## 4 Discussion
Similar to adults, continuous and high-intensity interval training in children also resulted in significant increases in VO2 max values compared to the control group [56]. Both studies seem to have similar results to ours. In another study by [PERSON] et al. [57], they randomly selected twenty women and divided them into two groups. The long-term HIIT group trained at 90% of their maximal heart rate for 1 min out of 15 min. The short-term HIIT group, on the other hand, trained at 90% of their maximal heart rate for 20 s out of 45 s, followed by 10 s of active rest at 60% of their maximal heart rate for six weeks. In both exercise groups, there was a decrease in the perceived exertion after the training compared to before, and both groups experienced an increase in maximal oxygen consumption (VO2 max), which is the case with our findings. Another study compared 100 m and 200 m interval training in 12 male and female swimmers aged 14-16; it was found that in both interval methods with different distances, variables such as RPE (rating of perceived exertion), Peak-VO2 (mL.kg\({}^{-1}\cdot\)min\({}^{-1}\)), and velocity (m/s) were similar. In a study examining the relationship between repeated sprint training and anaerobic aerobic fitness [58], it was observed that 12 \(\times\) 20 repeated sprint training sessions resulted in the highest values for lactate, heart rate, and fatigue scores. As a result,there was a significant difference (\(p<0.005\)) in the anthropometric measurement averages between the swimming training groups' pre- and post-test measurements, while there was no significant difference (\(p>0.005\)) in the averages of weight (Kg), BMI (Kg/m\({}^{2}\)), and fat (%) between the groups' pre- and post-test measurements. These results may encourage using HIIT, which is a time-efficient and well-used method, and its derivatives instead of traditional aerobic training. When the swimming results of the participants in this study, including 50 m, 100 m, 200 m, and 800 m distances, were examined, it was found that there was a temporal improvement in the participants' post-test values at the specified swimming distances. Furthermore, when the results related to the stroke, stroke rate, strokes per length, and stroke length of the swimming training groups were analyzed, it was determined that there was a significant difference between the pre- and post-test measurements in both the within-group and between-group averages (\(p<0.005\)). Additionally, when examining the results of resting HR, BS50m, BS100m, BS200m, and BS800m in the participants in this study, it was observed that there was a significant difference in the within-group averages between the pre- and post-test measurements in the swimming training groups (\(p<0.005\)). However, it was noted that there was no significant difference in the between-group averages for BS100m, BS200m, resting HR, BS50m, and BS800m (\(p>0.005\)). Our hypothesis has indeed proven to be successful, providing compelling evidence that our training approach is effective in enhancing the performance of adolescent swimmers. The results of our study indicate that this high-intensity, lower-volume training regimen not only led to improvements in swim times but also resulted in reduced fatigue and a lower risk of overtraining. These findings are not only promising for the athletes themselves but also hold implications for coaches, trainers, and sports scientists seeking to optimize training programs in various competitive settings. This study was limited due to several conditions, such as the age group of the participants, the sample size of the participants, and their training background. This study was also limited due to a lack of measurement tools, such as underwater VO\({}_{2\text{max}}\) measurement tools and underwater cameras. Measuring VO\({}_{2\text{max}}\) underwater could have given more accurate and appropriate measurements for swimming, and underwater cameras could have been used in the analyses of the stroke techniques of the athletes.