Efeitos de 16 semanas do treinamento intervalado de alta intensidade-multimodal em jovens atletas de futebol

Abstract

The purpose of this document was to measure the effects of 16 weeks of highintensity multimodal interval training (HIIT-MM) on anthropometric and physical performance variables of young soccer athletes. Twenty U-17 soccer players were randomized into two groups: HIIT-MM (n = 10; 6 x 1 min: 3 min) and traditional strength training (TRAD; n = 10; ~ 45-60% 1RM) for 16 weeks. Before and after the intervention, measurements of body mass and body fat percentage (% BF) were performed; maximum repetitions (RM) in the bench press, deadlift, and squat; sprint speed of 10 m (S10) and 20 m (S20); squat jump (SJ), countermovement jump (CMJ), lower limb power (LLP), maximum aerobic resistance and maximum oxygen uptake (VO2max). For comparisons between groups and moments, two-way ANOVA was performed. The level of significance adopted was p ≤ 0.05. No changes were found for body mass, %BF, and S20 in both groups. The effect of the moment for on the bench press (p <0.001), deadlift (p <0.001), squat (p <0.001), S10 (p <0.001), CMJ (p <0.001), maximum aerobic resistance (p <0.001) and VO2max (p <0.001). Interactions were found for SJ and LLP, with a statistically significant increase only in the HIIT-MM group (p <0.05). It is concluded that HIIT-MM has practical feasibility similar to TRAD, being efficient to improve strength parameters, in addition to physical performance variables related to cardiorespiratory fitness and LLP of young soccer athletes, which can optimize the work of physical trainers.