The Effect of Circuit and Interval Training on Maximum Oxygen Volume (VO2max) in Professional Futsal Athletes

Futsal is one of the most popular sports in society and has attracted more fans all over world. There are than 12 million people spread 100 countries who have played futsal. by goalkeeper four field players with a duration two rounds 2 × 20 minutes. Therefore, every player must good physical condition to play optimally. Maximum oxygen volume (VO2max) an indicator that can be used determine status person's condition. This study aims compare effect circuit interval training on VO2max professional futsal athletes. The method this research quantitative two-group pretest-posttest design. A total 24 teenage boys, aged 16-21 years body mass index (BMI) 19 kg/m2 – 23 participated study. Interval carried out intensity 80% 90% HRmax, frequency 3 times/week for 8 weeks. was measured using 20-M Shuttle Run Test measurements, namely pre-training post-training. results showed average between group (ITG) vs. (CTG) (37.82±2.39 38.56±2.79 mL/kg/min (p ? 0.05)), post-training ITG CTG (39.69±2.51 42.88±2.71 0.001)), delta (1.88±0.99 4.32±1.09 0.001)). Based our results, we show increase VO2max. However, effective increasing compared