Today Judo high level athletic competitions, such us Olympics and Internationals ones, are characterized by always more quick and offensive matches. The trainers pay attention to training methods able to increase the explosive strength in techniques projection of Judo. In this work we analyzed, Verchoshanskij stimulation method: an overload training done before technique exercises, to increase rapidity. We applied this method on judo training.
Methods: The experimentation was conducted on 10 Judo agonistic athletes (age: 16/29; weight: 57/93 kg; height: 153/185cm; age of practice: 8/21). To measure the improvement of rapidity obtained by the method of stimulation, we calculated the time of technique execution, with the TEP test (Projection Execution Time Villani et all, 2001), an integrated system of photocells and a footboard with piezoelectric cells, that permits to calculate the split time and projection time of Judo techniques. Athletes performed the TEP test during 4 repetitions of preferred techniques (Tokui Waza or special technique) at the highest speed, making a 45 seconds pause between the techniques. After this Judokas performed a sequence of squat warm up and subsequently 3 series of 4 squat repetitions at 85% of 1RM, with a pause of 3 minutes between the series. At the end of 4 minutes recovery, the athletes repeated again the test as the first time. The difference of the results obtained before and after the squat has been analysed statistically. The reliability of the protocol has been verified by test-retest correlation.
Results: The correlation between the results of the test and retest highlighted some values of r higher than 0,90 in all the parameters considered (p<0.001) so the protocol can be defined very reliable. The analysis of the split time pointed out a very high correlation with r values of 0,99. The comparison of the results before and after the squat trial, revealed, in every studied case, a higher rapidity in the execution of techniques after the stimulus with percentage differences in all the parameters, varying from 10% to 17% (p<0,05).
Conclusions: The Anova results obtained permit us to confirm that the performed techniques after specific squat is really better than presquat values. So, the method of stimulation can be considered an important system of training useful to increase the rapidity/explosive strength .
Anyway, is important to point out that the results have been inferior to the results obtained by Verchoshanskij in previous tests, conducted over other athletics discipline. (improvement over 20%) To obtain more interesting results it will be probably necessary to use the method of stimulus on athletes with more experience in the training with overloads
© Copyright 2009 14th annual Congress of the European College of Sport Science, Oslo/Norway, June 24-27, 2009, Book of Abstracts. Published by The Norwegian School of Sport Sciences. All rights reserved.
|Subjects:||judo training velocity movement movement velocity speed load organization stimulation method technique|
|Published in:||14th annual Congress of the European College of Sport Science, Oslo/Norway, June 24-27, 2009, Book of Abstracts|
|Editors:||S. Loland, K. Boe, K. Fasting, J. Hallen, Y. Ommundsen, G. Roberts, E. Tsolakidis|
The Norwegian School of Sport Sciences
|Document types:||congress proceedings