PENGARUH VARIASI LATIHAN DAYA TAHAN KARDIOVASKULAR TERHADAP PENINGKATAN VO2MAX PADA PEMAIN USIA 14 TAHUN SSB SEJATI PRATAMA MEDAN TAHUN 2021

The porpuse of this research is to find out how big the influence of  variation cardiovascular training exercise against the increase of  vo2max and how big does influence interval cardovaskular training exercise against the increase of vo2max on player age 14 years old  SSB Sejati Pratama Medan  2021 This research method is an experiment with a research time of 6 weeks, the frequency of exercise is 3 times a week. The number of samples is 12 athletes and the sampling technique used is purposive sampling. All samples of athletes did exercises in the form of exercises that have been arranged in the training program and did a pre-test before entering the training program and post-test after the end of the training program. The results showed that the average (mean) and vo2max of each pre-test data were the lowest 29.90 and the highest 33.60 and the lowest post-test was 33.20 and the highest was 37.10. Then the average (mean) of the pre-test of endurance ability was 32.37, and the post-test was 35.38. Results Based on the research conducted, the hypothesis testing t_(count ) is -34.717. with a value of Sig.(2-tailed) 0.000, <0.05 then Ho is rejected and Ha is accepted. So it can be said that there is a significant effect of the effect of variations on cardiovascular endurance training on increasing vo2max in soccer games for athletes aged 14 years at SSB Sejati Pratama in 2021.