Effect of Beet Juice on Elite Swimmers.

NCT05470231 | Completed DMC

• 1 other identifier: 42/2021
• Study Type: interventional
• Target: 13
• Locations: 1 country
• Sites: 1

Brief 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. 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

Keywords

Swimming; Beetroot juice; Performance; Ergogenic aid

Outcome Measures

Primary Outcomes (6)

• 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.

  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.

  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

  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.

  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.

  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)

  3 hours after ingestion of the beetroot juice

Secondary Outcomes (3)

• Stroke rate

  from the day of randomization to the last day of the intervention: up to day 18

• Underwater distance

  from the day of randomization to the last day of the intervention: up to day 18

• Underwater time

  from the day of randomization to the last day of the intervention: up to day 18

Study Arms (2)

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.

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.

Dietary Supplement: Beetroot Juice

Interventions

Beetroot Juice DIETARY_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)

Beetroot juice; Placebo

Eligibility Criteria

• Age: 18 Years - 25 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

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

You may not qualify if:

• be on medication
• having had breakfast
• have brushed your teeth

Sponsors & Collaborators

• Universidad Francisco de Vitoria: lead
• Universidad Politecnica de Madrid: collaborator

Study Sites (1)

Universidad Francisco de Vitoria

Madrid, Pozuelo de Alarcón, 28223, Spain

Location

Related Publications (6)

• 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.

  PMID: 29540367 BACKGROUND

• 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.

  PMID: 29311764 BACKGROUND

• 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.

  PMID: 32102263 BACKGROUND

• 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.

  PMID: 35177993 BACKGROUND

• 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.

  PMID: 35055584 BACKGROUND

• 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.

  PMID: 32936597 BACKGROUND

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Masking Details: Triple blinded (Participant, Investigator and Outcomes Assessor) The participant was blinded not knowing the treatment to which he was submitted, investigator and outcome assessor responsible for collecting the results, without commenting on the group from which the subject came.
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD Sudent

Model Details: Parallel allocation was carried out in the two groups

Study Record Dates

• First Submitted: July 5, 2022
• First Posted: July 22, 2022
• Study Start: January 7, 2020
• Primary Completion: January 25, 2020
• Study Completion: January 25, 2020
• Last Updated: July 22, 2022

Record last verified: 2022-07

Locations

ES (1)