Neto Gabriel R, Sousa Maria S C, Costa Pablo B, Salles Belmiro F, Novaes Giovanni S, Novaes Jefferson S
1Department of Gymnastics, Physical Education Graduate Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; 2Department of Physical Education, Kinanthropometry and Human Development Laboratory, Federal University of Paraíba, João Pessoa, Brazil; 3Department of Physical Education, Associate Graduate Program in Physical Education UPE/UFPB, João Pessoa, Brazil; 4Exercise Physiology Laboratory, Department of Kinesiology, California State University, Fullerton, California; and 5Department of Physical Education, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.
J Strength Cond Res. 2015 Apr;29(4):1064-70. doi: 10.1519/JSC.0000000000000734.
The effects of low-intensity resistance exercise (RE) combined with blood flow restriction (BFR) on blood pressure (BP) are an important factor to be considered because of the acute responses imposed by training. The aim of this study was to compare the hypotensive effect of RE performed with and without BFR in normotensive young subjects. After 1 repetition maximum (1RM) tests, 24 men (21.79 ± 3.21 years; 1.72 ± 0.06 m; 69.49 ± 9.80 kg) performed the following 4 experimental protocols in a randomized order: (a) high-intensity RE at 80% of 1RM (HI), (b) low-intensity RE at 20% of 1RM (LI), (c) low-intensity RE at 20% of 1RM combined with partial BFR (LI + BFR), and (d) control. Analysis of systolic blood pressure (SBP) and diastolic blood pressure (DBP) was conducted over a 60-minute period. The 3 RE protocols resulted in hypotensive SBP (HI = -3.8%, LI = -3.3%, LI + BFR = -5.5%) responses during the 60 minutes (p ≤ 0.05). The LI + BFR protocol promoted hypotensive (-11.5%) responses in DBP during the 60 minutes (p ≤ 0.05), and both the HI and LI + BFR protocols resulted in mean blood pressure (MBP) hypotension between 30 (-7.0%, -7.7%) and 60 minutes (-3.6%, -8.8%), respectively. In conclusion, postexercise hypotension may occur after all 3 exercise protocols with greater reductions in SBP after HI and LI + BFR, in DBP after LI + BFR, and in MBP after HI and LI + BFR protocols.
由于训练会产生急性反应，低强度抗阻运动（RE）联合血流限制（BFR）对血压（BP）的影响是一个需要考虑的重要因素。本研究的目的是比较血压正常的年轻受试者在有或无BFR情况下进行RE的降压效果。在进行1次重复最大值（1RM）测试后，24名男性（21.79±3.21岁；身高1.72±0.06米；体重69.49±9.80千克）按随机顺序进行以下4种实验方案：（a）80% 1RM的高强度RE（HI），（b）20% 1RM的低强度RE（LI），（c）20% 1RM的低强度RE联合部分BFR（LI + BFR），以及（d）对照组。在60分钟内对收缩压（SBP）和舒张压（DBP）进行分析。在60分钟内，3种RE方案均导致SBP出现降压反应（HI = -3.8%，LI = -3.3%，LI + BFR = -5.5%）（p≤0.05）。LI + BFR方案在60分钟内使DBP出现降压反应（-11.5%）（p≤0.05），HI和LI + BFR方案分别在30分钟（-7.0%，-7.7%）和60分钟（-3.6%，-8.8%）导致平均血压（MBP）降低。总之，所有3种运动方案后都可能出现运动后低血压，HI和LI + BFR方案后SBP降低幅度更大，LI + BFR方案后DBP降低幅度更大，HI和LI + BFR方案后MBP降低幅度更大。
