Abstract

We used measurements of metabolic perturbation obtained after sparring to estimate energetics contribution during no-gi Brazilian jiu-jitsu. Ten advanced grapplers performed two six-minute sparring bouts separated by 24 hours. Kinetics of recovery rate of oxygen uptake was modelled and post-combat-sparring blood-lactate concentration measured to estimate oxygen equivalents for phospholytic and glycolytic components of anaerobic energetics, respectively. Linear regression was used to estimate end-combat-sparring rate of oxygen uptake. Regional and whole-body composition were assessed using dual X-ray absorptiometry with associations between these measurements and energy turnover explored using Pearson’s correlation coefficient (significance, P < 0.05). Estimated oxygen equivalents for phospholytic and glycolytic contributions to anaerobic metabolism were 16.9 ± 8.4 (~28%) and 44.6 ± 13.5 (~72%) mL∙kg-1, respectively. Estimated end-exercise rate of oxygen uptake was 44.2 ± 7.0 mL∙kg-1∙min-1. Trunk lean mass was positively correlated with both total anaerobic and glycolytic-specific energetics (total, R = 0.645, p = 0.044; glycolytic, R = 0.692, p = 0.027) and negatively correlated with end-exercise rate of oxygen uptake (R = -0.650, p = 0.042). There were no correlations for any measurement of body composition and phospholytic-specific energetics. Six minutes of no-gi Brazilian jiu-jitsu sparring involves high relative contribution from the glycolytic component to total anaerobic energy provision and the link between this energetics profile and trunk lean mass is consistent with the predominance of ground-based combat that is unique for this combat sport. Training programs for Brazilian jiu-jitsu practitioners should be designed with consideration given to these specific energetics characteristics.

Highlights

  • MethodsTen healthy male Brazilian jiu jitsu (BJJ) athletes (age, 24.7 ± 6.0 years; range, 20–40 years; stature, 178.5 ± 7.0 cm; body mass, 74.8 ± 7.9 kg) with expertise in the no-gi fighting modality participated in this investigation

  • The popularity of the combat sport Brazilian jiu jitsu (BJJ) has increased in recent years [1, 2]

  • Eligibility was determined based on age ( 18 years), sex, graduation level, level of experience in competition/training ( 2 years in regional amateur competitions) and convenience insofar as the athlete’s availability to Energetics of Brazilian jiu jitsu combat sparring participate during the testing period

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Summary

Methods

Ten healthy male BJJ athletes (age, 24.7 ± 6.0 years; range, 20–40 years; stature, 178.5 ± 7.0 cm; body mass, 74.8 ± 7.9 kg) with expertise in the no-gi fighting modality participated in this investigation. Eligibility was determined based on age ( 18 years), sex (male), graduation level (purple, brown or black belt in BJJ), level of experience in competition/training ( 2 years in regional amateur competitions) and convenience insofar as the athlete’s availability to Energetics of Brazilian jiu jitsu combat sparring participate during the testing period. We restricted inclusion to athletes within a similar weight range (67–83 kg) so that athletes within proximity in this regard could be matched. The investigation’s methodology, which conformed to the ethical principles of the Declaration of Helsinki, was approved by the São Paulo State University Ethical Committee (process: 016375 FC/UNESP).

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