Effect of Beet Juice on Elite Swimmers.

Sponsor

Universidad Francisco de Vitoria (Other)

Overall Status

Completed

CT.gov ID

NCT05470231

Collaborator

Universidad Politecnica de Madrid (Other)

Enrollment

Location

Arms

Actual Duration (Days)

Patients Per Site Per Month

Study Details

Study Description

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.

Condition or Disease	Intervention/Treatment	Phase
ergogéniques	Dietary Supplement: Beetroot Juice	N/A

Study Design

Study Type:

Interventional

Actual Enrollment :

13 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Intervention Model Description:

Parallel allocation was carried out in the two groupsParallel allocation was carried out in the two groups

Masking:

Triple (Participant, Investigator, Outcomes Assessor)

Masking Description:

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.

Primary Purpose:

Treatment

Official Title:

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

Actual Study Start Date :

Jan 7, 2020

Actual Primary Completion Date :

Jan 25, 2020

Actual Study Completion Date :

Jan 25, 2020

Arms and Interventions

Arm	Intervention/Treatment
Active Comparator: Beetroot juice 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 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)
Placebo Comparator: Placebo 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 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)

Arm

Intervention/Treatment

Active Comparator: Beetroot juice

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

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)

Placebo Comparator: Placebo

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

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)

Outcome Measures

Primary Outcome Measures

Lactate concentration [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 [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 [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 [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 [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 [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)

Secondary Outcome Measures

Stroke rate [from the day of randomization to the last day of the intervention: up to day 18]
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.
Underwater distance [from the day of randomization to the last day of the intervention: up to day 18]
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.
Underwater time [from the day of randomization to the last day of the intervention: up to day 18]
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.

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 25 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

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

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Universidad Francisco de Vitoria	Madrid	Pozuelo De Alarcón	Spain	28223

Sponsors and Collaborators

Universidad Francisco de Vitoria
Universidad Politecnica de Madrid

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

Responsible Party:

Berta Moreno Heredero, PhD Sudent, Universidad Francisco de Vitoria

ClinicalTrials.gov Identifier:

NCT05470231

Other Study ID Numbers:

42/2021

First Posted:

Jul 22, 2022

Last Update Posted:

Jul 22, 2022

Last Verified:

Jul 1, 2022

Studies a U.S. FDA-regulated Drug Product:

Studies a U.S. FDA-regulated Device Product:

Keywords provided by Berta Moreno Heredero, PhD Sudent, Universidad Francisco de Vitoria

Study Results

No Results Posted as of Jul 22, 2022