The effect of high-intensity interval training on the physical capacity for school-age childrens

The research problem: it is not clear how does high-intensity interval training affect the aerobic capacity of children with normal body weight and of overweight or obese children and whether it is beneficial in improving physical performance. Research aim: determine impact of high intensity interval training for school-age childrens physical capacity. Tasks: 1) to determine and compare the physical capacity of 9th grade students; 2) carry out systematic analysis of articles on HIIT programs that improve students physical capacity; 3) to determine the duration and content of the most effective high-intensity interval training program for overweight students through a systematic analysis of articles; 4) to determine the duration and content of the most effective high-intensity interval training program for students with normal body weight by performing a systematic analysis of articles. Hypothesis: high-intensity interval training improves children’s physical capacity. Methods: 1) systematic analysis; 2) physical capacity testing; 3) anthropometric measurements assessment; 4) mathematical analysis. Results: comparing the experimental and control groups, the results showed that there were no statistically significant differences between them (p> 0.05). The physical capacity of both groups was moderate according to the Eurofit reference scales, but even lower rate was seen in the VO2max results – 41.9 (ml / kg / min). A systematic analysis of the literature has shown that HIIT improves the VO2max rate. The most effective program for overweight (BMI ≥25) children – 12 weeks, and for children with normal body weight (BMI ≤25) – 8 weeks, training at a rate of 80% of the max. HR 3 times a week. Research conclusions: physical capacity of students, according to Eurofit reference scales - average, but worst - aerobic endurance results. Systematic analysis showed that HIIT improves students physical fitness and aerobic endurance. Also, thanks to the systematic analysis, we can conclude that the most effective HIIT training program for overweight or obese children (BMI ≥25) lasts for 12 weeks, 3 times a week, with training of at least 80%. from the maximum heart rate nd for children with normal body weight (BMI ≤25) - 8-week programs, as well as 3 times a week and training with at least 80%. from the maximum heart rate