Plyometric Training refers to the practice method of muscles that play the maximum strength in the shortest time. Its physiological basis is the use of elastic potential energy and the reflection principle of muscle tissue to increase the activity of the reflection of neurons. Plyometric Training are widely used in training as a strategy for enhancing explosive force. This paper uses the Meta analysis research method to investigate the intervention effect of Plyometric Training (PT) on football players' lower limbs. This study uses Review Manager 5.4 and Stata MP 17 Software to meta-analyze 187 football players from 7 included paper by countermovement jump (CMJ) test, squat jump (SJ) test, 10-meter sprint test, and 30-meter sprint test, and the Cochrane risk bias evaluation tool is used to evaluate the quality of the literature, and the random effect model is used for analysis and heterogeneity testing. The results of the study are: (1) Plyometric Training can effectively increase the height of countermovement jump (MD = 4.27, 95%CI [2.14, 6.41], P <0.05); (2) Plyometric Training can effectively increase the height of squat jump (MD = 3.1, 95%CI [0.78, 5.41], P <0.05); (3) Plyometric Training can effectively reduce the completion time of 10-meter sprint (MD =-0.11, 95%CI [-0.19, -0.03], P <0.05); (4) Plyometric Training can effectively reduce the completion time of 30-meter sprint (MD = -0.37, 95%CI [-0.46, -0.27], P <0.05). This paper found that Plyometric Training can significantly improve the explosive force of football players, including jumping ability and sprint speed. As a training method, Plyometric Training plays an important role in promoting football performance. It is recommended to develop athletes' lower limb sports ability in physical training and sport training to improve the training efficiency of athletes.
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