Experimental Study On The Impact Of French Contrast Group Strength Training Method On The Lower Extremity Power Of Students In Long Jump Events

The main purpose and significance of the study: In recent years,more and more scholars have applied new types of training methods(such as physical functional training,etc.)to various sports or different sports groups in an attempt to explore and dig out more suitable training methods and methods for athlete training.To help Chinese sports athletes achieve better results and better development of sports.The French Contrast Method belongs to a new type of training method in China.There is very little domestic research literature,and there is very little related literature on experimental interventions combined with specific sports.Based on this,this study is to introduce the French comparison group into the practical training and apply it to the long jump project.At the same time,through the 8-week intervention control experiment between the experimental group and the control group,to explore how French contrast method strength training can produce the lower extremity explosive force Compared with the control group(the same kind of strength training method with the same number and load,but different strength training order),which training effect is better? Perform experimental investigations.At the same time,it also provides experimental data for finding training methods,methods,loads,and training sequences suitable for long jump athletes’ French contrast method strength training for lower limb explosive power.It also provides basic theoretical basis for the promotion and practical application of French contrast method training modes;Coaches of a certain project formulate a reasonable training program for explosive power of the lower limbs to provide experimental data and factual references.Main research methods: literature method,experimental methodThis thesis contains two studies: feasibility experiment(pre-experiment)and formal control experiment.Experiment 1: Pre-experiment(without before and after 3weeks): 4 track and field postgraduate postgraduate students conducted French contrast method training interventions in the Sports University Complex and track and field for 3 weeks(twice a week,90 minutes each time).The experimental scheme mainly includes 4 movements(squat,deep jump,weight squat,quadruple frog jump).85% 1RM barbell weight squats 2-3 times-suitable for height jump box once,repeat 4times-30% 1RM barbell weight squats,take off and jump 4 times-one complete four-step frog jump,a whole set of 4 action cycles In four groups,the interval between groups is 5-30 seconds,and the interval between groups is 4 minutes.Observe whether all subjects have adverse reactions during the intervention process,the time taken to complete the four movements after 3 weeks of intervention,the heart rate change index curve,and the 1RM squat weight change to evaluate the power training situation.Experiment 2: Formal experiment(8-week controlled experiment)This study is an 8-week(two times a week,90 minutes)intervention controlled experiment performed on 16 subjects at Shuguang Track and Field in Shanxi Yuncheng University.All experimental students were stochastic divided into two groups: experimental group(N = 8)and control group(N = 8);experimental procedures: recruitment of subjects,screening of subjects,randomization of groups,pre-experiment testing,exercise intervention,and experimental Testing,post-test testing,statistical analysis of test data,etc.The intervention of the experimental group was performed on the basis of the experiment of the first experiment;the movements of the control group were also the same four methods(squat,deep jump,weight squat,four-level frog jump).Barbell weight squats 2-3 times as a group,repeat 4 groups,prepare the next item and the second item after a 4 minute interval: 4 jump boxes suitable for height are once,repeat 4 groups,prepare the next after a 4 minute interval Project,the third project: 30% 1RM barbell weight-bearing half-squat jump 4 times,cycle 4 groups,prepare the next project after a 4 minute interval,the fourth project: a complete four-stage frog jump action.The interval time within the group is 5-30 seconds,and the interval time between groups is 4 minutes.Research result:(1)Research results of experiment 1: After 3 weeks of French contrast strength training,all four subjects showed no adverse reactions to the intervention process.The time taken to complete the four actions and the heart rate change index curve and 1RM depth after 3 weeks of intervention Squat weight changes significantly improved(P <0.05).(2)Results of the second experiment:Through the 8-week intervention control experiment,the main results are as follows:1)On the 1RM value index: compared with the experimental group and the control group,the French contrast method strength training subjects and the control group strength training subjects both increased in the 1RM index,and the increase was significantly different(P <0.05)The increase of 1RM value in the experimental group was higher than that in the control group(P <0.05).2)Explosive power index:Compared with the pre-test of the control group,the post-test of the control group has a significant increase in the 30-meter time running,vertical in-situ touch and high triple jump(P = 0.002,P = 0.000,P = 0.022)while 30-meter timed single-foot jump and standing long jump have improved but there is no significant difference(P =0.468,P = 0.140);and the test group after the test compared with the test before the test,30 meters time running,30 meters The index data such as timed one-foot jump,in-situ vertical jump high,standing triple jump,standing long jump,etc.all improved(P = 0.000,P = 0.006,P = 0.000,P = 0.000,P = 0.000);Comparative analysis of two groups,the 30-meter timed running,30-meter timed single-footed jump,vertical in-situ high touch,and standing long jump are better than the control group in terms of improvement and have significant differences(P = 0.035,P = 0.005,P = 0.049,P =0.004),and they are also better than the control group in standing triple jump,but there is no significant difference(P = 0.258).3)On the special long jump index:Compared with the pre-test of the control group,the post-test of the control group has a significant increase in the data of the long jump index(P = 0.000);and the post-test of the experimental group is also significant compared with the pre-test of the experiment Increase(P = 0.001);compared with the control group with significant difference in the degree of improvement(P = 0.035)Research main conclusions: 1)Strength training in the French comparison group of the experimental group and general strength training in the control group have corresponding training effects on the maximum strength squat value,explosive power index and long jump performance,but the contribution rate to the actual training evaluation index is different.The general strength training method is better than the experimental group in increasing the maximum strength squat value of the subject,so that the subject’s lower limb muscles can withstand a greater load.The French comparison group can significantly improve the lower limb explosive power of long jump athletes,improve the long jump performance,and the improvement effect is significantly better than the general strength intervention methods.2)The strength comparison method of the French comparison group is different from the general strength training method in the training of explosive power of the lower limbs: the general strength training method focuses on the accumulation of training "quantity",and uses repeated training methods to achieve qualitative changes through quantitative changes and improve the lower limbs of the subjects The effect of explosive power;on the contrary,the French comparison group strength training method focuses more on the "qualitative" change in training.The combined training method is used to make the various methods of optimizing the effect of the explosive power training on the subjects effective in a certain order.To achieve the effect of radically changing the subject’s lower extremity power training.3)The experiment proves that the French comparison group can improve the explosive power of lower limbs in a short period of time.It is a high-efficiency,short-time,and effective method for improving the explosive power of lower limbs.It opens up a new way for daily training of lower limb strength and explosive power.new method.Practical applications: 1)In sports,whether it is the completion or maintenance of technical movements,athletes need to generate a lot of power and explosive power per unit time,such as power-lifting,fighting sports or explosive events such as track and field.The French comparison group method can be incorporated into the training plan of the project to have a positive impact on its training results.2)This method is an effective and less time-consuming training method that can increase explosive power.Therefore,athletes in the competition can perform the corresponding French contrast group strength training in the post-match season and the preparation period without seasons or for non-competition students in daily training,so that the strength and explosive power of the lower limbs are sharply enhanced in the following training.3)The effective combination of domestic mixed training or foreign compound and comparative training provided by French contrast method provides new ideas for our training.It is recommended that we be good at discovering and exploring new training theories and methods in ordinary training,and apply them to Go to specific projects.