Pinto Roberta R, Polito Marcos D
Research Group of Cardiovascular Response and Exercise, Londrina State University, Londrina, PR, Brazil.
Clin Physiol Funct Imaging. 2016 Sep;36(5):407-13. doi: 10.1111/cpf.12245. Epub 2015 Jun 19.
This study aimed to compare haemodynamic responses during resistance exercise with blood flow restriction (BFR) in hypertensive women.
Twelve hypertensive women undertook three random experimental sessions in the leg-press exercise: (i) Three sets, eight repetitions, 20% of one-repetition maximum (1 RM), with BFR; (ii) Three sets, 15 repetitions, 65% of 1 RM, without BFR; and (iii) three sets, 15 repetitions, 20% of 1 RM, without BFR. The BFR was performed using two sphygmomanometers adjusted to fit both thighs. Systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR), stroke volume (SV), cardiac output (CO) and systemic vascular resistance (SVR) were measured on a beat-to-beat continuous basis.
When compared to the 20% without BFR, the session with BFR presented increased values in all sets for the variables SBP, DBP, CO and SVR, and in the 2nd and 3rd sets for HR. The session with BFR also presented increased values compared to the 65% of 1 RM in the 2nd and 3rd sets for the variables SBP, DBP and HR and in all sets for the variables CO and SVR.
Low-intensity resistance exercise with BFR can initiate higher haemodynamic and cardiovascular values than traditional high-intensity resistance exercises in hypertensive women.
本研究旨在比较高血压女性在进行血流限制（BFR）抗阻运动时的血流动力学反应。
12名高血压女性在腿部推举运动中进行了三个随机实验环节：（i）三组，每组8次重复，为1次重复最大值（1RM）的20%，施加BFR；（ii）三组，每组15次重复，为1RM的65%，不施加BFR；（iii）三组，每组15次重复，为1RM的20%，不施加BFR。使用两个经调整以贴合双侧大腿的血压计进行BFR。逐搏连续测量收缩压（SBP）、舒张压（DBP）、心率（HR）、每搏输出量（SV）、心输出量（CO）和全身血管阻力（SVR）。
与不施加BFR的20%强度组相比，施加BFR的环节中，SBP、DBP、CO和SVR这些变量在所有组的值均升高，HR在第2组和第3组的值升高。与1RM的65%强度组相比，施加BFR的环节中，SBP、DBP和HR这些变量在第2组和第3组的值升高，CO和SVR这些变量在所有组的值升高。
在高血压女性中，与传统的高强度抗阻运动相比，施加BFR的低强度抗阻运动可引发更高的血流动力学和心血管数值。
