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The Journal of Sports Medicine and Physical Fitness 2014 December;54(6):715-24

lingua: Inglese

The effects of one-week training camp on motor skills in Karate kids

Padulo J. 1, 2, 3, Chamari K. 2, 4, Chaabène H. 5, Ruscello B. 6, Maurino L. 7, Sylos Labini P. 6, Migliaccio G. M. 3

1 University e-Campus, Novedrate , Como, Italy;
2 Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sport, Tunis, Tunisia;
3 CONI - Italian Olympic Committee “Sardinia”, Cagliari, Italy;
4 Research and Education Center, Aspetar, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar;
5 Research Unit, Analysis and Evaluation of factors affecting the sport performance, Higher Institute of Sports and Physical Education, Ksar said, Manouba University, Tunis, Tunisia;
6 School of Sports and Exercise Sciences, Faculty of Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy;
7 Italian Federation of Martial Art, Rome, Italy


AIM: The purpose of this study was to evaluate the effects of short-term increased hours of specific high-intensity karate training on motor skills in young karate athletes aged between 8 and 12 years.
METHODS: Seventy-three children, who regularly trained three karate sessions per-week were divided in two groups: high-intensity karate group (HG=53) and low-intensity karate group (LG=20). HG trained for 7 days: with two sessions per-day (one hour per-session) including specific karate techniques as well as coordination, balance, and flexibility exercises. LG, however, followed the same number of karate training sessions as before the beginning of the study (i.e., three sessions per-week with one hour per-session). Participants performed a battery of tests, 24 hours pre- and one week post-training: a medicine ball throw (MBT), standing long jump (SLJ), active joint flexibility (JM) and lateral/frontal jumps (JLT).
RESULTS: Significant differences between results of pre and post karate training (ANOVA with repeated measures) included: MBT (P<0.05), SLJ (P<0.0001), JM (P<0.0001), JLT (P<0.0001); whilst the interaction training × time was: MBT (P=0.145), SLJ (P<0.0001), JM (P<0.0001), JLT (P< 0.0001). The HG significantly improved their performance on MBT by 3.23% (P<0.05), SLJ by 5.09% (P<0.001), JM by 1.51% (P<0.001), and JLT by 21.36% (P<0.001). For LG group, there were no significant differences between pre and post-testing in all fitness tests.
CONCLUSION: Muscular power, flexibility and coordination represent the basics of karate fitness component. In this regard, short term high-intensity karate training represents an effective method for enhancing muscular power and range of motion (i.e. flexibility) in young karate athletes aged between 8 and 12 years. Further studies are needed to support these findings with deeper data.

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