The Research On The Characteristics Of Velocity Pacing In Middle Distance Running

In order to discuss the pacing strategies displayed by racing event in middle distance running, according to the theory of energy metabolism and central nervous regulation as the foundation to analysis pacing strategy in different sport situation. Firstly, Adopted behavior observation research design in this project, collecting the performance of the IAAF World Championships to ensure the type of velocity pacing in track and field. Secondly, collecting the performance of 800m,1500m from the heptathlon and decathlon to analyze the velocity pace for different purpose and different round. Thirdly, calculated the interval in 800m and 1500m, which used to compare with the position and packing formation in whole course. Finially, following intervention in middle distance running base on single case A-B-A-B design to discuss the variation of velocity pacing, stride rate and stride length. The conclusion is as follows:(1)Distance is a strategy factor, the regulation of initial velocity and peak velocity is the strategic choice which based on racing distance. Velocity pace of the whole course based on the initial velocity and peak velocity is shown for the three choices, including a faster start, even start and slower start. The different distance in the events of track and field has indicated the special characteristic of velocity pacing which included three basic model.(2) 800m and 1500m with special velocity pacing characteristics.800m have shown three phases including fast start phase, low speed phase and acceleration in the second half, which is parabolic-shaped pacing just like reverse "]". It showed similar tendency in 1500m’s velocity pacing, including fast start phase, low speed phase, acceleration phase and peak velocity phase, which is parabolic-shaped pacing just like "J" that was rapid at first, slow down and acceleration in the second half, peak velocity in finial phase. Purpose have less effect on the velocity pacing of 800m, but have a significant effect on 1500m, which has control to smooth pacing of the middle phase. Round has influence on the pacing of 800m and 1500m, which are selection of initial pace.(3) The package formation is a special phenomenon in race events without course rope. There is a package formation of race events without course rope that shows the stage characteristics of starting pack, departure pack, following pack. The position is a key decision in the race. Athletes who aim to top three are showing the strategic behavior includes occupy an advantaged position, mass following in the start phase, interactive following in the middle phase and spurt in the end. Following strategy is main decision-making to acquire champion, which is cored with following pack velocity in competition.(4) Pack formation has influenced the position from the start without course rope in 1500m, which have characteristics of initial package velocity.(5) The following intervention can effectively control the velocity pacing of athlete with inaccurate ability in sensing and control of speed. The speed stability and step length coordinates in following intervention.