Curty Victor M, Melo Alexandre B, Caldas Leonardo C, Guimarães-Ferreira Lucas, de Sousa Nuno F, Vassallo Paula F, Vasquez Elisardo C, Barauna Valério G
Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil.
Center of Physical Education and Sports, Federal University of Espirito Santo, Vitoria, ES, Brazil.
Clin Physiol Funct Imaging. 2018 May;38(3):468-476. doi: 10.1111/cpf.12439. Epub 2017 Apr 26.
The aim of this study was to evaluate the acute effects of high-intensity eccentric exercise (HI-ECC) combined with blood flow restriction (BFR) on muscle damage markers, and perceptual and cardiovascular responses. Nine healthy men (26 ± 1 years, BMI 24 ± 1 kg m ²) underwent unilateral elbow extension in two conditions: without (HI-ECC) and with BFR (HI-ECC+BFR). The HI-ECC protocol corresponded to three sets of 10 repetitions with 130% of maximal strength (1RM). The ratings of perceived exertion (RPE) and pain (RPP) were measured after each set. Muscle damage was evaluated by range of motion (ROM), upper arm circumference (CIR) and muscle soreness using a visual analogue scale at different moments (pre-exercise, immediately after, 24 and 48 h postexercise). Systolic (SBP), diastolic (DBP), mean blood pressure (MBP) and heart rate (HR) were measured before exercise and after each set. RPP was higher in HI-ECC+BFR than in HI-ECC after each set. Range of motion decreased postexercise in both conditions; however, in HI-ECC+BFR group, it returned to pre-exercise condition earlier (post-24 h) than HI-ECC (post-48 h). CIR increased only in HI-ECC, while no difference was observed in HI-ECC+BFR condition. Regarding cardiovascular responses, MBP and SBP did not change at any moment. HR showed similar increases in both conditions during exercise while DBP decreased only in HI-ECC condition. Thus, BFR attenuated HI-ECC-induced muscle damage and there was no increase in cardiovascular responses.
本研究旨在评估高强度离心运动（HI-ECC）联合血流限制（BFR）对肌肉损伤标志物、感知反应和心血管反应的急性影响。九名健康男性（26±1岁，体重指数24±1 kg/m²）在两种情况下进行单侧伸肘运动：无血流限制（HI-ECC）和有血流限制（HI-ECC+BFR）。HI-ECC方案包括三组，每组10次重复，强度为最大力量（1RM）的130%。每组运动后测量主观用力程度（RPE）和疼痛程度（RPP）。在不同时间点（运动前、运动后即刻、运动后24小时和48小时），使用视觉模拟量表通过关节活动范围（ROM）、上臂围度（CIR）和肌肉酸痛来评估肌肉损伤。在运动前和每组运动后测量收缩压（SBP）、舒张压（DBP）、平均血压（MBP）和心率（HR）。每组运动后，HI-ECC+BFR组的RPP高于HI-ECC组。两种情况下运动后ROM均降低；然而，HI-ECC+BFR组比HI-ECC组更早（运动后24小时）恢复到运动前状态（运动后48小时）。CIR仅在HI-ECC组增加，而在HI-ECC+BFR组未观察到差异。关于心血管反应，MBP和SBP在任何时刻均无变化。运动期间，两种情况下HR的增加相似，而DBP仅在HI-ECC组降低。因此，BFR减轻了HI-ECC诱导的肌肉损伤，且心血管反应未增加。
