Brazilian Jiu-Jitsu Simulated Competition Part I: Metabolic, Hormonal, Cellular Damage, and Heart Rate Responses

ABSTRACTAndreato, LV, Julio, UF, Panissa, VLG, Esteves, JVDC, Hardt, F, de Moraes, SMF, de Souza, CO, and Franchini, E. Brazilian jiu-jitsu simulated competition part IMetabolic, hormonal, cellular damage, and heart rate responses. J Strength Cond Res 29(9)2538–2549, 2015—The aim of this study was t...

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Published in:Journal of strength and conditioning research 2015-09, Vol.29 (9), p.2538-2549
Main Authors: Andreato, Leonardo V, Julio, Ursula F, Panissa, Valeria L.G, Esteves, João V.D.C, Hardt, Felipe, de Moraes, Solange M.F, de Souza, Camila O, Franchini, Emerson
Format: Article
Language:English
Subjects:
Adolescent
Adult
Alanine Transaminase - blood
Aspartate Aminotransferases - blood
Athletes
Biomarkers - blood
Brazil
Competitive Behavior - physiology
Creatine Kinase - blood
Energy
Heart rate
Heart Rate - physiology
Humans
Hydrocortisone - blood
Lactic Acid - blood
Male
Martial arts
Martial Arts - physiology
Metabolism
Testosterone - blood
Young Adult
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Summary:ABSTRACTAndreato, LV, Julio, UF, Panissa, VLG, Esteves, JVDC, Hardt, F, de Moraes, SMF, de Souza, CO, and Franchini, E. Brazilian jiu-jitsu simulated competition part IMetabolic, hormonal, cellular damage, and heart rate responses. J Strength Cond Res 29(9)2538–2549, 2015—The aim of this study was to analyze physiological responses in Brazilian jiu-jitsu athletes during simulated competition. To this end, 10 athletes (age28 ± 4 years, body mass81.8 ± 7.4 kg, body fat13.0 ± 4.8%, systematic practice11 ± 4 years) were analyzed in simulated competition (4 matches of 10 minutes). Blood samples were taken to assess energy demand, hormonal responses, and cell damage. Additionally, the heart rate variability (HRV) response was analyzed. The main results show that in simulated competition, during the last matches, athletes had lower lactate (p < 0.001), epinephrine (p < 0.001), norepinephrine (p < 0.001), and insulin (p = 0.002) concentrations. Increases observed in creatine kinase (p < 0.001), aspartate aminotransferase (p < 0.001), alanine aminotransferase (p = 0.007), and creatinine (p < 0.001) seen, especially, in the last matches are indicative of possible cell damage. The HRV reflected a decrease in the RR medium (average of the normal R-R intervals) (p = 0.001) during the competition. Thus, it is concluded that successive matches from competition generate a gradual decrease of adrenergic and glycolytic activities, which is accompanied by a gradual increase in cell damage markers and decrease in the RR medium of the HRV.
ISSN:1064-8011
1533-4287
DOI:10.1519/JSC.0000000000000918