Clinical trial NCT05470231: Effect of Beet Juice on Elite Swimmers.
Official title: Effects of Beetroot Juice Intake on Repeated Performance of Elite Swimmers. A Randomized Controlled Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: ergogéniques
Keywords: Swimming
Beetroot juice
Performance
Ergogenic aid
Lead sponsor: Universidad Francisco de Vitoria
Sponsor class: OTHER
Collaborators: name: Universidad Politecnica de Madrid
First posted: 2022-07-22
Enrollment: 13
Sex: ALL
Minimum age (years): 18
Maximum age (years): 25
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Parallel allocation was carried out in the two groups
Primary purpose: TREATMENT

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.


Eligibility criteria: Inclusion Criteria:

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

Exclusion Criteria:

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

Primary outcomes:
measure: Lactate concentration
timeFrame: 3 hours post-dose of Beetroot juice or Placebo
measure: Rate of Perceived Exertion
timeFrame: 3 hours after ingestion of the beetroot juice
measure: Recovery Total Quality Scale
timeFrame: 3 hours after ingestion of the beetroot juice
measure: Total Time
timeFrame: 3 hours after ingestion of the beetroot juice
measure: Parcial Time
timeFrame: 3 hours after ingestion of the beetroot juice
measure: Counter Movement Jump
timeFrame: 3 hours after ingestion of the beetroot juice
Secondary outcomes:
measure: Stroke rate
timeFrame: from the day of randomization to the last day of the intervention: up to day 18
measure: Underwater distance
timeFrame: from the day of randomization to the last day of the intervention: up to day 18
measure: Underwater time
timeFrame: from the day of randomization to the last day of the intervention: up to day 18
Other outcomes:
Locations:
city: Madrid
country: Spain
facility: Universidad Francisco de Vitoria
state: Pozuelo De Alarcón
Study officials:
References:
citation: 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.
citation: 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.
citation: 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.
citation: 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.
citation: 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.
citation: 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.