HEAD-TOE DISTANCE AS A SIMPLE MEASURE TO EVALUATE AMPLITUDE OF CIRCLES ON POMMEL HORSE

Authors

  • Toshiyuki Fujihara Osaka University of Health and Sport Sciences, Osaka, Japan
  • Pierre Gervais University of Alberta - Faculty of Kinesiology, Sport, and Recreation, Edmonton, Canada
  • Gareth Irwin Cardiff Metropolitan University - Cardiff School of Sports, Cardiff, Great Britain

DOI:

https://doi.org/10.52165/sgj.11.2.189-200

Keywords:

gymnastics, rotation, quality, evaluation, feedback, coaching, judging

Abstract

To develop scientifically-valid tools to monitor performance in practice, a critical question is what to measure. On pommel horse, the importance of fundamental skills called circles is uncontroversial, and one of the key performance qualities of circles is the amplitude of the movement. Previous studies have used joint angles or the magnitude of a body part’s trajectory to evaluate the amplitude, but we hypothesized that the distance between two points, namely a head and toes might be substituted despite its relative simplicity. This study examined the use of Head-Toe Distance (HTD) normalized by the gymnast’s body height as a simple variable to potentially evaluate the amplitude of circles. The kinematic data of circles performed by 18 elite gymnasts were collected with a Qualisys motion capture system operating at 100 Hz. HTD and its horizontal component, HTDh, were computed along with their relationships to the outcome scores given by the official judges, as well as the other amplitude variables: the horizontal diameters of shoulder and ankle trajectories; the body flexion angle; and in the rear support position, the shoulder extension angle and the head position. The results supported HTDh, rather than HTD, for its potential usage as a single variable to evaluate the amplitude of circles. The benefits of HTDh compared to the other variables lies in its potential validity despite its relative simplicity in assessment. Because computing HTDh requires only the positional data of the head and toes, it may have greater practical applications as an evaluative tool in gymnastics.

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References

Baudry, L., Sforza, C., Leroy, D., Lovecchio, N., Gautier, G., & Thouvarecq, R. (2009). Amplitude variables of circle on the pedagogic pommel horse in gymnastics. Journal of Strength and Conditioning Research / National Strength and Conditioning Association, 23(3), 705-711.

de Leva, P. (1996). Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters. Journal of Biomechanics, 29(9), 1223-1230.

Fujihara, T. (2017) Using a kinect device to evaluate amplitude of horizontal rotation on the pommel horse. Proceedings of the 35th Conference of the International Society of Biomechanics in Sports, Cologne. Germany.

Fujihara, T. , Fuchimoto, T., & Gervais, P (2009) Biomechanical analysis of circles on pommel horse. Sports Biomechanics, 8(1), 22-38.

Fujihara, T., Yamamoto, E., & Fuchimoto, T. (2017). Run-up velocity in the gymnastics vault and its measurement. Japan Journal of Physical Education, Health, and Sport Sciences, 62, 435-453.

Fujihara, T., & Gervais, P. (2010). Kinematics of side and cross circles on pommel horse. European Journal of Sports Sciences, 10(1), 21-30.

Fujihara, T., & Gervais, P. (2012a). Circles on pommel horse with a suspended aid: Influence of expertise. Journal of Sports Sciences, (30)6, 583-589.

Fujihara, T., & Gervais, P. (2012b). Circles on pommel horse with a suspended aid: Spatio-temporal characteristics. Journal of Sports Sciences, (30)6, 571-581.

Fujihara, T., & Gervais, P. (2013) Head positions are related to the performance quality of circles on pommel horse. Proceedings of the 31st Conference of the International Society of Biomechanics in Sports, Taipei. Taiwan.

Fujihara, T., Yamamoto, E., & Gervais, P. (2015). Toward an ideal performance of circles on pommel horse—centrifugal force and mass-centre velocity—. Proceedings of the 33rd International Conference on Biomechanics in Sports, Poitiers, France.

George, G.S. (2010). Championship gymnastics: Biomechanical techniques for shaping winners. Carlsbad, CA: Designs for Wellness Press.

Grassi, G., Turci, M., Shirai, Y. F., Lovecchio, N., Sforza, C., & Ferrario, V. F. (2005). Body movements on the men's competition mushroom: a three dimensional analysis of circular swings. British Journal of Sports Medicine, 39(8), 489-492.

Halvorsen, K. (2003). Bias compensated least squares estimate of the center of rotation. Journal of Biomechanics, 36(7), 999-1008.

Holm, S. (1979). A simple sequentially rejective multiple test procedure. Scandinavian Journal of Statistics, 6, 65–70.

International Gymnastics Federation. FIG Men's Technical Committee (Ed.) (2013). Code of Points. Retrieved from http://www.fedintgym.com/rules/docs/06-code/01-mag/codemag0701-efs.zip

International Gymnastics Federation. FIG Men's Technical Committee (Ed.) (2017). Code of Points. Retrieved from http://www.fig-gymnastics.com/publicdir/rules/files/en_MAG CoP 2017-2020.pdf

Kaneko, A. (1974). Coaching of artistic gymnastics Tokyo: Taishukan.

Karácsony, I., & Čuk, I. (1998). Pommel horse exercises: methods, ideas, curiosities, history Ljubljana: University of Ljubljana and Hungarian Gymnastics Federation.

Knudson, D. (2009). Significant and meaningful effects in sports biomechanics research. Sports Biomechanics, 8(1), 96-104.

Liubov, B. (2017). Robot judging is coming to gymnastics. Retrieved Date Accessed, 18th September, 2017 from http://eng.gymnovosti.com/robot-judging-is-coming-to-gymnastics/.

Plessner, H., & Schallies, E. (2005). Judging the cross on rings: a matter of achieving shape constancy. Applied Cognitive Psychology, 19(9), 1145-1156.

Yokoi, T., & McNitt-Gray, J. L. (1990). A threshold to determine optimum cutoff frequency in automatic data smoothing using digital filter. In American Society of Biomechanics (Ed.), Proceedings for the 14th annual meeting of the American Society of Biomechanics (pp. 209-210). FL: University of Miami.

Yoshida, K., & Shiroma, A. (2001). Pommel horse. In Men’s Artistic Gymnastics Department of Japan Gymnastics Association (Ed.), Training manual for male junior gymnasts (pp. 50– 126). Wakayama: Minakuchi Corp.

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Published

2019-06-01

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Articles

How to Cite

Fujihara, T., Gervais, P., & Irwin, G. (2019). HEAD-TOE DISTANCE AS A SIMPLE MEASURE TO EVALUATE AMPLITUDE OF CIRCLES ON POMMEL HORSE. Science of Gymnastics Journal, 11(2), 189-200. https://doi.org/10.52165/sgj.11.2.189-200

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