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Kinematical Analysis of Swing and Stretch Techniques in Fosbury Flop Stage of Chinese Elite Women High-Jumper

Author: YangZhongFu
Tutor: ZhouJianMei
School: Capital Institute of Physical Education
Course: Physical Education and Training
Keywords: Women's high jump Swing Kicking Three - dimensional kinematic analysis
CLC: G823.1
Type: Master's thesis
Year: 2010
Downloads: 70
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Abstract

The high jump was China's athletics advantages of the project, in the 1970s and 1980s, the peak phase of the development of China's high jump, many elite athletes have left a glorious page in the history of track and field. With the decommissioning of the old group of athletes, high jumpers' in the world high jump on stage to show valiant and heroic scene along with the sharp decline in the jump high level falling, the past two decades the development of China's high jump has been in the doldrums, athletic performance stagnating, how to make the High Jump in China to get rid of this embarrassing dilemma is imminent. By collecting relevant to the study of literature in 1980-2009, in-depth understanding of the operation principle and technical requirements of the high jump, Research-depth understanding of the course of development of the high jump and high jump at home and abroad, and to collect outstanding woman at home and abroad High Jumpers technical indicators, the use of the 3D camera technology, the use of two high-speed cameras October 2008 to participate in the National Track and Field Championships women's high jump top six athletes in Shijiazhuang final field shooting, the use of the United States Ai Lier Motion Video feedback system for analytical analysis jump process swing legs and arms swinging action and support of the take-off leg and kicking movements, according to the theory of the high jump technical principles, sports biomechanics, exercise physiology, and other related academic disciplines, trying to find our athletes in action the gap between the existing problems as well as with foreign elite athletes, make the right diagnosis and to make reasonable comments and suggestions. Provide technical theoretical basis for our active high jumpers, so that they can achieve good results in the game, as well as China's women's high jump movement out of the woods to make some modest force. The results of this study show that: 1 Over the past decade, China and World Women Fosbury Flop Movement and in the development of the low achievement has been stagnant, China's women's high jump results in the Games year results enhance the indications, But with world-class gap is widening. 2 test object has obvious advantages over foreign athletes in height, but H (?) Value was less than the world high jump athletes. Before the start of the take-off, the swing leg support technology is poor, the body center of gravity is too large decline, severe loss of body horizontal velocity of the center of gravity; take off immediately, the body down the vertical velocity is greater than the foreign athletes, the horizontal speed of the conversion rate is low, resulting in smaller maximum vertical velocity of the body center of gravity from the hopping off the ground. 3 run-up penultimate step of the swing leg with an instant, the swing leg knee bending a greater degree of, to the buffer a lesser extent; swinging leg kicking is not positive, not fully reflect the Chinese Athletes the swing legs technology to be further improved. 4 take-off stage, the women's high jump athletes swinging leg showed swing earlier, but swing inadequate features. Swing the direction of the swinging leg forward, upward swing leg should have a smaller swing angle, the size of the swing angle and take off the pedal moment from the ground the size of the vertical velocity of the body center of gravity was a negative correlation (r = -0.466) . 5 Chinese Athletes arms swing slower, swing arm and take-off leg kicking with the rhythm is not good, champion Zheng Xing Juan anomaly second swing arm, swing arm technology and power training should be strengthened. 6 of the women's high jump athletes reflected in the take-off time, short take-off, take-off speed, with the knee and ankle joints of the take-off leg kicking is not sufficient to have a direct relationship kicking strength of insufficient.

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