Neto Gabriel R, Sousa Maria S C, Costa e Silva Gabriel V, Gil Ana L S, Salles Belmiro F, Novaes Jefferson S
Physical Education Graduate Program, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
Kinanthropometry and Human Development Laboratory - UFPB, João Pessoa, Paraíba, Brazil.
Clin Physiol Funct Imaging. 2016 Jan;36(1):53-9. doi: 10.1111/cpf.12193. Epub 2014 Sep 26.
The aim of this study was to compare the acute effect of resistance exercise (RE) with and without blood flow restriction (BFR) on heart rate (HR), double product (DP), oxygen saturation (SpO2 ) and rating of perceived exertion (RPE). Twenty-four men (21·79 ± 3·21 years) performed three experimental protocols in a random order (crossover): (i) high-intensity RE at 80% of 1RM (HI), (ii) low-intensity RE at 20% of 1RM (LI) and (iii) low-intensity RE at 20% of 1RM combined with partial blood flow restriction (LI+BFR). HR, blood pressure, SpO2 and RPE were assessed. The data were analysed using repeated measures analysis of variance and the Wilcoxon test for RPE. The results indicated that all protocols significantly increased HR, both immediately postexercise and during the subsequent 60 min (P<0·05), and postexercise DP (P<0·05), but there were no differences between protocols. The protocols of LI and LI+BFR reduced postexercise SpO2 (P = 0·033, P = 0·007), and the LI+BFR protocol presented a perception of greater exertion in the lower limbs compared with HI (P = 0·022). We conclude that RE performed at low intensity combined with BFR seems to reduce the SpO2 after exercise and increase HR and DP while maintaining a perception of greater exertion on the lower limbs.
本研究旨在比较有无血流限制（BFR）的抗阻运动（RE）对心率（HR）、双乘积（DP）、血氧饱和度（SpO2）和自觉用力程度（RPE）的急性影响。24名男性（21.79±3.21岁）以随机顺序（交叉）进行了三种实验方案：（i）1RM的80%的高强度抗阻运动（HI），（ii）1RM的20%的低强度抗阻运动（LI），以及（iii）1RM的20%的低强度抗阻运动结合部分血流限制（LI+BFR）。评估了HR、血压、SpO2和RPE。使用重复测量方差分析和RPE的Wilcoxon检验对数据进行分析。结果表明，所有方案在运动后即刻和随后60分钟内均显著提高了HR（P<0.05），以及运动后DP（P<0.05），但各方案之间无差异。LI和LI+BFR方案降低了运动后的SpO2（P = 0.033，P = 0.007），并且与HI相比，LI+BFR方案在下肢表现出更大的用力感（P = 0.022）。我们得出结论，低强度结合BFR进行的抗阻运动似乎会降低运动后的SpO2，增加HR和DP，同时在下肢保持更大的用力感。
