Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Three-dimensional Kinematic Analysis of the Yurchenko Layout with 360-degree Twist in Female Vaults: Deterministic Model and Judges' Scores

  • Park, Cheol-Hee (Department of Physical Education, Chonnam National University) ;
  • Kim, Young-Kwan (Department of Physical Education, Chonnam National University)
  • Received : 2017.02.14
  • Accepted : 2017.03.22
  • Published : 2017.03.31
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Abstract

Objective: The purpose of this study was to identify kinematic variables that govern successful performance and judges' scores and to establish correlative relationships among those of Yurchenko layout with a full twist in female vaults. Method: Four video cameras with sampling rate of 60 Hz collected 32 motion data of Yurchenko vaults from twenty-two female participants (age: $18.6{\pm}3.6years$, height: $153.0{\pm}6.5cm$, mass: $44.7{\pm}7.3kg$) during national competition. Posting processing and calculations of kinematic variables were performed in Kwon 3D XP and $Matlab^{(R)}$ programs. Correlation and regression analyses were applied to find the relationships between the obtained scores and kinematic variables. Deterministic model (Hay & Reid, 1988) was used to investigate the strength of correlative relationships among kinematic variables. Results: The obtained scores from the judges' decision were mainly affected by post-flight peak height, horse contact time, knee angle at landing, and horse takeoff angle. Strong blocking during horse contact was required to get successful performance and obtain high scores. Modified deterministic model showed that round-off entrance and takeoff angles and resultant velocity of the center of mass (CM) during the roundoff phase were the starting variables affecting performance in the following kinematics. Knee angle at landing, a highly influential variable on the obtained point, was only determined by judges' decision without significant correlative relationship with previous kinematic variables. Conclusion: The obtained scores highly depended on kinematic variables of post-flight and horse contact phases that were affected by those from the previous phases including round-off postures and resultant velocity of the body center of mass.

