Neuromuscular responses to sprints training
Abstract
High-intensity interval training (HIIT) has high relevance in sports physical preparation and has increased in popularity in gyms. In this sense, the present study aimed to evaluate the effect of a Sprint Interval Training (SIT) session on neuromuscular variables. For this, 11 university students, of both sexes, aged between 20 and 32 years old were part of the sample. The students underwent a battery of tests containing a 10m speed test (V10m), horizontal jump (SH) and Medicine Ball throw (AMB), in the PRE, POST and 48h POST SIT session, which was performed through run on flat terrain and consisted of 3 Sprints of 20s in All-out mode for 2min of passive recovery. After the Shapiro-Wilk normality test, the data are presented as mean ± SD. For comparisons between moments, ANOVA for repeated measures with post-hoc Bonferroni was applied. And, for the correlations between the variables, Pearson's coefficient was used. The results showed that SIT negatively affects V10m (F=14.9; η²= 0.59; p= 0.001) immediately after training and that this deleterious effect remains for 48h (p=0.004). The effect on SH (F= 6.3; η²= 0.38; p= 0.007) does not remain after 48h (p=0.99), and only the period immediately after training is affected. Correlations were identified between height and performance in physical tests (r>0.7; p<0.02). Therefore, it is concluded that the SIT, performed in running form, requires longer recovery time for speed in relation to the power of the lower limbs and that the power of the upper limbs is not affected.
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