Efeito agudo de diferentes exercícios de alongamento no desempenho de resistência de força

Abstract

Stretching exercises are traditionally used as part of the pre-competition warm-up. However studies that investigated the alterations in the performance of different motor actions due to stretching effects yielded controversial results. The purpose of this study is to verify the acute effect of stretching of the hamstrings and triceps surae muscles on the strength endurance performance, being measured as the maximum number of repetitions (NMR) accomplished in a strength endurance training protocol for the knee flexors. This study also aims to verify the influence of the acute stretching of the knee flexors together and isolated. All the stretching protocols utilized in this experiment resulted in significant increase in the range of motion when compared with its pre test. The NMR in the experimental sessions which included the stretching protocols was significantly smaller when compared to the control sessions which had no stretching protocols. There was no significant difference between the experimental conditions which the hamstrings were stretched isolated or combined with the triceps surae. The results of the present study demonstrate that the flexibility training load utilized was capable of producing a negative effect in the strength endurance performance. Therefore, for motor tasks which the performance is determined by the strength endurance capacity, stretching exercises are not recommended before the activity.