Excellent 20 Km Race Walking Athletes In The World The Whole Speed Variation Characteristics And Research To Use Tactics

Belong to the dominant class physical endurance project, walking fitness for race walking athletes performance plays a decisive role. With scientific training level enhances unceasingly, the competition among the high level more and more fierce, in order to stand out in competitive footraces, in addition to the requirements must possess high competitive level athletes, the entire velocity distribution, and tactical use of the game, is in line with the characteristics of the project, whether accord with the training level of the athletes themselves, the final result also plays a decisive role.This study using the literature material method, mathematical statistics, comparative analysis, case study method and other research methods, through to the world’s best men’s and women’s 20 kilometers race walking athletes speed variation characteristics and the tactical use of case study, to reflect the changes in the rate of race walking athletes and tactical use of statistical index, standard deviation, speed change size, volatility and correlation coefficient analysis, in order to race walking athletes from which sums up the different level in the game the speed variation characteristics and the regularity of tactical use of all the way, for our coaches guide high level athletes training practice, take part in the competition at home and abroad, and the cultivation of reserve talented person to provide certain theoretical reference.Through the study, the following conclusions:(1) Research shows that the best men’s and women’s 20 km race walking athletes speed change all the characteristics of different performance. Each section average speed standard deviation, speed fluctuation is different; Before, the average speed of second half showing "fast after slow before" and "slow, quick" before two kinds of different speed variation characteristics; Each section there is an obvious correlation between average scores and grade.(2) The research shows that excellent male, female 20 km race walking athletes in the world there is no obvious differences in tactical application. Mainly adopted in the game "follow tactics", "according to their own strength, give priority to with self tactics", "uniform tactics" and "leading tactics", and the top 3, 4- 8 players are mainly adopted the "follow tactics" and "according to their own strength, give priority to with my tactics", 9- 20 athletes mainly adopted the "uniform tactics".(3) Chen Ding and Liu Hong excellent 20 km race walking athletes in the world, in different speed variation characteristics and the tactical application situation are not the same, and fully show the excellent athletes outstanding individual character characteristic.