Effects of High-Intensity Interval Training and Moderate-Intensity Continuous Training on Cardiorespiratory Capacity in Adolescents Girls

Abstract

Cardiorespiratory capacity is inversely related to the risk of cardiovascular disease (CVD), and this can be improved through the classical type of continuous physical exercise and interval training with different intensity and duration. This study aims to compare the high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on the cardiorespiratory capacity of physically active adolescent girls. Data were collected from twenty-six participants, divided into two groups of 16±0.5 years for HIIT and 15.7±0.4 years for the MICT. All training sessions were monitored by a qualified trainer using a heart rate monitor (PolarRS800CX GPS), while VO2max was evaluated using the multistage fitness test (MFT) for 6 weeks. The results showed significant differences in the cardiorespiratory capacity (p=0.000) of HIIT and MICT with an increase of 26,7% and 37,6%, respectively. In conclusion, MICT produces higher CRF than HIIT in physically active adolescent girls.