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The Journal of Sports Medicine and Physical Fitness 2017 June;57(6):872-8

DOI: 10.23736/S0022-4707.16.06320-9


lingua: Inglese

Effects of traditional judo training session on muscle damage symptoms

Daniele DETANICO 1, Juliano, dal PUPO 1, Emerson FRANCHINI 2, David H. FUKUDA 3, Saray G., dos SANTOS 1

1 Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil; 2 School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; 3 Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL, USA


BACKGROUND: This study aimed to analyze the acute effects of a judo training session on muscle strength, delayed-onset muscle soreness (DOMS), and serum creatine kinase (CK) activity.
METHODS: Ten male judo athletes participated in this study and performed a 90-min traditional judo training session. The following measurements were performed before and 48 hours after the training: shoulder external/internal rotation isokinetic torque, countermovement jump (CMJ), DOMS, and blood draw for serum CK analysis. Student’s t-test with significance level set at 5% and, effect size analysis were used.
RESULTS: Significant reduction was found in jump height in the CMJ after the training session (2.9%; moderate effect; P=0.02). No significant differences were observed in any of the measures of shoulder external/internal rotation isokinetic torque (P>0.05). An increase of the serum CK (49.4%; moderate effect; P=0.01) and DOMS (20.6%; large effect; P=0.003) were noted after the training session when compared to baseline.
CONCLUSIONS: Judo training session resulted in increased serum CK activity, and muscle soreness. The decrease of CMJ performance indicates impairment in the lower-limbs muscle power production. However, the lack of difference of shoulder external/internal rotation torque before and 48 hours after the training session may indicate that the interval was enough to recover the upper-limbs strength in judokas of this study. These markers of muscle damage can be used to control muscle adaptation progress and to avoid sports-related disorders of athletes with similar characteristics to those evaluated in this study.

KEY WORDS: Creatine kinase - Myalgia - Martial arts

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