Effect of 12 weeks of all-out sit on aerobic power and neuromuscular performance in runners
Abstract
The SIT "all-out" method has been used in investigations aimed at contributing to performance in endurance athletes. The objective was to compare the effect of SIT "all-out" on VO2máx and explosive strength in recreational runners with different levels of experience. 49 runners are organized in 3 groups according to the time of running practice, being: G1: beginner to practice; G2: up to one year of practice and G3:> 1 year of practice. The variables aerobic fitness (Shuttle Run Test) and explosive strength of the lower limbs were evaluated by means of two vertical jumping protocols (CMJ and SJ), pre and post 12 weeks of training. The Shapiro-Wilk test was applied. Levene's test was used to test the homogeneity of variances. Subsequently the method of generalized estimation equations followed by Bonferroni's post-hoc was used for comparisons between groups and measure (initial and post-intervention), as well as their interactions. The descriptive model was adopted. The level of significance was set at p <0.05. There was a significant increase in VO2máx indices for all groups. For G1 and G3, there was a higher increase in this variable, compared to G2. Regarding the explosive strength parameters, there was a significant improvement in CMJ only for G2. In SJ, there were no significant differences between groups. The results demonstrated by the SIT "all-out" were effective in the cardiorespiratory adaptation of the beginners and longer time of practicing running.
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