关键词: 撑竿跳高, 技术分析, 时空协同, 技术模式

Abstract: By using the interaction perspective and video analysis, the present study aims to make a comprehensive and systematic investigation into the interactive form and laws of "human" and "pole"in pole vault techniques. The results show that "human" and "pole" exhibit obvious space-time interactive characteristics in world elite woman pole vault athletes' application of action link techniques. At the energy accumulation stage, the interactive characteristics include:the run-up rhythm gradually accelerates when the pole holding angle lowers, pole raising begins at the penultimate step. In terms of pole planting and takeoff action, takeoff starts comparatively earlier. The closer the takeoff point is to the bar, the benter the pole will be at takeoff time, and the bigger the loss of horizontal velocity at takeoff time is. At the energy storage stage, the interactive characteristics include:pole bending degree is almost the same as usual, while the pole bending degree increases during suspension action, the pole bending degree is smaller than usual. The larger the pendulous angle is, the more conducive it is to the swinging speed. At the energy release stage, the interactive characteristics include:(1) when the body tucks, the pole has begun to rebound, the bent pole has regained certain deformation;(2) in addition to the forward rotation of the 'human-pole" system , which takes the planting box as its fulcrum, the "human-pole" system also rotates on the "vertical axis" of pole arch;(3) the larger the body-tucking and leg-lifting angleis, the smaller the stretched deviation angle from the vertical axis is, and it is more conducive to increasing the upward stretching speed and height;(4) the inverted "V" type of bar crossing is commonly used.

Key words: Polevault, Technical Analysis, Space-Time Interaction, Technical Model