Curty Victor M, Zovico Paulo V C, Salgueiro Rafael B, Caldas Leonardo C, Leite Richard D, Sousa Nuno M F, Guimaraes-Fereira Lucas, 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.
Int J Exerc Sci. 2023 Mar 1;16(2):469-481. doi: 10.70252/IRZF8928. eCollection 2023.
The present study aimed to evaluate whether blood flow restriction (BFR) can prevent exercise-induced muscle damage in resistance exercise (RE) performed until concentric muscle failure (CMF). Twenty healthy volunteers (25 ± 4 years, 80.4 ± 11.8 kg, 175 ± 8 cm) performed three sets of unilateral biceps curl exercise (40% of 1RM) with (RE + BFR) and without (RE) BFR until CMF. A third condition was to perform the same number of repetitions as RE + BFR without using BFR (matched). Performing fewer repetitions, RE + BFR caused muscle fatigue post-exercise as high as that caused by RE. In addition, the range of motion, upper arm circumference, pressure pain threshold, and maximal voluntary contraction were immediately affected by our exercise protocol with BFR, returning rapidly to basal values within 24 h, while in RE, muscle damage markers remained elevated until 48 h post-exercise. The same results were observed concerning serum creatine kinase and lactate dehydrogenase activity. Thus, BFR + RE performed until CMF attenuated muscle damage following similar metabolic stress to RE alone performed until CMF, with less work volume.
本研究旨在评估血流限制（BFR）是否能预防在进行至向心肌肉力竭（CMF）的抗阻运动（RE）中运动诱发的肌肉损伤。20名健康志愿者（25±4岁，80.4±11.8kg，175±8cm）进行了三组单侧二头肌弯举运动（1RM的40%），一组采用BFR（RE+BFR），另一组不采用BFR（RE），直至达到CMF。第三种情况是在不使用BFR的情况下进行与RE+BFR相同次数的重复（匹配组）。由于重复次数较少，RE+BFR运动后引起的肌肉疲劳程度与RE引起的相同。此外，我们采用BFR的运动方案会立即影响活动范围、上臂围、压痛阈值和最大随意收缩，这些指标在24小时内迅速恢复至基础值，而在RE组中，肌肉损伤标志物在运动后48小时内仍保持升高。血清肌酸激酶和乳酸脱氢酶活性也观察到了相同的结果。因此，进行至CMF的BFR+RE与单独进行至CMF的RE相比，在相似的代谢应激下，肌肉损伤减轻，且工作量更小。
