Clinical trial NCT05657093: Effect of the Beetroot Juice in Portuguese Swimmers
Official title: "Effects of Beetroot Juice os Sport Performane in Elite Swimmers. A Randomized Clinical Trial"
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Ergogenics
Keywords: swimming
beet
swim
nitrate
intermittent sports
ergogenic aids
Lead sponsor: Universidad Francisco de Vitoria
Sponsor class: OTHER
Collaborators: name: Universidad Politecnica de Madrid
name: Instituto Politécnico de Bragança
First posted: 2022-12-20
Enrollment: 18
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 beet juice (BJ) improved the factors of total and split times (performance), stroke frequency and CMJ (biomechanics), lactate and HR (physiology) and RPE-TQR (psychophysiological) in a repeated (performance), stroke frequency and CMJ (biomechanics), lactate and HR (physiology) and RPE-TQR (psychophysiological) in a repeated maximal speed swimming effort in elite swimmers.

Methods: A total of 18 elite swimmers participated in this randomized, double-blind study. In 2 different trials, swimmers ingested a Beet-It injection (70 ml placebo (PL) or a Beet-It injection of 70 ml beet juice (BJ)) 3 hours before undergoing a 2x6x100 m intermittent maximal speed crawl performance test.


Eligibility criteria: Inclusion Criteria:

1. - national and international level swimmers
2. - healthy swimmers
3. - no breakfast
4. - 48 hours with restricted diet of: other sports supplements and beetroot-rich foods

Exclusion Criteria:

1. -be on medication
2. - having had breakfast
3. - 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 7
Other outcomes:
Locations:
city: Madrid
country: Spain
facility: Universidad Francisco de Vitoria
state: Pozuelo De Alarcón
Study officials:
References:
citation: Moreno B, Veiga S, Sanchez-Oliver AJ, Dominguez R, Morencos E. Analysis of Sport Supplement Consumption by Competitive Swimmers According to Sex and Competitive Level. Nutrients. 2022 Aug 6;14(15):3218. doi: 10.3390/nu14153218.
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.
citation: Zamani H, de Joode MEJR, Hossein IJ, Henckens NFT, Guggeis MA, Berends JE, de Kok TMCM, van Breda SGJ. The benefits and risks of beetroot juice consumption: a systematic review. Crit Rev Food Sci Nutr. 2021;61(5):788-804. doi: 10.1080/10408398.2020.1746629. Epub 2020 Apr 15.
citation: Berjisian E, McGawley K, Saunders B, Dominguez R, Koozehchian MS, de Oliveira CVC, Rafiei R, Miraftabi H, Sarshin A, Naderi A. Acute effects of beetroot juice and caffeine co-ingestion during a team-sport-specific intermittent exercise test in semi-professional soccer players: a randomized, double-blind, placebo-controlled study. BMC Sports Sci Med Rehabil. 2022 Mar 29;14(1):52. doi: 10.1186/s13102-022-00441-1.
citation: Jonvik KL, Hoogervorst D, Peelen HB, de Niet M, Verdijk LB, van Loon LJC, van Dijk JW. The impact of beetroot juice supplementation on muscular endurance, maximal strength and countermovement jump performance. Eur J Sport Sci. 2021 Jun;21(6):871-878. doi: 10.1080/17461391.2020.1788649. Epub 2020 Jul 21.
citation: Morais JE, Silva AJ, Garrido ND, Marinho DA, Barbosa TM. The transfer of strength and power into the stroke biomechanics of young swimmers over a 34-week period. Eur J Sport Sci. 2018 Jul;18(6):787-795. doi: 10.1080/17461391.2018.1453869. Epub 2018 Mar 24.
citation: Esen O, Dominguez R, Karayigit R. Acute Beetroot Juice Supplementation Enhances Intermittent Running Performance but Does Not Reduce Oxygen Cost of Exercise among Recreational Adults. Nutrients. 2022 Jul 11;14(14):2839. doi: 10.3390/nu14142839.