Effects of Successive Judo Matches on Fatigue and Muscle Damage Markers

Abstract

This study aimed to investigate the acute effects of simulated judo matches on fatigue and muscle damage markers. Twenty male judo athletes participated in this study. The athletes performed three 5-minute judo matches separated by 15 minutes of passive rest between each match. The following measurements were performed before and after each match: shoulder external/internal rotation isokinetic torque and countermovement jump (CMJ). Blood samples were taken before the first match and after the third match for serum creatine kinase (CK) and lactate dehydrogenase (LDH) analysis. T-tests for dependent samples and analysis of variance for repeated measures were used to compare the variables over the time; the level of significance was set at 0.05. An overall effect of the successive matches on shoulder internal (PTIN) and external (PTEX) rotation peak torque and CMJ performance was observed. PTIN and PTEX showed significant decreases in postmatch 2 and postmatch 3 when compared with the baseline (p < 0.01). Also, CMJ height declined in postmatch 2 and postmatch 3 (p < 0.01) when compared with the baseline. Serum CK and LDH activity increased significantly after the third match (p < 0.01). It was concluded that 3 successive judo matches induced a decline of peak torque and muscle power in the upper and lower limbs, respectively, and also provoked an increase of muscle damage markers. These findings may provide important knowledge for coaches and physical trainers to improve judo-specific strength training in both the upper and lower limbs.

Use of Cold-Water Immersion to Reduce Muscle Damage and Delayed-Onset Muscle Soreness and Preserve Muscle Power in Jiu-Jitsu Athletes

“…Pinho Júnior et al 8 observed an inverse correlation between serum LDH and perceived muscle soreness (r ¼ À0.53) and upper limb power (r ¼ À0.32) in jiu-jitsu athletes who underwent CWI after simulated competition. Detanico et al 1 reported an increase in serum LDH levels and less lower limb power in judo athletes after 3 successive matches. According to Warren et al, 46 strenuous exercise caused structural disruption of sarcomeres, resulting in membrane damage and failures in the coupling process triggering muscle contraction.…”

“…1 However, strenuous exercise promotes biochemical and cellular changes that result in deterioration of the muscle structure, decreasing muscle power. 2,3 In this context, many investigators have studied muscle damage arising from high-intensity exercise because it interferes with sport performance.…”

Influência da gordura corporal no desempenho do salto com contramovimento em judocas de diferentes categorias de peso

“…Em esportes de combate, diversos estudos têm utilizado o desempenho no salto vertical com o intuito de verificar efeito de treinamento 21 , discriminar o nível competitivo [22][23] , sexo e categoria de peso 11,24 e como marcador de fadiga antes e após sequência de lutas [25][26][27][28] , como sintetizado na TABELA 4. Os valores de altura do salto obtido na presente investigação, considerando a média das categorias (45,4 ± 2,4 cm), é similar a alguns estudos 11,27 e superior aos demais [21][22]28 que analisaram esta variável para a mesma faixa etária e nível competitivo. Nenhum dos estudos analisados comparou o salto vertical entre categorias, considerando as variáveis antropométricas dos atletas.…”

Estado Físico, Fisiológico E Psicossocial De Atletas Do Tae Kwon Do Na Pré-Competição

“…Já foi evidenciado um aumento do dano muscular em atletas que não realizaram um polimento antes da competição, a exemplo do estudo de Marin et al 29 , com dez atletas de handebol avaliados antes de uma competição e após seis meses de treinamento específico. Detanico et al 30 , do mesmo modo, encontraram um aumento do dano muscular em 20 judocas, no entanto, estes atletas foram avaliados após sessões de lutas simuladas, possibilitando, assim, avaliar apenas a resposta fisiológica aguda.…”