Effect of Grape Juice Consumption on the Parameters of Oxidative Stress and Muscle Fatigue in Judo Athletes

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-05-11

Study Completion Date

2017-08-17

Brief Summary

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This project aims to evaluate if after 14 days of grape juice ingestion there is improvement of the parameters of strength, fatigue and oxidative stress in judo fighters. The study will be a randomized, blind, crossover clinical trial of 20 Judo athletes. Judo wrestling simulations will be performed on 3 different days.

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Detailed Description

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Grape juice has a high concentration of phenolic compounds and is capable of modulating biochemical parameters and oxidative stress. By naturally containing carbohydrates grape juice can help acutely minimize fatigue during exercise as well as long-term oxidative stress parameters in athletes. This project aims to evaluate if after 14 days of grape juice ingestion there is improvement of the parameters of strength, fatigue and oxidative stress in judo fighters. The study will be a randomized, blind, crossover clinical trial of 20 Judo athletes. Judo wrestling simulations will be performed on 3 different days. Each exercise session will consist of four 7-minute bouts, with 14-minute rest between them. The athletes will perform a first fight simulation without ingestion of any beverage (control group 1), and then will be randomized to determine the order of participation in the groups: maltodextrin (group 2 placebo) and grape juice (intervention group 3). Analyzes of oxidative stress; Muscle strength and fatigue; Perceived effort rate; Lactate; Heart rate; Analysis of food consumption and body composition.Two-way ANOVA will be used to evaluate the relation of the intervention and physical exercise, besides parameters of strength and fatigue. The level of significance adopted will be 5% and for the analysis, the SPSS summer 23 statistical program will be used.

Conditions

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Oxidative Stress Muscle Fatigue Polyphenol Free Radical Oxidation of Tissue

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Randomized clinical trial

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Investigators

Double blind study

Study Groups

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Control Group

The athletes will not receive any drink and will do the simulations of the fight.

Group Type NO_INTERVENTION

No interventions assigned to this group

Intervention group

(Intervention, grape juice) - athletes will receive 400 ml per day of grape juice (containing 66g of carbohydrates) for 14 days and will do the fight simulations.

Group Type ACTIVE_COMPARATOR

Grape juice

Intervention Type DIETARY_SUPPLEMENT

400ml diary of grape juice

Placebo Group

(Placebo, grape-flavored maltodextrin carbohydrate) - athletes will receive400ml of drink daily with 66g of maltodextrin for 14 days and will do the fight simulations; The amount of maltodextrin is equal to the amount of carbohydrate present in grape juice.

Group Type PLACEBO_COMPARATOR

Maltodextrin

Intervention Type DIETARY_SUPPLEMENT

400ml diary of maltodextrin

Interventions

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Grape juice

400ml diary of grape juice

Intervention Type DIETARY_SUPPLEMENT

Maltodextrin

400ml diary of maltodextrin

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Judo athletes, federated, who hold state, federal and international competitions of both sexes, aged between 15 and 24 years and any weight category of the sport, except free weight.

Exclusion Criteria

* Recent injury (last 3 months) that prevents training or competition;
* Food restriction on grape juice;
* Being in the phase of fast weight loss in pre competition..

Minimum Eligible Age

15 Years

Maximum Eligible Age

24 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes