Are there perceptual differences to varying levels of blood flow restriction?
Are there perceptual differences to varying levels of blood flow restriction?
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DOI：
10.1016/j.physbeh.2016.02.022
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发表时间：
2016-04-01
影响因子：
2.9
通讯作者：
Bemben, Michael G.
中科院分区：
文献类型：
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作者：
Loenneke, Jeremy P.;Kim, Daeyeol;Bemben, Michael G.
血流限制（BFR）与低负荷运动的应用已被证明产生有利的肌肉和血管适应。考虑到BFR的潜在临床效用，重要的是表征各种相对压力下的感知用力（RPE）和不适的评级，因为个体的感知反应可能最终决定参与者是否继续这种锻炼方式。14名参与者完成了3天的锻炼。条件包括单侧肘关节屈曲，6个压力范围为40%至90%动脉闭塞，一次重复最大值（1 RM）的30%。RPE的差异（6：在组2（范围13-15）、组3（范围15-16）和组4（范围15 -17）的条件下，发现完全没有用力，20：最大用力）。Bonferroni调整后，无显著性。在第1组（范围为2-3）、第2组（范围为3.2-5）、第3组（范围为4-6.5）和第4组（范围为5-7）的条件下，发现不适感存在差异（0：完全没有不适感; 10：最大不适感）。事后分析仅发现组3内存在差异。虽然目前尚不清楚，如果需要更高的压力，骨骼肌以外的组织的最佳适应，我们的研究结果表明，在运动过程中的感知评级是不太可能是一个限制因素，在较高的压力的应用。(C)2016 Elsevier Inc. All rights reserved.
The application of blood flow restriction (BFR) with low load exercise has been shown to produce favorable muscle and vascular adaptations. Given the potential clinical utility of BFR, it is important to characterize the ratings of perceived exertion (RPE) and discomfort across a variety of relative pressures as the individual's perceptual response may ultimately dictate whether a participant continues with this modality of exercise. Fourteen participants completed 3 days of exercise. Conditions included unilateral elbow flexion with six pressures ranging from 40% to 90% arterial occlusion at 30% of their one repetition maximum (1RM). Differences in RPE (6: no exertion at all, 20: maximal exertion) were found across conditions for set 2 (range of 13-15), 3 (range of 15-16), and 4 (range of 15-17). Following Bonferroni adjustments, none were significant. Differences in discomfort (0: no discomfort at all; 10: maximum discomfort) were found across conditions for set 1 (range of 2-3), 2 (range of 3.2-5), 3 (range of 4-6.5), and 4 (range of 5-7). Post-hoc analyses only found differences within set 3. Although it is presently unknown if higher pressures are required for optimal adaption of tissues other than skeletal muscle, our results suggest that the perceptual rating during exercise is unlikely to be a limiting factor in the application of higher pressures. (C) 2016 Elsevier Inc. All rights reserved.