Pinto Roberta R, Karabulut Murat, Poton Roberto, Polito Marcos D
Research Group of Cardiovascular Response and Exercise, Londrina State University, Londrina, Paraná, Brazil.
Health and Human Performance, University of Texas Rio Grande Valley, Brownsville, TX, USA.
Clin Physiol Funct Imaging. 2018 Jan;38(1):17-24. doi: 10.1111/cpf.12376. Epub 2016 Jun 10.
This study aimed to compare haemodynamic, rating of perceived exertion and blood lactate responses during resistance exercise with blood flow restriction (BFR) compared with traditional high-intensity resistance exercise in hypertensive older women.
Eighteen hypertensive women (age = 67·0 ± 1·7 years.) undertook three random sessions: (i) three sets; 10 repetitions; 20% of one repetition maximum (1RM) with BFR; (ii) three sets; 10 repetitions; 65% of 1RM; without BFR; and (iii) no-exercise with BFR. The exercise sessions were performed on knee extension equipment.
Systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR), stroke volume (SV) and cardiac output (CO) were significantly higher (P<0·05) in all sets of exercise sessions than the control. No statistically significant differences were detected between exercise sessions. However, SBP, DBP and systemic vascular resistance were higher (P<0·05) and SV and CO were lower (P<0·05) during the rest intervals in the session with BFR. The perceived exertion was significantly higher (P<0·01) in the 1st (4·8 ± 0·4 versus 3·1 ± 0·3), 2nd (7·3 ± 0·4 versus 5·7 ± 0·4) and 3rd sets (8·6 ± 0·5 versus 7·5 ± 0·4) of the traditional high-intensity resistance exercise compared with the exercise with BFR. Blood lactate was higher (P<0·05) in the traditional high-intensity resistance exercise (6·2 ± 0·7 mmol) than in the exercise with BFR (4·5 ± 0·4 mmol).
In comparison with high-intensity resistance exercise, low-intensity resistance exercise with BFR can elicit: (i) same haemodynamic values during exercise; (ii) lower rating of perceived exertion; (iii) lower blood lactate; (iv) higher haemodynamic demand during the rest intervals.
本研究旨在比较高血压老年女性在进行血流限制（BFR）抗阻运动与传统高强度抗阻运动时的血流动力学、自感用力度和血乳酸反应。
18名高血压女性（年龄=67.0±1.7岁）进行了三个随机训练：（i）三组；每组10次重复；使用BFR，负荷为1次重复最大值（1RM）的20%；（ii）三组；每组10次重复；不使用BFR，负荷为1RM的65%；（iii）使用BFR但不进行运动。训练在伸膝设备上进行。
所有训练组的收缩压（SBP）、舒张压（DBP）、心率（HR）、每搏输出量（SV）和心输出量（CO）均显著高于对照组（P<0.05）。各训练组之间未检测到统计学上的显著差异。然而，在使用BFR的训练组的休息间隔期间，SBP、DBP和全身血管阻力较高（P<0.05），而SV和CO较低（P<0.05）。与使用BFR的训练相比，传统高强度抗阻运动的第1组（4.8±0.4对3.1±0.3）、第2组（7.3±0.4对5.7±0.4）和第3组（8.6±0.5对7.5±0.4）的自感用力度显著更高（P<0.01）。传统高强度抗阻运动中的血乳酸（6.2±0.7 mmol）高于使用BFR的训练（4.5±0.4 mmol）（P<0.05）。
与高强度抗阻运动相比，使用BFR的低强度抗阻运动可引发：（i）运动期间相同的血流动力学值；（ii）较低的自感用力度；（iii）较低的血乳酸；（iv）休息间隔期间较高的血流动力学需求。
