NCT03203785

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

Effect of Carbohydrate Consumption on Fatigue and Muscle Damage in Jiu-Jitsu Athletes: A Randomized Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 14 (actual)
• Sponsor: Federal University of Health Science of Porto Alegre · Academic / Other
• Sex: Male
• Age: 18 Years – 33 Years
• Healthy volunteers: Accepted

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.

Conditions

• Fatigue
• Exercise-induced Muscle Damage

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Carbohydrate (maltodextrin)	maltodextrin flavored
OTHER	Placebo	non-caloric drink

Timeline

• Start date: 2017-06-26
• Primary completion: 2017-12-31
• Completion: 2017-12-31
• First posted: 2017-06-29
• Last updated: 2019-01-16

Locations

1 site across 1 country: Brazil