Effects of High-Intensity Interval Training on running biomechanics: a cohort study uncontrolled design

Efeitos do Treinamento Intervalado de Alta Intensidade na biomecânica da corrida: estudo de coorte com delineamento não controlado

Efectos del Entrenamiento Interválico de Alta Intensidad en la biomecánica de la carrera: estudio de cohorte con diseño no controlado

This study aimed to evaluate the effects of a 4-week HIIT protocol on treadmill training and its impact on running performance. Eleven experienced runners underwent a treadmill test to determine Maximum Aerobic Speed (MAS) for establishing training intensities. Performance was assessed by total time reduction in a 2400-meter track test, and stride variables (frequency and length) were measured using Kinovea. Data were analyzed using Shapiro-Wilk, One-Way ANOVA with Tukey's post hoc, and T-test with Wilcoxon post-test. Significance was set at p < 0.05. Results showed increased stride length and reduced test time post-HIIT, with no change in stride frequency. The HIIT protocol proved effective in improving track test performance.

Keywords:
Biomechanics; Track test; Treadmill; High intensity interval training