Dankel Scott J, Jessee Matthew B, Mattocks Kevin T, Buckner Samuel L, Mouser J Grant, Bell Zachary W, Abe Takashi, Loenneke Jeremy P
Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.
Clin Physiol Funct Imaging. 2019 Jan;39(1):29-34. doi: 10.1111/cpf.12535. Epub 2018 Jun 25.
Studies examining perceptual and arterial occlusion responses between blood flow restricted exercise and high load exercise often prescribe an arbitrary number of repetitions, making it difficult for direct comparisons. Therefore, the purpose of this study was to compare these protocols when performed to volitional failure.
Individuals completed four exercise conditions varying in load and pressure: (i) 15% 1RM; no restrictive pressure, (ii) 15% 1RM; 40% arterial occlusion pressure, (iii) 15% 1RM; 80% arterial occlusion pressure, and (iv) 70% 1RM; no pressure. Four sets of knee extension exercises were performed until volitional failure (or until 90 repetitions per set) was completed.
A total of 23 individuals completed the study. While all conditions increased arterial occlusion pressure, the greatest increases (~30%) were observed in the blood flow restriction conditions. All lower load conditions resulted in greater RPE and discomfort than that of the high load condition, but only discomfort was increased further when adding blood flow restriction.
High load exercise will likely be perceived more favourably than lower load exercise to volitional failure; however, those who are incapable or unwilling to lift heavier loads may use blood flow restriction to help reduce the volume needed to reach volitional failure, although this will likely increase discomfort.
研究血流限制运动和高负荷运动之间的知觉及动脉闭塞反应时，通常会规定任意数量的重复次数，这使得直接比较变得困难。因此，本研究的目的是比较这两种方案在进行至自主力竭时的情况。
受试者完成四种负荷和压力不同的运动条件：（i）15%1RM；无限制压力，（ii）15%1RM；40%动脉闭塞压力，（iii）15%1RM；80%动脉闭塞压力，以及（iv）70%1RM；无压力。进行四组膝关节伸展运动，直至完成自主力竭（或每组达到90次重复）。
共有23名受试者完成了该研究。虽然所有条件都增加了动脉闭塞压力，但在血流限制条件下观察到最大的增加（约30%）。所有低负荷条件下的主观用力感觉（RPE）和不适感均高于高负荷条件，但仅在增加血流限制时不适感会进一步增加。
对于自主力竭而言，高负荷运动可能比低负荷运动更易被接受；然而，那些无法或不愿意举起更重负荷的人可能会使用血流限制来帮助减少达到自主力竭所需的运动量，尽管这可能会增加不适感。
