| Long jump belongs to the sports of fast strength which is dominated by physical ability.The performance of long jump mainly depends on the approach speed and fast take-off ability,which is closely related to the explosive force and fast take-off strength of lower limbs.Junior two girls are in the stage of basic long jump training.Their main training task is to focus on the development of speed and fast strength quality,and the development of fast jump ability.Therefore,the research methods used in this study mainly include: literature,expert interview,questionnaire survey,experiment and mathematical statistics.60 girls in two physical education classes of grade two in Shangdi school attached to Tsinghua University were randomly divided into experimental group and control group.In the experimental group,deep jump exercises were added in the preparation part of the class,while in the control group,there was no change in the preparation part of the class.The purpose of this paper is to explore the effect of deep jump combination exercise on long jump performance through teaching experiments,and to analyze the internal relationship between deep jump combination exercise and long jump specific indicators and performance,so as to provide theoretical basis for the future long jump teaching and training methods.After 12 weeks of teaching experiment,the results and special indexes of the long jump in the experimental group and the control group were tested respectively,and the following conclusions were drawn from the analysis of the test data:1.After 12 weeks of experiment,the combination of traditional strength exercise and jump depth exercise with a height of 20 cm had a positive effect on improving the performance of 30 meter sprint,standing long jump,in-situ vertical jump and one foot vertical jump of run-up girls.2.After 12 weeks of experimental time,the experimental group of 20 cm deep jump combined practice had a very significant difference in the training effect of in-situ vertical jump touch height in the second year of junior high school,and there was a significant difference in the training effect of standing long jump and run-up single foot vertical jump touch height,and there was no significant difference in the training effect of 30 m sprint;while the control group of traditional strength exercise was 30 m in the second year of junior high school There was no significant difference in training effect among sprint,standing long jump,standing vertical jump and approach singlefoot vertical jump.It shows that the deep jump combination practice is more conducive to the development of the lower limb explosive force and rapid take-off force than the traditional strength exercise.3.After the experiment,the comparative analysis of the long jump results between the experimental group and the control group shows that: compared with the control group of the traditional strength exercise,the experimental group of the combination of the deep jump with the height of 20 cm has a highly significant difference in improving the long jump results of the girls in the second year of junior high school.That is to say,the teaching effect and achievement of long jump will be better than that of traditional strength practice by using deep jump combination exercise in the course of long jump in junior middle school.4.Using new and effective deep jump exercises in junior high school physical education can reduce the limitations of traditional training teaching,give full play to the advantages of deep jump exercises,stimulate students' interest and freshness,encourage students to actively participate in physical education teaching,and also help to prepare for the excited state of deep jump combination exercises,so as to provide the quantity and quality of exercises Guarantee. |
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