What is being tested?: Beetroot Juice
Could I receive a placebo?: Yes, some participants may receive a placebo
How many people: 13 participants
Where: 1 siteSpain
Study dates: 7 Jan 2020to 25 Jan 2020
Phase: Interventional
Are there results?: None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 18 to 25 years
All sexes
No healthy volunteers
Adult

Who may be able to join

national and international level swimmers
healthy swimmers
no breakfast
48 hours with restricted diet of: other sports supplements and beetroot-rich foods

Who cannot join

be on medication
having had breakfast
have brushed your teeth

Trial locations and contacts

1 site in 1 country.

Spain1 site

Universidad Francisco de Vitoria
Madrid, Pozuelo de Alarcón, 28223

Other trials in Spain

About this study

Official title: Effects of Beetroot Juice Intake on Repeated Performance of Elite Swimmers. A Randomized Controlled Study

Objective: To investigate whether an acute intake of Beetroot Juice (BJ) improved performance factors in a repeated swimming effort at maximum speed in elite swimmers.

Methods: A total of 13 elite swimmers (6 girls and 7 boys) participated in this randomised, double-blind study. In 2 different trials, the swimmers ingested an injection of Beet-It (70 ml placebo (PL) or an injection of Beet-It 70 ml beetroot juice (BJ)) 3 hours before undergoing a 6x100m crawl intermittent maximal speed performance test.

Conditions: ergogéniques
Being tested: Beetroot Juice
Keywords: Swimming, Beetroot juice, Performance, Ergogenic aid

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Beetroot JuiceDietary supplement
The swimmers drank 3 hours before the test, mL70 of BJ (containing mmol6.4 of NO-3) (Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) or PLA (0.04 mmol of NO-3)

Study groups in NCT05470231
Study group	Role	What they receive
Beetroot juice	Active comparator	The swimmers ingested a shot of Beet-It 70 ml beetroot juice (BJ)) 3 hours before undergoing a 6x100m crawl intermittent maximal speed performance test. Receives: Dietary Supplement: Beetroot Juice
Placebo	Placebo comparator	The swimmers ingested a shot of Beet-It (70 ml placebo (PL)) 3 hours before undergoing a 6x100m crawl intermittent maximal speed performance test. Receives: Dietary Supplement: Beetroot Juice

What is being measured

The primary outcome is the main question the study is designed to answer.

Lactate concentration
After the swimmers exited the water, their finger was wiped dry and their blood lactate concentration was measured with a portable Lactate Pro2 analyzer 1 minute after completing each 100-meter set.
Measured: 3 hours post-dose of Beetroot juice or Placebo
Rate of Perceived Exertion
During the break between 100 and 100, they were asked how hard the effort had been using the subjective RPE scale as in other studies with BJ and swimming.
Measured: 3 hours after ingestion of the beetroot juice
Recovery Total Quality Scale
Just before these same swimmers performed the next 100, they were asked how recovered they felt, using another subjective TQR scale
Measured: 3 hours after ingestion of the beetroot juice
Total Time
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the total times, with the program KINOVEA 0.9.5.
Measured: 3 hours after ingestion of the beetroot juice
Parcial Time
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the split times, with the KINOVEA 0.9.5 program.
Measured: 3 hours after ingestion of the beetroot juice
Counter Movement Jump
Swimmers completed three repetitions of CMJ with hands on waist using an infrared jumping system (Optojump Next, Microgate, Bolzano, Italy)
Measured: 3 hours after ingestion of the beetroot juice

Secondary outcomes (3)

Stroke rate
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the stroke rate, with the KINOVEA 0.9.5 program.
Measured: from the day of randomization to the last day of the intervention: up to day 18
Underwater distance
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the distances of the underwater swim at the start and the second turn, with the program KINOVEA 0.9.5.
Measured: from the day of randomization to the last day of the intervention: up to day 18
Underwater time
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the underwater time, with the KINOVEA 0.9.5 program.
Measured: from the day of randomization to the last day of the intervention: up to day 18

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

7 Jan 202025 Jan 2020

First posted22 Jul 2022
Study start7 Jan 2020
Primary completion25 Jan 2020
Study completion25 Jan 2020

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Publications (6)Papers the sponsor has linked to this study.
Other trials for ergogéniquesStudies of the same condition, open and under way.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase N/A
Primary purpose: Treatment
Allocation: Randomised
Intervention model: Parallel groups
Model description: Parallel allocation was carried out in the two groups
Masking: Triple blind
Who is masked: Participant, Investigator, Outcomes assessor
Enrolment: 13 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT05470231
Sponsor's protocol ID: 42/2021
Status last verified: Jul 2022
First submitted: 5 Jul 2022
Last updated: 22 Jul 2022
Results posted: No
Data monitoring committee: Yes
FDA-regulated drug: No
FDA-regulated device: No

