An Experimental Study On The Effect Of Multi-directional Speed Training On The Lower Limb Mobility Of 11-12 Year Old Male Soccer Players

Research aim: With the continuous development of soccer in China,it has led to a diversification of soccer training methods nowadays.As a branch of functional body training,multi-directional movement training has been widely used in various sports abroad.Previous studies have focused on the application of training tools for multi-directional movement training.The exploration of training tools for the application of multi-directional movement training for soccer events is lacking.In the face of the diversity of training tools,how to improve the lower limb mobility of youth soccer players has been an important issue for practitioners to consider.Research method: This study was conducted using the following research methods: literature review,expert interview,experimental method,mathematical and statistical method,and logical analysis.Twenty-six adolescent male soccer players in the 09 age group of 9 at Shijiazhuang Amateur Sports School were used as the experimental subjects and were randomly divided into an experimental group and a control group of 13 each.The experimental group took a three-times-a-week multi-directional movement training intervention,while the control group took a three-times-a-week traditional speed and agility training intervention.The intervention training was arranged after the preparation activity,and the intervention duration was 25-30 minutes.The experimental test indexes were the 20 m run,the Nebraska run,the T-shaped agility test,the Illinois run,the AFL agility test(with ball),the cross change of direction run(with ball)and the 5m 3-way test.SPSS 25.0 was used to perform independent samples t-tests and paired samples t-tests,and P 0.05 was considered statistically significant.The experimental results of the multi-directional movement training method were compared and analyzed with the traditional speed and agility training methods in order to develop a training framework for 11–12-year-old youth soccer players.Findings:(1)There was no significant difference in the test data of various indicators between the experimental and control groups before the experiment.There was a significant improvement in the test data of the Nebraska Run,T-Shape Agility Test,Illinois Run,and AFL Agility Test(with ball)in the pre-and post-experimental groups(p<0.01)and Cross Change Run(with ball)(p<0.05).There was an improvement in the 20 m run test data between the pre-experimental and post-experimental control groups(P < 0.05).There was a significant improvement in the 20 m run,Nebraska run,T-shape agility test,Illinois run,AFL agility test(with ball)and cross change of direction run in the experimental group versus the control group after the experiment(P < 0.01).(2)After 8 weeks of intervention training.the experimental group improved by5.58% in the Nebraska Run,4.93% in the T-Shape Agility Test,6.20% in the Illinois Run,6.44% in the AFL Agility Test(with ball)and 5.01% in the Cross Change of Direction Run.The control group improved by 4.89% in the 20 m run and 2.32% in the 5m three-way.(3)After eight weeks of multi-directional movement training,the experimental group’s start/reaction speed index improved from F to A,acceleration ability > 10 m improved from E to C,agility improved from G to B,movement speed improved from D to B,movement rate improved from C to B,endurance improved from H to D,coordination improved from F to C,stability/strength improved from G to C,running technique improved from F to D,race mentality improved from E to D,mental agility from D to B,aggressiveness from C to B,pressure resistance from D to A,passing speed from F to D,reading the game from D to C,tactical execution from E to D and insight from C to B.Conclusions:(1)Traditional speed and agility training has a significant effect on improving the players’ ability to run in a straight line,while multi-directional movement training can greatly improve the players’ ability to accelerate,decelerate,and change direction.(2)Multi-directional movement training is significantly better than traditional speed training in terms of the ability to control body posture when changing body position in space and the ability to remember movement patterns during exercise.(3)Multi-directional movement training has significantly improved the physical and mental attributes of an athlete’s ability to compete compared to traditional training methods.