Efeito agudo de um protocolo de potencialização pós-ativação no desempenho de tarefas explosivas na areia

Abstract

The aim of this study was to verify whether the horizontal jump with optimal load induces post-activation potentiation in sprint 15-m and horizontal jump performance, in tests performed in the sand. Participated in this study, 15 handball and beach soccer athletes (19.21 ± 1.82 years; 71.38 ± 9.2 kg; 1.77 ± 0.08 cm). The experimental protocol consisted of two sessions, control (consisting of 5 min of passive rest) and experimental, (6 horizontal jumps with the optimal load as conditioning activity). Both were preceded by a standardized 10 min warm-up (5 min running at 8 km/h and two submaximal sprints) followed by 3 minutes of passive rest. The following statistical tests were used for data analysis: Shapiro-Wilk to verify the normality of the data and ANOVA two-way of repeated measures to analyze the possible differences in the performance of the tests between the control and experimental conditions. The results did not show any significant differences in the sprint 15-m in the pre (2.643 ± 0.90) and post (2.661 ± 0.11) control and pre (2.663 ± 0.94) and post (2.615 ± 0.16) experimental condition; and horizontal jump in the pre (2.23 ± 0.18) and post (2.23 ± 0.19) control and pre (2.18 ± 0.13) and post (2.22 ± 0.18) experimental condition. In addition, no interaction was detected between condition x time (F (1, 14) = 1.688, p = 0.215, ɳp 2 =

0.108), condition (F (1, 14) = 2.023, p = 0.263, ɳp

2 = 0.126) and time (F (1, 14) = 0.938,

p = 0.349, ɳp

2 = 0.063) for both variables analyzed. Based on the results obtained in this study, it is concluded that just one set composed of six horizontal jumps performed with an optimal load was not enough to promote increases in the performance of sprint 15-m and horizontal jump in handball and beach soccer athletes.