The Acute Effect of High-Intensity Functional Exercises on Circadian Rhythm and Anaerobic Performance Parameters

Kickboxing is a sport that involves high intensity and short intervals. High intensity functional training can contribute to training kickboxers specific to the competition. The purpose of this study is to examine the acute effect of high-intensity functional exercises on circadian rhythm and anaerobic performance parameters. The study consisted of 15 volunteer male kickboxers (age, 20.67± 1.23 years; height, 173.60± 3.18 cm; 69, 20±2.67 kg; BMI 23.03±.49) between the ages of 18-25. The research protocol consisted of multimodal HIFT exercises performed at different times of the day. After HIFT protocol; T-line agility, vertical jump, average and peak power data were obtained from the volunteers at different times of day (09.00 am; 01.00 pm; 05.00 pm). There was find statistically significant difference between vertical jump [F(1,145)= 129.54 p=.000, partial eta square:,902], peak power values [F(1,275)= 122.89 p=.000, partial eta square:,898], average power values [F(1,139)= 124.23 p=.000, partial eta square:,899], T- line agility times [F(1,925)= 39,227 p=.000, partial eta square:,737] after HIFT in the morning, afternoon and evening protocols (p< 0.05). The best scores were obtained in the evening (05.00 pm) values for all parameters. It was determined that HIFT had better effect on vertical jump, average power, peak power and T-line agility in the evening than morning and afternoon hours.