Successful transition to groundwork combat during Junior and Senior Judo World Championships

The main goal of the present study was to describe the successful transition phases from standing combat to groundwork combat in a high-level judo competition (2017 World Championship) to determine the type of transition (turtle, supine, prone, half-guard, besides, guard, standing and seated) and their rhythms (i.e. time spent by the scoring athletes) mostly used by these athletes. Our sample was based on the junior and senior, male and females, 2017 Judo World Championships. Transition phases (n = 373) that resulted in a score during the junior (n = 179) and senior (n = 194) were analysed. The main findings of this study indicated an immediate link between standing and groundwork actions observed in almost half of the occurrences. Most of the scoring actions (~75%) were achieved through an osae-komi-waza (immobilisation techniques), and these actions were performed mainly when the match was tied (~71%). No significant differences (p > 0.05) were observed between sex and age groups concerning the type of techniques and body position. The different types of transitions were used similarly along the competition phases, indicating that athletes need to be able to cope with different situations in the transition phase to be successful

Effects of recovery type after a judo combat on blood lactate removal and on performance in an intermittent anaerobic task

Aim. The objective of this study was to verify the effects of active (AR) and passive recovery (PR) after a judo match on blood lactate removal and on performance in an anaerobic intermittent task (4 bouts of upper body Wingate tests with 3-min interval between bouts; 4WT).Methods. The sample was constituted by 17 male judo players of different competitive levels: A) National (Brazil) and International medallists (n. 5). B) State (São Paulo) medallists (n. 7). Q City (São Paulo) medallists (n. 5). The subjects were submitted to: 1) a treadmill test for determination of VO2peak and velocity at anaerobic threshold (VAT); 2) body composition; 3) a 5-min judo combat, 15-min of AR or PR followed by 4WT.Results. The groups did not differ with respect to: body weight, VO2peak, VAT, body fat percentage, blood lactate after combats. No difference was observed in performance between AR and PR, despite a lower blood lactate after combat (10 and 15 min) during AR compared to PR. Groups A and B performed better in the high-intensity intermittent exercise compared to athletes with lower competitive level (C).Conclusion. The ability to maintain power output during intermittent anaerobic exercises can discriminate properly judo players of different levels. Lactate removal was improved with AR when compared to PR but AR did not improve performance in a subsequent intermittent anaerobic exercise