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

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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

Tracking Information
First Submitted Date  ICMJE June 26, 2017
First Posted Date  ICMJE June 29, 2017
Last Update Posted Date January 16, 2019
Actual Study Start Date  ICMJE June 26, 2017
Actual Primary Completion Date December 31, 2017   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: June 28, 2017)
change in upper limbs strength [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
Kimono Grip Strength Test
Original Primary Outcome Measures  ICMJE Same as current
Change History Complete list of historical versions of study NCT03203785 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE
 (submitted: June 28, 2017)
  • change in lower limbs power [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
    Horizontal Countermovement Jump
  • change in hand grip strength [ Time Frame: Pre-exercise; at 2 intervals during exercise; 24hour and 48hour after exercise ]
    Grip Strength Test
  • change in creatine kinase [ Time Frame: Pre-exercise; immediatly post-exercise; 24hour and 48hour after exercise ]
    3 ml of blood samples
  • 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
  • change in lactate [ Time Frame: At 2 intervals during exercise; immediatly post-exercise ]
    fingertip blood measured by Accutrend Plus.
  • change in lactate dehydrogenase [ Time Frame: Pre-exercise; immediatly post-exercise; 24hour and 48hour after exercise ]
    3 ml of blood samples
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Effect of Carbohydrate Consumption on Fatigue and Muscle Damage in Jiu-Jitsu Athletes
Official Title  ICMJE Effect of Carbohydrate Consumption on Fatigue and Muscle Damage in Jiu-Jitsu Athletes: A Randomized Clinical Trial
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.
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 Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Diagnostic
Condition  ICMJE
  • Fatigue
  • Exercise-induced Muscle Damage
Intervention  ICMJE
  • Dietary Supplement: Carbohydrate (maltodextrin)
    maltodextrin flavored
  • Other: Placebo
    non-caloric drink
Study Arms  ICMJE
  • 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.
    Intervention: Dietary Supplement: Carbohydrate (maltodextrin)
  • 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.
    Intervention: Other: Placebo
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: February 1, 2018)
14
Original Estimated Enrollment  ICMJE
 (submitted: June 28, 2017)
16
Actual Study Completion Date  ICMJE December 31, 2017
Actual Primary Completion Date December 31, 2017   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

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).
Sex/Gender  ICMJE
Sexes Eligible for Study: Male
Ages  ICMJE 18 Years to 33 Years   (Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Brazil
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT03203785
Other Study ID Numbers  ICMJE 1.873.861
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: Undecided
Responsible Party Cláudia Dornelles Schneider, Federal University of Health Science of Porto Alegre
Study Sponsor  ICMJE Federal University of Health Science of Porto Alegre
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: Claudia D Schneider, PhD Federal University of Health Science of Porto Alegre
PRS Account Federal University of Health Science of Porto Alegre
Verification Date January 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP