[논문]The Behavioral Analysis of Dance Sports Judge's Visual Searching Strategies: Focusing on the Skating System

Kim, Mi-Sun; Lee, Ki-Kwang; Kim, Kwantae

doi:10.5103/kjsb.2020.30.3.235

The Behavioral Analysis of Dance Sports Judge's Visual Searching Strategies: Focusing on the Skating System 원문보기

한국운동역학회지 = Korean journal of sport biomechanics, v.30 no.3, 2020년, pp.235 - 245

Kim, Mi-Sun (Kookmin University Biomechanics & Sports Engineering Laboratory) , Lee, Ki-Kwang (Kookmin University Biomechanics & Sports Engineering Laboratory) , Kim, Kwantae (Kookmin University Biomechanics & Sports Engineering Laboratory)

Abstract ▼ AI-Helper

Objective: The purpose of this study was to investigate the differences between visual search, eye fixation positions, and eye fixation position on whole body regions while judging final matches of dance sports. Method: Ten experienced judges (male 6, female 4) and six dance sports couples belonging to the top Korean leagues in the Korea Dance sports Federation were participated. Wearable eye trackers were used for data collection. The independent t-test was conducted to examine the effects of gender, and the two-way ANOVA was conducted to examine the effects of judges' gender, dance event, and ranking. Results: It was found that the movement of male contestants was preferred, and the gaze fixation was high for torso movements in the judges' evaluations. Moreover, attention was focused on the upper body rather than the lower body; this was maintained for about seven seconds to evaluate each couple. Conclusion: This find was the relative comparison between the two couples was the determining factor in winning or losing.

주제어

표/그림 (13)

표 Table 1. Characteristic of judge (Mean ± SD)
그림 Figure 1. Wearable eye-tracker (Tobii Pro Glasses 2).
그림 Figure 2. Classification range by player's body parts (left), Skating system scorecards (right).
그림 Figure 3. Fixed position of gaze for each body region of male and female player.
표 Table 2. Analysis of visual search variables by player's gender (mean ± SD)
그림 Figure 4. Fixation duration time of ratio by the gender of judges.
그림 Figure 5. Fixation frequency by the gender of judges.
그림 Figure 6. Eye movement frequency by the gender of judges.
그림 Figure 7. Fixed position of gaze by body region according to the gender of judges in Chachacha (Left), Samba (right) event.
그림 Figure 8. Fixed position of gaze by body region according to the gender of judges in Paso doble (Left), Rumba (right) event.
그림 Figure 9. Fixed position of gaze by body region according to the gender of judges in Jive event.
표 Table 3. Analysis of visual search variables according to rank and dance events (mean ± SD)
그림 Figure 10. Fixation frequency on scorecard.

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문제 정의

Therefore, the purpose of this study was to investigate the difference between the visual search, eye fixation position, and eye fixation position of the whole body area during judging the final match of the dance sports. It could be used as a basis for understanding what criteria judge has evaluated in the actual game situation.
Thus, this study investigated what strategy and information were obtained when deciding on the evaluation of the game judges during the competition evaluation of the dance sports finals.

제안 방법

Players' back numbers were randomly selected and attached. After that, the judge participants signed the scorecard according to the skating system, and at the same time as the music began, the judges began to judge.
For designing the paradigm for the experiment, six dance sports couples who belong to the top Korean leagues in KDF were selected to create a game-like environment.
In this experiment, the visual search variables (gaze fixation duration ratio, gaze fixation frequency, eye movement frequency, gaze fixation location of the whole body area) of the judge were analyzed for about one minute and thirty seconds from the beginning of music in each event.
The gaze fixation location of the whole body area was analyzed by a head, trunk, arm, leg, full-body, and the rest respectively. The rest means looking out of the player, such as the scorecard or the surrounding environment.
It could be used as a basis for understanding what criteria judge has evaluated in the actual game situation. The hypothesis of the study was as follows; First, there would be a difference in preference for looking at male and female players in decision-making about dance sports game judge evaluation. Second, the visual search strategy according to the dance event would be different in the decision making for the evaluation of the judgment of dance sports competition.
The judges were then able to determine the rankings and check the scorecards into three types: comprehensive checks after the end of the music, checks before the end of the music, and before and after the end of the music. In addition, the music of each dance event is started, and the movement of the gaze is much in about three measures (10 seconds), and then it can be seen that the couple observes each other by fixing the gaze one by one.

데이터처리

0 (IBM, USA). An independent t-test was conducted to analyze according to gender. Two way ANOVA was conducted to analyze according to the gender of judges, dance event and ranking.
An independent t-test was conducted to analyze according to gender. Two way ANOVA was conducted to analyze according to the gender of judges, dance event and ranking. The significance level was set at .

성능/효과

The result of the position of eye fixation by body area for both male and female players showed that in the upper body, the eyes were fixed to the shoulder area, and the lower body was fixed to the hip and foot area for a long time. Furthermore, the result of the visual search strategy based on gender indicated that both the male and female judges had about 2.5 times higher FR, 2.2 times FF, and 1.9 times higher EF than other body areas. The high FR is related to the efficiency of the amount of information that can be obtained for a given time (Park et al.
FR did not show a statistically significant difference in main effects and interactions between couples and dance events during dance sports competition judging, but, in the case of FF, there was a statistical difference in interaction. In addition, although FR, FF, and EF did not show statistically significant differences according to dance event, however, there was a statistically significant difference according to the ranking (Table 3).

후속연구

Moreover, each player's career and technical skills may be different. Therefore, further study is needed to determine how the ratio of training proficiency difference between male and female players affects win and loss.

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