The Effect of Interval Training and Fartlek Exercises on Increasing VO2 Max in Cadets Aged 15–17 at SMK Mitra Sehat Mandiri Sidoarjo

Faza Abid Elhaliqie (Universitas PGRI Adi Buana Surabaya)
Muhammad Wahyono (Universitas PGRI Adi Buana Surabaya)
Ramadhani Hananto (Universitas PGRI Adi Buana Surabaya)

Al Yazidiy: Jurnal Sosial Humaniora dan Pendidikan
Article in Press

This study aims to determine the effect of interval training and fartlek exercises on improving VO₂max in adolescents aged 15–17 years at Taruna Pelayaran SMK Mitra Sehat Mandiri Sidoarjo. This research employed a quantitative method using a one-group pretest–posttest design. The sample consisted of 27 students who received treatment in the form of an interval training and fartlek exercise program over a specific period. VO₂max was measured using the bleep test before and after the intervention.The results of the data analysis showed a significant increase in the average VO₂max score. Hypothesis testing using a paired sample t-test indicated a significance value of 0.000 (p < 0.05), meaning that there was a significant difference before and after the treatment. Based on these findings, it can be concluded that interval training and fartlek exercises have a significant effect on improving VO₂max in adolescents aged 15–17 years