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References

  1. Abdel-Aziz, Y. I. & Karara, H. M. (1971). Direct linear transformation form comparator coordinates in object space coordinates in close range photogrammetry. Proceedings of ASP/UI Symposium on Close Range Photogrammetry. Urbana, IL (1-18). Fall Church, VA: American Society of Photogrammetry.
  2. Carlton, M. (1988). Round-off vaults. Gymnastic Coach, 7, 19-23.
  3. FIG (2013). Federation of International Gymnastics. International Code of point-Women's Artistic Gymnastic.
  4. Han, K. I., Lee, D. H., Yoon, D. H. & Park, S. Y. (2011). Sources of stress and coping styles of gymnastic judges. Korean Journal of Physical Education, 3, 181-196.
  5. Hay, J. G. & Reid, J. G. (1988). Anatomy, mechanics, and human motion, Englewood Cliffs, NJ: Prentice Hall.
  6. Kim, Y. J. & Kim, H. Y. (2011). Strategic Analysis for Vault in 2010 Women's Gymnastics Artistic World Championships. The Korean Journal of Sport, 9(3), 193-203.
  7. Koh, M. & Jennings, L. (2003). Dynamic optimization: inverse analysis for the Yurchenko layout vault in women's artistic gymnastics. Journal of Biomechanics, 36, 1177-1183. https://doi.org/10.1016/S0021-9290(03)00085-X
  8. Koh, M. & Jennings, L. (2007). Strategies in preflight for an optimal Yurchenko layout vault. Journal of Biomechanics, 40, 1256-1261. https://doi.org/10.1016/j.jbiomech.2006.05.027
  9. Koh, M., Jennings, L., Elliott, B. & Lloyd, D. (2003). A predicted optimal performance of the Yurchenko layout vault in women's artistic. Journal of Applied Biomechanics, 19, 187-204. https://doi.org/10.1123/jab.19.3.187
  10. Kwon, Y. H., Fortney, V. L. & Shin, I. S. (1990). 3-D analysis of Yurchenko vaults performed by female gymnasts during the 1988 Seoul Olympic Games. International Journal of Sport Biomechanics, 6, 157-176. https://doi.org/10.1123/ijsb.6.2.157
  11. Langsley, E. (1983). The 1982 World Cup. International Gymnast, 25(1), 8.
  12. Park, C. H. & Kim, Y. K. (2016). Kinematis Comparisons among the Level of Acquired Points in Yurchenko $360^{\circ}$ Stretched Twist Vault Technique in Female Gymnastic. The Korean Journal of Physical Education, 55(6), 771-781.
  13. Plagenhoef, S. C., Evans, F. G. & Abdelnour, T. (1983). Anatomical data for analysis human motion. Research Quayterly for Exercise and Sports, 54(2), 169-178. https://doi.org/10.1080/02701367.1983.10605290
  14. Seo, J. Y. (2016, August 15). USA Byles... Conquer the horse. The JTBC News. Retrieved from http://news.jtbc.joins.com/article/ArticlePrint.-aspx?news_id=NB11292118
  15. Seeley, M. K. & Bressel, E. (2005). A comparison of upper-extremity reaction forces between the Yurchenko vault and floor exercise. Journal of Sports Science and Medicine, 4, 85-94.
  16. Song, J. H., Kim, D. M. & Moon, J. H. (2015). Case Analysis of Vault "Shirai-Kim Hee Hoon" Technique for Assessing Skill Completeness. Journal of Digital Convergence, 13(11), 441-448. https://doi.org/10.14400/JDC.2015.13.11.441
  17. Takei, Y. (1989). Techniques Used by Elite Male Gymnastic Performing a Handspring Vault at the 1987 Pan American Games. International Journal of Sport Biomechanics, 5, 1-25. https://doi.org/10.1123/ijsb.5.1.1
  18. Takei, Y. (1991). A comparison of techniques used in performing men's compulsory gymnastic vault at the 1988 olympic. International Journal of Sport Biomechanics, 7, 54-75. https://doi.org/10.1123/ijsb.7.1.54
  19. Takei, Y. (1998). Three dimensional analysis of handspring with full turn vault: Deterministic model, coaches' beliefs, and judges' scores. Journal of Applied Biomechanics, 14, 190-210. https://doi.org/10.1123/jab.14.2.190
  20. Takei, Y. (2007). The roche vault performed by elite gymnasts: somersaulting technique, deterministic model and judges' scores. Journal of Applied Biomechanics, 23, 1-11. https://doi.org/10.1123/jab.23.1.1
  21. Takei, Y., Blucker, E. P., Dun, J. H., Myers, S. A. & Fortney, V. L. (1996). A three-dimensional analysis of the Men's compulsory vault performed at the 1992 Olympic Games. Jounral of Applied Biomechanics, 12, 237-257. https://doi.org/10.1123/jab.12.2.237
  22. Takei, Y., Blucker, E. P., Nohara, H. & Yamashita, N. (2000). The hecht vault performed at the 1995 world gymnastics championships: deterministic model and judges' scores. Journal of Sports Science, 18(11), 849-863 https://doi.org/10.1080/026404100750017788
  23. Takei, Y., Dunn, H. & Blucker, E. P. (2007). Somersaulting techniques used in high-scoring and low- scoring Roche vaults performed by male Olympic gymnasts. Journal of Sports Science, 25(6), 673-685. https://doi.org/10.1080/02640410600818309
  24. Yeo, H. C. (2006). The analysis of Yurchenko's 900 Degree Twist Technique with Stretched Body. The Korean Journal of Sport Biomechanics, 16(4), 165-173. https://doi.org/10.5103/KJSB.2006.16.4.165
  25. Yeo, H. C. (2006). The Kinematic Analysis for Coaching Methods Through Yurchenko's 720 Degree Twist Technique with Stretched Body. The Korean Journal of Physical Education, 45(5), 495-505.
  26. Yeo, H. C., Kim, D. H. & Kim, Y. J. (2011). 2009 JAPAN CUP Content Analysis of Women's Gymnastics All-Around Final. Journal of Coaching Development, 13(1), 105-114.
  27. Yoon, C. S. (2003). Kinesiological Analysis of Long Horse Gymnastics Yurchenko Body Stretch 720 Degree Twisting Motion. Korea Sport Research, 14(6), 1449-1461.
  28. Yoon, C. S. & Kim, T. S. (2006). The Kinematic Difference to the Skill Level in the Yurchenko Stretch Skill of Horse Vaulting. The Korean Journal of Sport Biomechanics, 16(2), 135-144. https://doi.org/10.5103/KJSB.2006.16.2.135
  29. Yoon, C. S. & Kim, T. S. (2006). The Relationship with the Mechanical Factor and Angular Momentum of the Yurchenko Stretch Skill in Horse Vaulting. Korea Sport Research, 17(3), 177-186.
  30. Yoon, C. S. & Min, A. Y. (2011). The Kinematical Analysis of Yurchenko Streched at Horse Vaulting. The Korea Journal of Sports Science, 20(1), 1123-1124.
  31. Yoon, C. S., Min, A. Y., Hah, C. K., Park, J. C. & Lee, J. H. (2008). Comparison on Kinematic Factors According to Skill Levels of Women's Yurchenko Motion in New Horse Vaulting. The Korea Journal of Sports Science, 17(4), 1509-1519.