Judo Information Site Research

1. The Aim of Study

The aim of the work is to try to characterize time structure of judo fight and comparing the outcome of such research with previous researches (Sikorski 1985, Sterkowicz and Kesek 1985). We tried to trace the tendencies of changes in this field and use them for practical training postulates.

2. Material and Methods

Research material comprised 92 video-recorded fights of seniors made during the 40th Individual Polish Senior Championship in Cracow (1996) and Polish Senior Individual-Team League in Bytom-City (1996). In those tournaments took part the leading Polish judoists: P.Nastula, R.Kubacki, K.Wojdan, P.Kamrowski, J.Lewak, M.Pitula. During the above mentioned championships there were recorded the whole fights including breaks during their time, in all weight categories starting from elimination round until the final round. In working out the outcome of the research basic statistical methods were used arithmetical average±standard deviation, and the percentage role of different factors.

3. Results

On replaying the video of recorded fights the following results were obtained:
1. The time of the whole fight with all breaks (235,93±159,75s);
2. Time of the effective fight without breaks (174,42±110,17s). The index of using the maximal time of a fight, i.e. 5 min. was 58,3%.

Owing the statistical analysis we found the noteworthy characteristics of pattern senior judoists bout:
1. Summarized time of breaks (61,51±59,4s);
2. Summarized time of fights in NE-WAZA (42,91±42,29s);
3. Summarized time of fights in TACHI-WAZA (131,55±87,96s).

You can see those results in percent on the Figure 1.

Fig. 1. Percentage structure of time of judo contest

The typical time structure of senior judo contest has following numerical characteristics:
1. Single sequence of fight in NE-WAZA (15,79 ±14,26s, n = 250);
2. Single sequence of contest in TACHI-WAZA (18,9 ±13,16s, n = 640);
3. Single break (10,32 ±10,44s, n = 540). See Figure 2.

Fig. 2. Time of single sequences of continuous fight and breaks in fight (average in seconds) The specific indices in consecutive minutes of the judo contests were showed on the next Figures 3-4.

Fig.3. Average time of sequences of continuous fights and breaks in consecutive minutes of tournament senior judo bouts

Fig. 4. Average time of single sequence of fight in Ne-waza

4. Discussion, conclusions and final remarks

On the basis of comparing the research carried out in 1996 with the results of 1985 (Table 1).

Table 1. A comparison of chosen parameters characterizing Seniors Judo Fight in years 1983 and 1996

The following conclusions were noticed:
1. Serious shortening of the effective time of a fight;
2. Decreasing of the time of fight in TACHI-WAZA in comparison with the time of the whole fight;
3.Shortening breaks during a fight.

In final remarks: From coach point of view and practice those results can be used for proper building of interval training methods, projecting special judo fitness tests etc.

The next step of the research process of judo fight will be an analysis of subject or informative structure of the same 92 seniors judo contests in which we were noticed total number of 819 technical actions. We are expected significant changes manifested in the past time period by: an effectiveness of attacks in TACHI-WAZA and an asymmetry of technical schooling, i.e. left- side/right side techniques relation and in the number of hip-techniques in the total number of attacks etc. We try to verify hypothesis in the next article.

5. Bibliographical references

1. Sikorski W. Aktualne problemy treningu i walki sportowej Judo. Instytut Sportu – Warszawa 1985 (In Polish).
2. Sterkowicz S., Kesek M. Ocena wyszkolenia techniczno-taktycznego zawodnik¢w uczestnik¢w og¢lnopolskich zawod¢w Judo. Sport Wyczynowy 1985, nr 7, p. 12 (article in Polish; Summary in English (In:) research/.)