[Retracted] Wavelet-Based Multiscale Decomposition Algorithm for Trajectory Capture of Tennis Serves

Table 4

Relative rise height ratio of male athletes in the second step ladder.

First and second shot shoulder and hip strike relative rise height ratio	Wu ×	Chen ×	Liu ×	Bai ×	Average relative altitude rise ratio
First shot shoulder and hip strike relative rise height ratio	0.057	0.066	0.065	0.066	0.0632
Second shot shoulder and hip strike relative rise height ratio	0.07	0.065	0.062	0.067	0.06281