Abstract
This was a case study about serve training and the effectiveness for a collegiate female tennis player. She is 175cm in height and recognizes her serve is strong point in her play. She also wants to improve her serve in this training. Coaches also evaluates her serve as strong point, and they try to improve her serve. The goal of this training was to improve speed of 1st serve and spin rate of 2nd serve. The training period was approximately five months. The contents of training were 1) to improve swing speed, 2) to adjust the swing direction to improve spin rate, 3) to adjust the impact angle to improve spin rate, and so on. Trackman was used for the serve tests. We analyzed speed, spin rate, impact height and impact depth. As a results, the speed of 1st serve became faster, and 2nd serve became slower after the training. The spin rate of 2nd serve tended to be large at the post test. Impact height was significantly low after the training. The change of impact height was contributed to the speed of 1st serve. The adjustments of technical issues were contributed to the spin rate of 2nd serve.
