[Retracted] Remote Evaluation System of Tennis Batting Action Standard Based on Acceleration Sensor

Table 2

The remote evaluation results of the tennis stroke of the five tennis trainees.

Tennis cadet no.	Hit number	Evaluation score	Assessment level
a	First time	62.53	General
	Second time	58.77	Bad
	Third time	68.79	General
	Fourth time	79.12	General
b	First time	81.56	Good
	Second time	76.45	General
	Third time	80.93	Good
	Fourth time	83.21	Good
c	First time	50.13	Bad
	Second time	48.95	Bad
	Third time	44.79	Bad
	Fourth time	62.35	General
d	First time	83.44	Good
	Second time	54.13	Bad
	Third time	70.68	General
	Fourth time	78.21	General
e	First time	38.95	Poor
	Second time	61.25	General
	Third time	55.15	Bad
	Fourth time	66.11	General