TAKE-OFF HIP EXTENSION ANGLE INFLUENCE ON THE TUCKED BACK SOMERSAULT PERFORMANCE
Keywords:hip angle, angular velocity, mass trajectory center, back somersault
Back somersault is a basic element of gymnastics; its performance is strongly influenced by the take-off phase. The present work aimed to study how hip extension in the take-off of the tucked back somersault influences the velocity of rotation and the height of t h e somersault. To this end, we recorded a total of 60 somersaults by 4 gymnasts (i.e., 15 somersaults each). There were three groups of somersaults based on the instructions that were given to the gymnasts: no specific instruction, somersault as high as possible and rotate as fast as possible. The records were then analyzed in order to quantify the following variables: maximal height of the mass center and maximal body angular velocity during somersault, the hip angle and the knee angle at the take-off. Gymnasts seemed to be inclined to bend their knees rather than extend their hips in order to carry out the instruction.
Asseman, F. Caron, O. & Crémieux, J. (2008). Are There Specific Conditions for Which Expertise in Gymnastics Could Have an Effect on Postural Control and Performance?. Gait and Posture, 27(1),76–81. doi:10.1016/j.gaitpost.2007.01.004 DOI: https://doi.org/10.1016/j.gaitpost.2007.01.004
Brown, S. Brughelli, M. & Hume, P. (2014). Knee Mechanics During Planned and Unplanned Sidestepping: A Systematic Review and Meta-Analysis. Sports Medicine 44(11),73–88. doi:10.1007/s40279-014-0225-3 DOI: https://doi.org/10.1007/s40279-014-0225-3
Caine, D. Russel, K. & Lim, L. (2013). Handbook of Sport Medicine and Science Gymnastics. Oxford, UK: Wiley-Blackwell. DOI: https://doi.org/10.1002/9781118357538
Donskoi, D. & Zatsiorski, V. (1988). Biomecánica Con Fundamentos de La Técnica Deportiva. Habana, Cuba: Pueblo y Educación.
Hraski, Z. (2002). Correlation Between Selected Kinematic Parameters and Angular Momentum in Backward Somersault, ISBS 67–70. Retrived from https://ojs.ub.uni-konstanz.de/cpa/article/view/670.
King, M. & Yeadon, M. (2004). Maximising Somersault Rotation in Tumbling. Journal of Biomechanics. 37(4),71–77. doi:10.1016/j.jbiomech.2003.09.008 DOI: https://doi.org/10.1016/j.jbiomech.2003.09.008
Król, H. Klyszcz-Morciniec, M . Sobota, G & Nowak, K. (2016). The Complex Analysis of Movement in the Evaluation of the Backward Somersault Performance. Physical Activity Review. 4, 28–39.doi:10.16926/par.2016.04.04 DOI: https://doi.org/10.16926/par.2016.04.04
Mikl, J. (2018). Joint Moments Required to Hold a Posture While Somersaulting. Human Movement Science. 57, 158–170. Retrived from https://doi.org/10.1016/j.humov.2017.12.001. DOI: https://doi.org/10.1016/j.humov.2017.12.001
Mkaouer, B. Monem, J. Amara, S. Chaabèn, H & Tabka, Z. (2012). Kinematic and Kinetic Analysis of Counter Movement Jump versus Two Different Types of Standing Back Somersault. Science of Gymnastics Journal. 4(3), 61–71.
Mkaouer, B. Monem, J. Amara, S. Chaabèn, H & Tabka, Z. (2013). Kinematic and Kinetic Analysis of Two Gymnastics Acrobatic Series to Performing the Backward Stretched Somersault. Journal of Human Kinetics. 37(1), 17–26. doi: 10.2478/hukin-2013-0021. DOI: https://doi.org/10.2478/hukin-2013-0021
Sadowski, J. Boloban, V. Wiśniowski, W. Mastalerz, A. & Niźnikowski, T. (2005). Key Components of Acrobatic Jump. Biology of Sport. 22(4), 385–395. Retrived from https://www.researchgate.net/publication/259976398_Key_components_of_acrobatic_jump
Sadowski, J. Boloban, Mastalerz, A. & Niźnikowski, T. (2009) Velocities and joint angles during double backward stretched salto performed with stable landing and in combination with tempo salto. Biology of Sport. 26 (1),87-101. doi:10.5604/20831862.890245 DOI: https://doi.org/10.5604/20831862.890245