plyometrics

Whereas most exercises are designed to build up strength or endurance plyometrics focuses on increasing power--the rate at which an athlete can expend energy.

虽然绝大多数的训练用来量或者持久性，增强式训...

In order to develop the explosive strength of athlete on receiving ball,this essay applied the plyometrics training method in tennis return of service teaching through educational experiment.

通过教学实验,把超等长训练法应用网球的接发球教学,运用数理统计法对实验数据进行分析。