Working…
ClinicalTrials.gov
ClinicalTrials.gov Menu

Effect of Carbohydrate Consumption on Fatigue and Muscle Damage in Jiu-Jitsu Athletes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03203785
Recruitment Status : Completed
First Posted : June 29, 2017
Last Update Posted : January 16, 2019
Sponsor:
Information provided by (Responsible Party):
Cláudia Dornelles Schneider, Federal University of Health Science of Porto Alegre

Study Description
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information
Brief Summary:
The study is a randomized, double-blinded, placebo-controlled trial that will include the participation of 14 Jiu-Jitsu athletes between 18 and 33 years. The aim of the study is to evaluate the effects of carbohydrate consumption on fatigue and exercise-induced muscle damage in Jiu-Jitsu athletes.

Condition or disease Intervention/treatment Phase
Fatigue Exercise-induced Muscle Damage Dietary Supplement: Carbohydrate (maltodextrin) Other: Placebo Not Applicable

Detailed Description:
Brazilian Jiu-Jitsu (BJJ) is a sport characterized by intermittent high-intensity efforts separated by periods of low intensity. Muscular strength is considered one of the most important physical components to be developed, especially in the upper limbs through dynamic and static actions. The activities of high intensity (relation effort-pause) carried out by the upper and lower limbs during BJJ can induce muscle fatigue. In order to minimize the glycogen depletion and to guarantee the availability of energy substrate to the athlete during the physical exercise, the carbohydrate intake before moderate intensity exercises should be between 5-7 g / kg of weight / day. The intervention group will receive a 30g maltodextrin beverage and the placebo group a non-carbohydrate drink. There will be 3 combat simulations of 8 min each, with intervals of 10 min between fights. Athletes will be instructed to remain with their usual intake during the study. The outcomes will be: manual grip strength (dynamometer), upper limb strength (KGST), lower limb strength (vertical jump), subjective exertion perception (Borg scale), pain perception (Nilsson scale), blood markers of muscle damage (CK and LDH), lactate, and glycemia.

Study Design
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 14 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Diagnostic
Official Title: Effect of Carbohydrate Consumption on Fatigue and Muscle Damage in Jiu-Jitsu Athletes: A Randomized Clinical Trial
Actual Study Start Date : June 26, 2017
Actual Primary Completion Date : December 31, 2017
Actual Study Completion Date : December 31, 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Fatigue

Arms and Interventions
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Arm Intervention/treatment
Experimental: Carbohydrate
30g of carbohydrate (maltodextrin) diluted in 300ml of water. Athletes will drink 100ml before and 100ml in the first and second interval between exercise.
 Dietary Supplement: Carbohydrate (maltodextrin)
maltodextrin flavored
Placebo Comparator: Placebo
300 ml of a non-caloric drink. Athletes will drink 100ml before and 100ml in the first and second interval between exercise.
 Other: Placebo
non-caloric drink


Outcome Measures
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Primary Outcome Measures :
  1. change in upper limbs strength [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
    Kimono Grip Strength Test


Secondary Outcome Measures :
  1. change in lower limbs power [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
    Horizontal Countermovement Jump

  2. change in hand grip strength [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
    Grip Strength Test

  3. change in creatine kinase [ Time Frame: Pre-exercise; immediatly post-exercise; 24hour and 48hour after exercise ]
    3 ml of blood samples

  4. change in glucose [ Time Frame: Pre-exercise; at 2 intervals during exercise; immediatly post-exercise ]
    fingertip blood measured by Accutrend® Active glucose-specific reagent tape

  5. change in lactate [ Time Frame: At 2 intervals during exercise; immediatly post-exercise ]
    fingertip blood measured by Accutrend Plus.

  6. change in lactate dehydrogenase [ Time Frame: Pre-exercise; immediatly post-exercise; 24hour and 48hour after exercise ]
    3 ml of blood samples


Eligibility Criteria
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   18 Years to 33 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Compete in the categories of weight between 70kg and 88,3kg (weight classification from light to medium heavy, belonging to the bands purple to brown).
  • Age between 18 and 33 years.
  • Be training at least three times a week, minimum of 1,5 hours per day, for at least 3 consecutive months.
  • Have not used anabolic steroids in the last 6 months during the study period.
  • Do not use any type of dietary supplement in the last 3 months.
  • Self-declared healthy individuals.

Exclusion Criteria:

  • Recent muscle injury (within the last 3 months) that compromises and / or impedes the performance of the exercise requested in the study.
  • Be in a time of rapid weight loss (pre-competition).
Contacts and Locations
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03203785


Locations
Layout table for location information
Brazil
Gabriella B. Möller
Pôrto Alegre, Rio Grande Do Sul, Brazil, 90050170
Sponsors and Collaborators
Federal University of Health Science of Porto Alegre
Investigators
Layout table for investigator information
Principal Investigator: Claudia D Schneider, PhD Federal University of Health Science of Porto Alegre
More Information
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Layout table for additonal information
Responsible Party: Cláudia Dornelles Schneider, Professor, Federal University of Health Science of Porto Alegre
ClinicalTrials.gov Identifier: NCT03203785     History of Changes
Other Study ID Numbers: 1.873.861
First Posted: June 29, 2017    Key Record Dates
Last Update Posted: January 16, 2019
Last Verified: January 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
Layout table for MeSH terms
Fatigue
Signs and Symptoms