Men’s 20 Km Race Walking Athletes Changes In The Rate Of The Whole Research And Tactical Application

Now the men’s 20 km race walking athletes is gradually narrowed, the competitive level of differences between changes in the rate of athletes in the game and tactics to use its influence on the results of the competition is more and more big. So far, by looking up the literature found that walking to the project research, mostly in a revision of the rules, and the improvement of technology and physical ability training, the research of tactics for walking project using less, has not yet formed systematic conclusion. Although the research on tactics have increased in recent years, but relative to the technology and special physical training, tactical research still belongs to a "fuzzy" status. In speed walking tactical aspects of the study, more often focus on the tactical analysis of single tournament, more than for the longitudinal comparison, and the same players in different events in the tactical choice research is less.Papers on 29, 30 games and 2013 world championships in Moscow men’s 20 km race walking athletes(18 athletes before each session of the competition) and 2015 Beijing world championships, 2014 World Cup race walking and 2011 the iaaf race walking challenge some athletes as the research sample, the men’s 20 km race walking athletes speed change and the tactics used as the research object. Through the literature material method, mathematical statistics and comparative analysis, focuses on men’s 20 km race walking athletes entire speed change and the tactical application. Through the study found that:(1) Different groups of men’s 20 km race walking athletes entire speed changes have bigger difference, basic are three types: A group of athletes speed change basic step, namely “(?)”, Changes in the rate of group B athletes basic is parabolic, namely “(?)”; Athletes in group C and group B changes in the rate of athletes is relatively similar, but the decline in the distance is longer, more similar to slide ladder, namely, “(?)”.(2) Through the statistical analysis found that athletes get excellent grades entire speed change for more step “(?)”, and more used in the tactical use follow- continue to accelerate the tactical mode, with powers, ensure that still can accelerate the sprint athletes in the fourth stage.(3) When the velocity changes in the whole process of the athletes and tactical mode basic phase at the same time, the men’s 20 km race walking winning key lies in the fourth stage of the project. Is gradually increasing utilization rate of maximum speed, maximum speed in the fourth phase of the athletes are easier to obtain excellent results.(4) The appropriate speed change trend and tactical model is a process of two aspects, both are interdependent, tactical mode is reflected by changes in the speed, the use of tactics and influence changes in the velocity of the athletes, only a comprehensive look at speed change trend and tactical mode, can we improve the maximum probability of winning.(5) Through the men’s 20 km race walking athletes of different result of the comparison, found that Wang Zhen, Chen Ding and Cai Zelin no too big differences in competitive ability,they are all have ability to won the medal,, grade difference is mainly due to the changes in the rate of the whole game and adopted by the different tactics of entire speed change for “(?)”, the tactics to follow- continue to accelerate, more conducive to athletes get good grades.