煙臺市李維賓鐵餅隊運動員旋轉(zhuǎn)動作的特征
[Abstract]:In recent years, the iron-cake-throwing team led by the coach of the Yantai city, Li Weibin, has achieved excellent performance in the national competition. By means of the literature, the field shooting, the mathematical statistics and the comparative analysis, the paper analyzes the rotating technology of Feng Bin, the discus athlete, and finds the characteristic of its technical action, so as to realize the rotation technology more comprehensively and objectively. And through comparison with the excellent athletes in the country, the problem that the technology is further optimized should be found. The results of Feng-bin's research show that (1) the rotation acceleration technology belongs to the post-speed type, and the whole technology time is also different from the world level, and the proportion of the time at different stages of rotation reflects the reasonable rhythm of the motion technique. (2) The "man-cake" system shows a good acceleration tendency during the first two stages of the rotation process, and the speed change curve exhibits a downward trend due to the complexity and difficulty of the overall variation of the "man-cake" system in the empty and transitional phases, The transient acceleration and deceleration of the center of gravity did not work with the change of the speed of the discus, resulting in a delay in the acceleration of the discus. And (3) on the basis of high-speed rotation, a good body center-of-gravity displacement distance is achieved, and at the same time, the height of the center of gravity of the body is not changed greatly, and the movement of the body is ensured. And (4) the torsion angle formed by the shoulder shaft and the hip shaft and the pull angle data formed by the throwing arm and the shoulder shaft are reflected in different technical links, so that the good control state of the body and the device is reflected. Through the analysis of Feng Bin's rotating technology, it can be seen that the characteristics of the rotating action of the athletes of the Li Weibin are helpful to the other athletes to analyze and diagnose their own technology comprehensively according to their technical style, so as to achieve the purpose of raising the technical level.
【學位授予單位】:山東師范大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:G824.2
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