Publications

Maughan RJ, Burke LM, Dvorak J, Larson-Meyer DE, Peeling P, Phillips SM, Rawson ES, Walsh NP, Garthe I, Geyer H, Meeusen R, van Loon LJC, Shirreffs SM, Spriet LL, Stuart M, Vernec A, Currell K, Ali VM, Budgett RG, Ljungqvist A, Mountjoy M, Pitsiladis YP, Soligard T, Erdener U, Engebretsen L. IOC consensus statement: dietary supplements and the high-performance athlete. Br J Sports Med. 2018 Apr;52(7):439-455. doi: 10.1136/bjsports-2018-099027. Epub 2018 Mar 14.
PubMed 29540367
Dominguez R, Mate-Munoz JL, Cuenca E, Garcia-Fernandez P, Mata-Ordonez F, Lozano-Estevan MC, Veiga-Herreros P, da Silva SF, Garnacho-Castano MV. Effects of beetroot juice supplementation on intermittent high-intensity exercise efforts. J Int Soc Sports Nutr. 2018 Jan 5;15:2. doi: 10.1186/s12970-017-0204-9. eCollection 2018.
PubMed 29311764
Lopez-Samanes A, Perez-Lopez A, Moreno-Perez V, Nakamura FY, Acebes-Sanchez J, Quintana-Milla I, Sanchez-Oliver AJ, Moreno-Perez D, Fernandez-Elias VE, Dominguez R. Effects of Beetroot Juice Ingestion on Physical Performance in Highly Competitive Tennis Players. Nutrients. 2020 Feb 23;12(2):584. doi: 10.3390/nu12020584.
PubMed 32102263
Veiga S, Pla R, Qiu X, Boudet D, Guimard A. Effects of Extended Underwater Sections on the Physiological and Biomechanical Parameters of Competitive Swimmers. Front Physiol. 2022 Jan 26;13:815766. doi: 10.3389/fphys.2022.815766. eCollection 2022.
PubMed 35177993
Tan R, Cano L, Lago-Rodriguez A, Dominguez R. The Effects of Dietary Nitrate Supplementation on Explosive Exercise Performance: A Systematic Review. Int J Environ Res Public Health. 2022 Jan 11;19(2):762. doi: 10.3390/ijerph19020762.
PubMed 35055584
Senefeld JW, Wiggins CC, Regimbal RJ, Dominelli PB, Baker SE, Joyner MJ. Ergogenic Effect of Nitrate Supplementation: A Systematic Review and Meta-analysis. Med Sci Sports Exerc. 2020 Oct;52(10):2250-2261. doi: 10.1249/MSS.0000000000002363.
PubMed 32936597

Study at a glance

From the registry record, last updated by the sponsor on 22 Jul 2022. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: Effects of Beetroot Juice Intake on Repeated Performance of Elite Swimmers. A Randomized Controlled Study
ClinicalTrials.gov ID: NCT05470231
Acronym / sponsor ID: 42/2021
Conditions: ergogéniques
Keywords: Swimming, Beetroot juice, Performance, Ergogenic aid
Study type: Interventional
Recruitment status: Completed
Enrolment: 13 participants (actual)
Lead sponsor: Universidad Francisco de VitoriaUniversity, hospital or other
Collaborators: Universidad Politecnica de Madrid
Study start: 7 Jan 2020 (actual)
Primary completion: 25 Jan 2020 (actual)
Study completion: 25 Jan 2020 (actual)
First posted: 22 Jul 2022 (actual)
Results: Not posted in the source record

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Objective: To investigate whether an acute intake of Beetroot Juice (BJ) improved performance factors in a repeated swimming effort at maximum speed in elite swimmers.

Study design

Primary purpose: Treatment
Allocation: Randomised
Intervention model: Parallel groups
Masking: Triple blind (participant, investigator, outcomes assessor)
Number of arms: 2
Model description: Parallel allocation was carried out in the two groups

Arm	Type	Receives
Beetroot juice	Active comparator	Dietary Supplement: Beetroot JuiceThe swimmers ingested a shot of Beet-It 70 ml beetroot juice (BJ)) 3 hours before undergoing a 6x100m crawl intermittent maximal speed performance test.
Placebo	Placebo comparator	Dietary Supplement: Beetroot JuiceThe swimmers ingested a shot of Beet-It (70 ml placebo (PL)) 3 hours before undergoing a 6x100m crawl intermittent maximal speed performance test.

