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Caffeine Supplementation and Strength Endurance in Brazilian Jiu-jitsu Athletes
Sponsor: Federal University of Minas Gerais
Summary
This study investigated the acute effects of ingesting 400 mg of caffeine administered 30 minutes before Brazilian jiu-jitsu-specific strength endurance tests. Experienced athletes completed two conditions, placebo and caffeine, in a randomized, double-blind, crossover clinical trial. Performance was assessed using the dynamic component of the kimono grip strength test (maximum number of repetitions, MNR) and the isometric component (maximum static lift, MSL), both performed with a gi grip. Rating of perceived exertion, adverse effects, and blinding effectiveness were also evaluated.
Key Details
Gender
MALE
Age Range
18 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
15
Start Date
2025-12-12
Completion Date
2026-02-15
Last Updated
2026-09-04
Healthy Volunteers
Yes
Interventions
Caffeine
Capsule containing 400 mg of anhydrous caffeine ingested 30 minutes before performance testing.
Placebo
Capsule containing 400 mg of cornstarch used as placebo, ingested 30 minutes before performance testing.
Locations (1)
Universidade Federal de Minas Gerais (UFMG), Laboratory of Nutrition and Exercise Training (LAN-UFMG), Belo Horizonte, MG, Brazil
Belo Horizonte, Minas Gerais, Brazil