Physiological responses to HIIT Enhancing aerobic capacity alongside anaerobic power
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This study was accomplished to find out the effects of HIIT on both anaerobic and aerobic capacities separately. Method: Twenty-four healthy individuals between the ages of 18 and 25 participated voluntarily in this study. The volunteers took part in the study were split into two distinct groups as control group (n = 14) and experimental group (n = 10). A HIIT program, comprised of a single 90-minute session, three days a week was applied to the experimental group for a time period of 8 weeks. The control group, on the other hand, had no exercise intervention and they were instructed to pursue their daily life activities. Before exercises and after training program, the levels of height, body weight, body fat percentage, VO2max, ventilatory threshold, respiratory compensation point, and anaerobic power of both groups were detected as required. Results: After relevant training program, a significant increase was observed in the experimental group in terms of the levels of maximum power (w/kg) and average power (w/kg) from Wingate anaerobic testing (p < .05). In addition, a significant increase was also observed in VO2max (ml/kg/min) and respiratory compensation point VO2 (ml/kg/min) values (p < .05). Conclusion: The results obtained hereby indicate that the practices of HIIT are effective particularly on anaerobic performance, but they also increase the aerobic performance. Employing the high-intensity interval training may be, therefore, beneficial for the athletes who do not have adequate training time as well as for the athletes who desire to reduce the duration and scope of training without experiencing any loss in VO2max and performance levels during the pre-competition period. Furthermore, due to its favourable effects on cardiovascular health resulted from the increases in VO2max, the high-intensity interval training also can be used in exercises of sedentary individuals, paying particular attention to the principles of loading.
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