Acute responses of training resisted in hemodynamic variables in university standards
Abstract
The study aimed to analyze the acute responses of resistance training in hemodynamic variables in normotensive university students. Seven normotensive university students participated, with a mean of 21.4 ± 2.2 years. The participants performed load tests on the leg-press apparatus 45º for the accomplishment of 10RM, for protocol B10, and 20 RM, for protocol B20. The B10 protocol (moderate intensity) was performed with 3 sets of 10 replicates, and B20 (light intensity), with 3 sets of 20 replicates. In all protocols, 80% of the load found in the test was used, with a 2-minute interval between sets. After the protocols were completed, the participants remained for 60 minutes at rest to check for post-exercise hypotension (BPH), with blood pressure (BP) measured at 10-minute intervals. In the 2 protocols, there was an increase in BP in successive series, but B20 presented a higher peak systolic BP (184.2 ± 28.0 vs.177.1 ± 24.8), but with no significant difference. B20 resulted in a significantly higher response in heart rate (166.5 ± 25.5 vs. 142.2 ± 30.5) and double-product (30,660 ± 6,364 vs. 25,052 ± 5,789). The two protocols presented PEH at 30 minutes, but B20 presented a significant and more pronounced result in systolic BP hypotension. Therefore, it was concluded that, for hemodynamic responses during exercise, the protocol with lower intensity resulted in higher SBP, HR and DP peaks. Regarding the post-exercise hypotensive effect, it was concluded that the protocol with lower intensity resulted in a greater effect of HPE.
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