Who may qualify

Ages: 18 to 25 years
Sex: All
Healthy volunteers: Not accepted
Age groups: Adult

Key inclusion criteria (4 listed)

national and international level swimmers
healthy swimmers
no breakfast
48 hours with restricted diet of: other sports supplements and beetroot-rich foods

Key exclusion criteria (3 listed)

be on medication
having had breakfast
have brushed your teeth

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
Beetroot JuiceThe swimmers drank 3 hours before the test, mL70 of BJ (containing mmol6.4 of NO-3) (Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) or PLA (0.04 mmol of NO-3)	Dietary supplement	Beetroot juice, Placebo

Primary outcome

Lactate concentration
Time frame: 3 hours post-dose of Beetroot juice or Placebo
After the swimmers exited the water, their finger was wiped dry and their blood lactate concentration was measured with a portable Lactate Pro2 analyzer 1 minute after completing each 100-meter set.
Rate of Perceived Exertion
Time frame: 3 hours after ingestion of the beetroot juice
During the break between 100 and 100, they were asked how hard the effort had been using the subjective RPE scale as in other studies with BJ and swimming.
Recovery Total Quality Scale
Time frame: 3 hours after ingestion of the beetroot juice
Just before these same swimmers performed the next 100, they were asked how recovered they felt, using another subjective TQR scale
Total Time
Time frame: 3 hours after ingestion of the beetroot juice
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the total times, with the program KINOVEA 0.9.5.
Parcial Time
Time frame: 3 hours after ingestion of the beetroot juice
The complete 6x100 main test was recorded with a JVC model GY-HM150E video camera placed on the stand of the facility itself at about 10 m from the start/turn wall (approximately 5 m above and 10 m from the swim lane) to record the entire session. The recording of the session made it possible to calculate the split times, with the KINOVEA 0.9.5 program.
Counter Movement Jump
Time frame: 3 hours after ingestion of the beetroot juice
Swimmers completed three repetitions of CMJ with hands on waist using an infrared jumping system (Optojump Next, Microgate, Bolzano, Italy)

3 secondary outcomes

Stroke rate
Time frame: from the day of randomization to the last day of the intervention: up to day 18
Underwater distance
Time frame: from the day of randomization to the last day of the intervention: up to day 18
Underwater time
Time frame: from the day of randomization to the last day of the intervention: up to day 18

Results and safety

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 22 Jul 2022.
Background: PubMed 29540367Maughan RJ, Burke LM, Dvorak J, Larson-Meyer DE, Peeling P, Phillips SM, Rawson ES, Walsh NP, Garthe I, Geyer H, Meeusen R, van Loon LJC, Shirreffs SM, Spriet LL, Stuart M, Vernec A, Currell K, Ali VM, Budgett RG, Ljungqvist A, Mountjoy M, Pitsiladis YP, Soligard T, Erdener U, Engebretsen L. IOC consensus statement: dietary supplements and the high-performance athlete. Br J Sports Med. 2018 Apr;52(7):439-455. doi: 10.1136/bjsports-2018-099027. Epub 2018 Mar 14.
Background: PubMed 29311764Dominguez R, Mate-Munoz JL, Cuenca E, Garcia-Fernandez P, Mata-Ordonez F, Lozano-Estevan MC, Veiga-Herreros P, da Silva SF, Garnacho-Castano MV. Effects of beetroot juice supplementation on intermittent high-intensity exercise efforts. J Int Soc Sports Nutr. 2018 Jan 5;15:2. doi: 10.1186/s12970-017-0204-9. eCollection 2018.
Background: PubMed 32102263Lopez-Samanes A, Perez-Lopez A, Moreno-Perez V, Nakamura FY, Acebes-Sanchez J, Quintana-Milla I, Sanchez-Oliver AJ, Moreno-Perez D, Fernandez-Elias VE, Dominguez R. Effects of Beetroot Juice Ingestion on Physical Performance in Highly Competitive Tennis Players. Nutrients. 2020 Feb 23;12(2):584. doi: 10.3390/nu12020584.
Background: PubMed 35177993Veiga S, Pla R, Qiu X, Boudet D, Guimard A. Effects of Extended Underwater Sections on the Physiological and Biomechanical Parameters of Competitive Swimmers. Front Physiol. 2022 Jan 26;13:815766. doi: 10.3389/fphys.2022.815766. eCollection 2022.
Background: PubMed 35055584Tan R, Cano L, Lago-Rodriguez A, Dominguez R. The Effects of Dietary Nitrate Supplementation on Explosive Exercise Performance: A Systematic Review. Int J Environ Res Public Health. 2022 Jan 11;19(2):762. doi: 10.3390/ijerph19020762.
Background: PubMed 32936597Senefeld JW, Wiggins CC, Regimbal RJ, Dominelli PB, Baker SE, Joyner MJ. Ergogenic Effect of Nitrate Supplementation: A Systematic Review and Meta-analysis. Med Sci Sports Exerc. 2020 Oct;52(10):2250-2261. doi: 10.1249/MSS.0000000000002363.

Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

The record lists no contact. Use the official record to reach the sponsor.

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

A study testing Beetroot Juice in people with ergogéniques, run by Universidad Francisco de Vitoria at 1 site in Spain.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 22 Jul 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Lactate concentration (time frame: 3 hours post-dose of Beetroot juice or Placebo). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05470231, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Jul 2022.