Kinematic Analysis of Rotating Skills of Elite Women' Hammer Thrower

AUTHORS

Chunlin Lou,Deprtment of Physical Education, Harbin sport University, Herbin 150008,Heilongjiang China. Dept. of Physical Education, Woosuk Univ., 443 Samnye-ro, Samnye-eup, Wanju-gun, Jeollabuk-do, 55338 Republic of Korea
Hyumchoul Cho,Department of Physical Education, Woosuk University, 443 Samnye-ro, Samnye-eup, Wanju-gun, Jeollabuk-do, 55338 Republic of Korea
Yansen Li*,Department of Physical Education, Woosuk University, 443 Samnye-ro, Samnye-eup, Wanju-gun, Jeollabuk-do, 55338 Republic of Korea

ABSTRACT

This study is intended to provide a theoretical basis for improving the performance of Asian female hammer throwers by analyzing and diagnosing their rotational skills, clarifying their kinematic characteristics, and finding the technical gap with the world's best athletes. This experiment utilized three Japanese JVC high-speed cameras and a DLT radiation-type three-dimensional calibration frame to collect technical action images. The cameras are placed in the left, right and back threes a test system come directions of the hammer throwing circle, and the distance from the center of the throwing circle is 12m, the camera lens is 1.2m high, the main optical axis angle is 90°, and the shooting frequency is 120 frames per second. The conclusions obtained through the analysis of the images taken using the APAS program and the DLT technique are as follows. 1) Athletes' one-foot and two-foot support times are getting shorter. 2) The increase in rotational speed and the speed rhythm shows a relatively big difference from the world's top athletes. 3) The trajectory angle of hammer operation showed a big difference compared to the world's best athletes. 4)As the rotation increases, the height of the center of gravity increases at the moment of supporting two feet, and the width of change of the height of the center of gravity at the moment of support of one foot is relatively small.

 

KEYWORDS

Women's hammer throw, Rotation technique, Kinematics

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CITATION

  • APA:
    Lou,C.& Cho,H.& Li*,Y.(2021). Kinematic Analysis of Rotating Skills of Elite Women' Hammer Thrower. Journal of Human-centric Science and Technology Innovation, 1(2), 31-40. 10.21742/JHSTI.2021.1.2.5
  • Harvard:
    Lou,C., Cho,H., Li*,Y.(2021). "Kinematic Analysis of Rotating Skills of Elite Women' Hammer Thrower". Journal of Human-centric Science and Technology Innovation, 1(2), pp.31-40. doi:10.21742/JHSTI.2021.1.2.5
  • IEEE:
    [1] C.Lou, H.Cho, Y.Li*, "Kinematic Analysis of Rotating Skills of Elite Women' Hammer Thrower". Journal of Human-centric Science and Technology Innovation, vol.1, no.2, pp.31-40, Apr. 2021
  • MLA:
    Lou Chunlin, Cho Hyumchoul and Li* Yansen. "Kinematic Analysis of Rotating Skills of Elite Women' Hammer Thrower". Journal of Human-centric Science and Technology Innovation, vol.1, no.2, Apr. 2021, pp.31-40, doi:10.21742/JHSTI.2021.1.2.5

ISSUE INFO

  • Volume 1, No. 2, 2021
  • ISSN(p):0
  • ISSN(e):2653-0007
  • Published:Apr. 2021

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