Amorim Samuel, Gaspar Alexandra Passos, Degens Hans, Cendoroglo Maysa Seabra, de Mello Franco Fábio Gazelato, Ritti-Dias Raphael Mendes, Cucato Gabriel Grizzo, Rolnick Nicholas, de Matos Luciana Diniz Nagem Janot
Hospital Israelita Albert Einstein, Sao Paulo 05652-900, Brazil.
Research Centre for Musculoskeletal Science & Sports Medicine, Manchester Metropolitan University, Manchester M1 5GD, UK.
J Cardiovasc Dev Dis. 2022 Mar 16;9(3):85. doi: 10.3390/jcdd9030085.
Purpose: Low-intensity resistance exercise with moderate blood-flow restriction (LIRE-BFR) is a new trending form of exercises worldwide. The purpose of this study was to compare the acute effect of a single bout of traditional resistance exercise (TRE) and LIRE-BFR on arterial stiffness in older people with slow gait speeds. Methods: This was a randomized, controlled clinical study. Seventeen older adults (3 men; 14 women; 82 ± 5 years old) completed a session of TRE (n = 7) or LIRE-BFR (n = 10). At baseline and after 60 min post-exercise, participants were subject to blood pressure measurement, heart rate measurements and a determination of arterial stiffness parameters. Results: There was no significant difference between the TRE and LIRE-BFR group at baseline. Pulse-wave velocity increased in both groups (p < 0.05) post-exercise with no between-group differences. Both exercise modalities did not produce any adverse events. The increase in systolic blood pressure, pulse pressure, augmentation pressure and pulse wave velocity (all p > 0.05) were similar after both TRE and LIRE-BFR. Conclusion: TRE and LIRE-BFR had similar responses regarding hemodynamic parameters and pulse-wave velocity in older people with slow gait speed. Long-term studies should assess the cardiovascular risk and safety of LIRE-BFR training in this population.
低强度抗阻运动结合适度血流限制（LIRE - BFR）是一种在全球范围内新兴的运动形式。本研究旨在比较单次传统抗阻运动（TRE）和LIRE - BFR对步态速度较慢的老年人动脉僵硬度的急性影响。方法：这是一项随机对照临床研究。17名老年人（3名男性；14名女性；82±5岁）完成了一次TRE（n = 7）或LIRE - BFR（n = 10）训练。在基线和运动后60分钟，对参与者进行血压测量、心率测量以及动脉僵硬度参数测定。结果：TRE组和LIRE - BFR组在基线时无显著差异。运动后两组的脉搏波速度均增加（p < 0.05），组间无差异。两种运动方式均未产生任何不良事件。TRE和LIRE - BFR后收缩压、脉压、增强压和脉搏波速度的增加（均p > 0.05）相似。结论：TRE和LIRE - BFR在步态速度较慢的老年人中，在血流动力学参数和脉搏波速度方面有相似的反应。长期研究应评估LIRE - BFR训练在该人群中的心血管风险和安全性。
