Efeito de protocolos de treinamento com diferentes durações da repetição no número de repetções e tempo sob tensão

Abstract

The duration of repetition is an important variable manipulated in resistance training protocols. However, it is still poorly understood the effect of repetition duration manipulation on training variables and training load components. The aim of this study was to compare the impact of two repetition durations on maximum number (NMR) of repetitions and time under tension (TST). Thirteen male subjects (25.8 ± 4.7 years) with experience in resistance training for at least six months participated in the study. In the session 1, subjects performed tests of one maximum repetition (1RM) in the knee extension exercise. In session 2, training protocols were performed consisting of 3 sets to 60% 1RM, and intervals of 120 seconds between sets. Training protocols had repetition durations of 6s or 3s. The subject should perform as many repetitions as possible until fatigue (interruption of the concentric movement), which allowed recording the NMR and TST in each protocol. It has been found that the protocol 6s provided higher TST, while the protocol 3s led to perform a higher NMR. These results should be taken into account when manipulating the variable duration of the repetition, since the number of repetitions and the duration of training stimulus are reported as interfering factors in muscle adaptations.