当前, 我国教练员在平时训练中越来越重视运动员素质训练中的核心训练，并

At present, coaches in our country pay more and more attention to the core training of athletes' quality training in their usual training, and are applying more and more Swiss ball training methods. After training, their core strength, center of gravity stability, and maintaining body balance and coordination are all Played a positive role. Through experimental analysis, this article adds Swiss ball training to traditional training, thus enriching the methods and means of traditional core training. Core strength is an indirect influence on the performance of sprinters. This study mainly used experimental methods, mathematical statistics, and logical analysis to perform 4 tests on 20 students in grades 5-6 of Santiao Primary School in Anwai, including 50-meter run, run-up touch, standing long jump, and one-minute sit-ups. <br>After training and observation, joining the Swiss ball training has a significant impact on the pupils’ 50-meter run results, and draws the following conclusion: Although the training after joining the Swiss ball has a certain degree of difficulty, it also increases the challenge and interest, and improves The enthusiasm and initiative of the experimenter training. The Swiss ball is always in an unstable state during the training process. After joining the training, the core strength can be improved and the force transmission can be better. The experiment proved that after joining the Swiss ball training, the experimental group's scores have been greatly improved, which can prove that the 50 meters in the elementary school quality evaluation can promote the effect. <br>Keywords: Swiss ball, core stability, elementary school, 50m speed

At present, our coaches pay more and more attention to the core training of athletes' quality training in peacetime training, and apply more and more to the Swiss ball training method, and after training, the core strength, center of gravity stability, maintaining body balance and coordination have played a positive role. Through experimental analysis, the Swiss ball training is added to the traditional training, thus enriching the traditional core training methods and means. The core strength is the indirect influence on the performance of sprinters. This study mainly used experimental method, statistical method, logical analysis method, three primary schools outside the 5-6 grade 20 students carried out 50 meters running, running touch high, standing long jump and one minute sitting up 4 tests.<br>After training observation to join the Swiss ball training has a significant impact on the performance of primary school students in the 50 meters run, and came to the following conclusions: after joining the Swiss ball training, although it has a certain degree of difficulty, but also increased the challenge and fun, improve the enthusiasm and initiative of the experimenter training. Swiss ball training process is always in an unstable state, after joining the training can improve the core strength, can be better conduction of force conduction. Experiments show that the achievements of the experimental group after joining the Swiss ball training have been greatly improved, which can prove that the 50 meters in the quality assessment of primary schools has a promotion effect. <br>Keywords: Swiss ball, core stability, primary school, 50 meters speed

At present, Swiss coaches pay more and more attention to the balance and core strength training. In this paper, through experimental analysis, the Swiss ball training is added to the traditional training, thus enriching the traditional core training methods and means. The core strength has an indirect influence on the performance of sprinters. This study mainly uses the methods of experiment, mathematical statistics and logical analysis to test 20 students of Grade 5-6 in santiao Primary School of Anwai in four aspects: 50 meter running, run-up and touch height, standing long jump and one minute sit ups.<br>After training observation, after joining the Swiss ball training, it has a significant impact on the performance of primary school students' 50 meter running, and draws the following conclusion: Although the training after joining the Swiss ball has a certain degree of difficulty, it also increases the challenge and interest, and improves the enthusiasm and initiative of the experimenters. Swiss ball training process is always in an unstable state, after joining the training can improve the core strength, can better conduct the power transmission. Through the experiment, it is proved that after joining the Swiss ball training, the scores of the experimental group are greatly improved, which can further prove that it can promote the 50 meters in the quality evaluation of primary schools.<br>Key words: Swiss ball, core stability, primary school, 50m speed<br>