Whole practice combined with Kuzushi preparation enhances learning of Tai Otoshi in experienced young judokas

This study investigated the effects of different practice schedules—static traditional, dynamic traditional, whole with kuzushi preparation, and progressive parts with kuzushi—on the acquisition of the tai otoshi technique in experienced young judokas. Thirty-two children (8.63 ± 0.99 years), each with at least one year of judo training, were randomly assigned to four groups. The protocol included a pre-test, four practice sessions (totaling 160 trials), a post-test, and a retention test. Performance was evaluated via video analysis using a validated checklist assessing global technique, kuzushi movement, and actual opponent unbalancing. All groups improved in global technique and kuzushi movement pattern. However, only the whole practice group showed significant gains in actual kuzushi across post-test and retention phases. Intergroup analysis demonstrated that this group outperformed the others in both global technique and opponent unbalancing, particularly in retention. These findings suggest that whole practice incorporating pre-kuzushi strategies promotes more effective learning than traditional or segmented approaches, even among children with prior experience. The study advances the discussion on whole versus part practice, indicating that tai otoshi, though moderately complex, benefits from high task organization and continuous execution. It also critiques traditional uchikomi, which may neglect realistic fight conditions. Integrating pre-kuzushi appears to improve timing, leverage, and opponent destabilization, key components in successful execution. The results reinforce the value of aligning practice methods with combat demands to optimize motor learning in martial arts.