Protocol A consisted of 6 repetitions with a 6s repetition duration for each repetition, while in Protocol B the subjects performed 12 repetitions with a 3s repetition duration for each repetition. Twenty-two males with previous experience in resistance training performed two training protocols (A and B) with the Smith machine bench press exercise, both with 3 sets, 3 minutes rest, and 60% of one repetition maximum (1RM). The aim of this study was to investigate the impact of protocols equalized by the time under tension (TUT), but composed of different repetition durations and repetitions numbers, on muscle activation and blood lactate concentration. The blood lactate concentration, in maximum repetitions, is affected by the speed of execution.Keywords: resistance training, cadence, blood lactate. The study revealed that rapid velocities (cadence 1010) present a higher concentration of blood lactate when compared to slow runs (cadence 3030). The total work volume was higher with the fast speed (p < 0.05). By comparing the number of repetitions and time under tension of the two runs, all series compared to the first presented significant reductions (p < 0.05). For statistical analysis, the Student-T test was used for an independent sample study and considered the value of probability (p) ≤ 0.05 statistically significant. In the following two sessions, three series with 90 seconds of interval were performed, in the second session slow execution speed (cadence 3030) and later in the third session fast speed (cadence 1010). At the first session, individuals determined loads through the 10-12 RMs test. The volunteers performed three bench press sessions, with an interval of 48 hours between them. Fifteen men (29.1 ± 5.9 years), trained, participated in the experiment.
The aim of this study was to analyze the influence of two velocities of execution relative to blood lactate concentration in strength training exercise until the momentary concentric failure.
0 kommentar(er)
