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Background: The relationship between training and competition is very important and aims at a more specific and adequate preparation in Jiu-Jitsu.  Problem and objective: To evaluate the relationship between training and competition through indications of injury and muscle strength.  Methods: The study sample included nine subjects (22.54 ± 2.77 years of age) who were submitted to the following two conditions: 1) training simulation and 2) competition simulation.  Results: There were no significant differences in the countermovement jump (CMJ) test. However, 48 hours after training there was an indication of values higher than the post-competition ones. Creatine kinase (CK) indicated significant differences in muscle damage after competition in relation to the other conditions and moments (p   0.55) and 48h (0.47) after the intervention. There was high correlation (&gt; 0.70) for all conditions in the squat jump (SJ). LDH showed a high correlation (&gt; 0.70) at 48 hours.  Conclusion: There was a good correlation between training and competition simulation, which tends to indicate that the training model used in the study properly prepare Jiu-Jitsu athletes for the demands of competition. Level of evidence I; High-quality randomized clinical trial with or without a statistically significant difference, but with narrow confidence intervals.

RELATIONSHIP BETWEEN COMPETITION SIMULATION AND TRAINING ON STRENGTH AND DAMAGE INDICATORS IN JIU-JITSU