A Study on Using Three-dimensional Motion Capture to Teach and Evaluate Latin Dance Techniques of Forward Walk followed by Swing

Abstract

In recent years, many scholars have conducted in-depth research on classroom teaching reform as China's education reform has been deepening. Although there are certain achievements in sports dance education and teaching, it is still worthy of further exploration and empirical research on how to use appropriate and effective teaching methods in the classroom teaching as guided by the education reform in the new era, to make the education evaluation more scientific, professional and objective by combining modern information technology with education teaching in-depth. In this study, the three-dimensional motion capture is applied to the teaching of Latin dance in colleges and universities. The author selects excellent Latin dancers' $(\mathbf{n}=6)$, uses their forward walk with swing technical movements as the teaching content, and makes movement analysis with image processing technology. In this study, the students $(\mathbf{n=20})$ of the sports dance elective course at Guangzhou Sport University are selected as the experimental subjects, and they are compared and analyzed through the teaching effect of the two groups after 8 weeks of teaching experiment. According to the results of the study, (1) after analyzing the excellent Latin dancers' movements, the technical movements of the forward walk followed by swing can be divided into 6 phases, and each phase has different technical characteristics; (2) after the teaching experiment, two groups show significant differences in the technical scores of Latin dance movements $(\mathbf{P<0.01})$ by analyzing two groups of students' displacement changes of the center of gravity in technical movements, compared with the experimental group, the excellent Latin dancers' group has less offset in the X-axis direction, less change in vertical displacement in the Z-axis direction, and less speed in the Y-axis direction in the ending phase, their body trunk is close to vertical in the swing phase. All of these reflect better control of the center of gravity and smooth and stable movements, which are in high agreement with the movement scoring results. Conclusion: It is of guiding significance to apply three-dimensional motion capture to the teaching of technical movements of sports dance, and it is a positive reference for the objective evaluation and quantification of technical movements.