Vanwye William R, Weatherholt Alyssa M, Winchester Lee J, Owens Johnny G, Spears Micah
School of Physical Therapy, Florida Southern College, Lakeland, FL, USA.
Department of Kinesiology and Sport, University of Southern Indiana, Evansville, IN, USA.
Int J Exerc Sci. 2023 May 1;16(2):676-687. doi: 10.70252/BDXB2611. eCollection 2023.
The study aimed to assess cardiovascular responses to low-intensity aerobic exercise with varying levels of limb occlusion pressures (LOP) in a healthy population of men and women 30 to 60 years. The study was a single-session repeated measures design. Thirty individuals completed the study. All subjects participated in a single bout of low-intensity cycling (30-39% HRR) with bilateral lower extremity (LE) BFR for four 5-minute stages [0% (No BFR), 40%, 60%, and 80% LOP] with a 2-minute active rest between stages (BFR pressure released). The subjects' systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), oxygen saturation (SpO), and ratings of perceived exertion (RPE) were measured at rest, peak, immediately post, post-15 minutes, and post-30 minutes. Peak SBP (no BFR 160.7 ±19.1 mmHg; 40% LOP 173.6 ± 18.7 mmHg; 60 % LOP; 182.5 ± 21.1 mmHg; 80% LOP 193.5± 23.3 mmHg ; p<0.001; ), DBP (no BFR 74.9 ± 8.5 mmHg; 40% LOP (83.0 ± 9.0 mmHg;60 % LOP 90.4 ± 8.7 mmHg; 80% LOP 97.7 ± 9.5 mmHg ;p<0.001; ), MAP (no BFR 103.5 ± 10.1 mmHg; 40% LOP 113.2 ± 10.5 mmHg; 60% LOP 121.1 ± 11.7 mmHg; 80% LOP 129.7 ± 12.9 mmHg; p<0.001; ), and RPE (No BFR 10.0 ± 2.0; 40 % LOP 11.5 ± 2.3; 60% LOP 13.2 ± 2.6; 80% LOP 14.5 ± 3.; p<0.001; ) were significantly higher with each progressing stage. The results indicate that low-intensity cycling with bilateral LE BFR for each LOP stage resulted in elevated SBP, DBP, MAP, and RPE despite maintaining a fixed HR.
该研究旨在评估30至60岁健康男女群体中，不同肢体压迫压力（LOP）水平下的低强度有氧运动对心血管系统的反应。该研究采用单节段重复测量设计。30名个体完成了该研究。所有受试者参加了一轮低强度骑行运动（心率储备的30%-39%），双侧下肢进行血流限制（BFR），共四个5分钟阶段[0%（无BFR）、40%、60%和80% LOP]，阶段间有2分钟的主动休息（BFR压力释放）。在静息、运动峰值、运动结束即刻、运动后15分钟和运动后30分钟测量受试者的收缩压（SBP）、舒张压（DBP）、平均动脉压（MAP）、心率（HR）、血氧饱和度（SpO）和主观用力程度分级（RPE）。运动峰值时的SBP（无BFR时为160.7±19.1 mmHg；40% LOP时为173.6±18.7 mmHg；60% LOP时为182.5±21.1 mmHg；80% LOP时为193.5±23.3 mmHg；p<0.001）、DBP（无BFR时为74.9±8.5 mmHg；40% LOP时为83.0±9.0 mmHg；60% LOP时为90.4±8.7 mmHg；80% LOP时为97.7±9.5 mmHg；p<0.001）、MAP（无BFR时为103.5±10.1 mmHg；40% LOP时为113.2±10.5 mmHg；60% LOP时为121.1±11.7 mmHg；80% LOP时为129.7±12.9 mmHg；p<0.001）和RPE（无BFR时为10.0±2.0；40% LOP时为11.5±2.3；60% LOP时为13.2±2.6；80% LOP时为14.5±3.；p<0.001）随着每个阶段的推进均显著升高。结果表明，尽管心率保持固定，但在每个LOP阶段进行双侧下肢BFR的低强度骑行运动均会导致SBP、DBP、MAP和RPE升高。
