This study aims to determine the effect of BOTELI interval training on the groundstroke forehand rally skills of tennis. This research was conducted on the tennis court of the Faculty of Sports Science, Sebelas Maret University, Surakarta. The research method uses experiments. The sample in this study was 24 students of the Faculty of Sports Science, Sebelas Maret University, Surakarta, for the 2021/2022 academic year. The training method in this study uses BOTELI exercises with 1:1 and 1:3 intervals. The measuring instrument is the kemp-vincent rally tennis skill test. The data analysis technique was Paired T-Test at a significance level of = 0.05 using SPSS version 20 software. The results showed that BOTELI interval training could improve forehand groundstroke rally skills in tennis. However, there are differences between the 1:1 interval BOTELI training method with the 1:3 interval BOTELI training method in enhancing the groundstroke rally forehand skills of tennis. For students with a BOTELI interval of 1: 1, the results are better than 1:3 with an average value (1:1 = 63.58 and 1:3 = 48.42). In this study, it was found that the advantages of BOTELI interval training with a dose of 300 strokes per training session and every 20 strokes there is an interval lag, so after making several 1800 strokes, students can play tennis simply. The benefits of using BOTELI tools in doing groundstroke forehand rally techniques are efficiency and function. Efficient in terms of cost, time and number of balls used, its function will result in mastery of the forehand groundstroke rally technique quickly because, in terms of similarities, the training using BOTELI is very similar to the general groundstroke forehand rally exercise, even more, flexible and adaptive. The use of BOTELI aids also functions for implementing exercise programs such as exercise frequency and training intervals will be more easily fulfilled or achieved. This BOTELI tool can be useful for doing groundstroke forehand rally exercises easily, cheaply, and comfortably and can be done independently.

No abstract