Comparison of Patterns of Skill Actions between Analog and Electronic Protectors in Taekwondo: A Log-Linear Analysis = Comparison of Patterns of Skill Actions between Analog and Electronic Protectors in Taekwondo: A Log-Linear Analysis
저자
발행기관
학술지명
권호사항
발행연도
2019
작성언어
-주제어
자료형태
학술저널
수록면
129-134(6쪽)
제공처
Purpose: The purpose of this study was to compare the patterns of skill actions executed during Taekwondo competitions when wearing and not wearing an electronic protector.
Methods: To achieve this purpose, 110 matches from two university-level Taekwondo championships were taped and analyzed. The performance skills were composed of 18 detailed skills and grouped into five categories by considering kicks to the target area (chest or head/face). The data were organized in the form of a contingency table that demonstrated the relationship between grouping factors (skills, protectors, win-lose, and weight-division). A log-linear analysis was carried out to investigate the effect of the grouping factors (IVs) on the skills (DV) using IBM SPSS Statistics Ver. 21.0.
Results: The results obtained in the present study can be summarized as follows. First, the overall proportion of “points” called by the judge for the general protector (32.2%) was approximately 3.4 times that for the electronic protector (9.5%). Second, for the electronic protector, the proportions of kicks to the chest area were in the following order: R-kick (44.7%), P-kick (19.3%), T-kick (8.7), and DR-kick (7.6%). For the general protector, the order differed slightly, with T-kick and P-kick switched around with different proportions. Third, the proportion of kicks to the head/face was higher for the electronic protector (19.8%) than for the general protector (10.4%), and this difference was even more distinct when the light(33.5%(electronic) vs.6.5%(general)) and heavy(1.4%(electronic) vs.13.3%(general)) weight divisions were compared.
Conclusion: This study compared the patterns of skill actions in Taekwondo competitions with and without an electronic protector. Two competitions from the same category (university) with similar levels of playing characteristics were selected, and all matches were taped for video-replay analyses. A log-linear statistical method was applied to analyze the generated sample data. The total frequency of the executed skill actions in both the competitions was very similar: 2,483 with the electronic protector and 2,433 with the general protector. This indicated that the two competitions selected for comparison were indeed at similar levels in terms of playing characteristics. The results of the analyses can be summarized as follows. First, the overall proportion of “points” called by the judge for the general protector (32.2%) was approximately 3.4 times larger than that for the electronic protector (9.5%). Second, the proportions of kicks to the chest area for the electronic protector were in the following order: 44.7% (R-kick), 19.3% (P-kick), 8.7% (T-kick), and 7.6% (DR-kick). For the general protector, the order was slightly different, with T-kick and P-kick being switched around with different proportions: R-kick (56.5%), T-kick (13.5%), P-kick (11.1%), and DR-kick (8.6%). Second, the proportion of kicks to the head/face was higher for the electronic protector (19.8%) than for the general protector (10.4%). This difference was even more distinct when the light weight division (33.5% (electronic) vs. 6.5% (general)) and the heavy weight division (1.4% (electronic) vs. 13.3% (general)) were compared. Third, the match status (win/lose) had no significant effect on the pattern of playing actions for both the protectors.
Why is this important? How can it be used in the future? Is there a large effect on players, coaches and judges?
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