Study On The Running Performance Of Chinese Football Association Super League Players Under Different Competition Systems

Under the influence of COVID-19,the Chinese Football Association(CFA)has changed the format of the CSL from home and away to a conference format for 2020 in consideration of epidemic prevention and control.Therefore,this paper takes the running performance of 3,632 players who participated in 237 games(data missing 3 games)in 30 rounds of CSL in 2019 season and 2,067 players who participated in 160 games in the first and second stages of CSL in 2020 season as the research object.By using literature method,software analysis method and mathematical statistics method,Discuss the influence of different game systems on the running performance of players as a whole,players in positions and players in different periods of time,and whether the running performance of players will be different due to different game systems,different positions(or different periods of time),and whether the two independent factors of game system and position(or time period)will interact.It also tries to find out the running characteristics and differences of Chinese super League players under different formats,in order to seek a wider space for the development of Chinese football,and constantly enrich and improve the research content and theoretical system of the analysis of the running performance of Chinese Super League football matches.The conclusions are as follows:1.From the perspective of players as a whole: For CSL teams,no matter the league adopts the match system or the home-and-away system,they all show similar characteristics in the total running distance,sprint running distance and times,high-intensity running distance and times,and high-speed running times,but for high-speed running distance,the match system is significantly lower than the home-and-away system.2.From the perspective of position players: for the side halfback,the distance and times of sprint running,distance and times of high-intensity running and times of high-speed running in the home and away system are significantly lower than those in the match system,but the total distance of running is significantly higher than that in the match system;For full-backs,the distance and times of sprint running,the distance and times of high intensity running,The Times and distance of high speed running in the home and away system are significantly lower than those in the match system.For strikers,home and away system is significant in The Times of high intensity running and high speed running compared with the match system.For the central defenders,the home and away system is significantly higher than the match system in terms of total running distance,sprint running distance and times,high intensity running distance and times,high speed running distance and times.For the middle halfback,the home and away system is significantly higher in sprint distance and times,high intensity distance and times,high speed distance and times,but significantly lower in total distance.3.The competition system has a significant impact on all indicators of the running performance of CSL players,and all running distances and times of CSL players are reduced under the competition system.Compared with the wingers,the total distance covered by each position is reduced by the centre-backs,full-backs and strikers,and increased by the centre-halves.In terms of distance and frequency of sprints,distance and frequency of high-intensity runs,the number of halfbacks,full-backs and forwards increased,while the number of high-intensity runs of the centre-backs decreased.In terms of distance and frequency of high speed running: more central midfielders and full-backs,less central defenders.A player’s running performance will vary depending on the format and position,and there is an interaction between format and position.4.From different time periods: the total running distance and high-intensity running distance in the first half of the match system are significantly lower than those in the home and away system,and other running indicators have no significant difference.5.The indexes of running performance of CSL players were significantly affected by all time periods,and all running distances and times of CSL players were significantly reduced in the second half;Compared with the match system,the distance and times of sprint running,high-intensity running distance and high-speed running distance are reduced under the match system,which has no effect on running performance in other matches.Time period and competition system have interaction effect on the high intensity running distance,sprint running distance and times,but have no interaction effect on the running performance of other competitions.