It is also important to work on preserving existing performances as well as applied training methods to improve the performance of the athletes. The purpose of this study is to investigate the effect of tennis training on ITN level and hand-foot speed for 8 weeks for young tennis athletes. 18 athletes (9 girls - 9 boys) participated in the study. During our study for 8 weeks , basic tennis hits such as forehand, backhand, volley and service are run regularly and systematically for at least 3 days a week. When the ITN values applied as preliminary and final tests are examined; ITN Fastness Ratings and ITN Fastness Scores (p˂, 000), When the results of the forehand / backhand sensitivity test are examined (p <003), Forehand / backhand depth and forehand / backhand volley test results (p <0.00) and service test results (p <002) we can see that there are many differences between results. But; Hand speed (p <, 232) and foot agility (p <, 923) did not achieve a meaningful result.