Forde Cuisle, Johnston Maeve, Haberlin Ciaran, Breen Paul, Greenan Sinead, Gissane Conor, Comyns Tom, Maher Vincent, Gormley John
Disipline of Physiotherapy, Trinity Centre for Health Sciences, St. James's Hospital, Dublin, Ireland.
School of Sport Health and Applied Science, Saint Mary's University Twickenham London, Twickenham, London, UK.
High Blood Press Cardiovasc Prev. 2020 Feb;27(1):83-91. doi: 10.1007/s40292-020-00362-5. Epub 2020 Jan 31.
The effects of resistance exercise on vascular function are unclear.
To investigate the acute haemodynamic (blood pressure and augmentation index) and rate of perceived exertion (RPE) response to two types of resistance exercises of equal workload-a set of unilateral 35% of one repetition maximum (1RM) quadriceps extension and a set of unilateral 70% 1RM quadriceps extension.
Twenty two young healthy males completed both exercises on separate days. Heart rate, central and peripheral systolic and diastolic blood pressure (BP), augmentation pressure, augmentation index (AIx), augmentation index at a heart rate of 75 beats per minute (AIx75), and RPE were measured using applanation tonometry before exercise, immediately after exercise, 5 min after exercise and 15 min after exercise.
AIx75 was significantly lower 5 min after exercising at 35% of 1RM than 70% of 1RM. Systolic blood pressure was significantly lower at 5 min post exercise for both intensities. There was no significant difference in RPE between conditions or time points.
Results suggest that changes in blood pressure and augmentation index vary depending on the intensity of resistance exercise regardless of the volume of exercise carried out. Changes in AIx75 in response to resistance exercise may be independent of changes in BP.
抗阻运动对血管功能的影响尚不清楚。
研究等量负荷的两种抗阻运动——一组单侧股四头肌伸展至最大重复次数（1RM）的35%以及一组单侧股四头肌伸展至最大重复次数的70%——所引起的急性血流动力学变化（血压和增强指数）及自觉用力程度（RPE）反应。
22名年轻健康男性在不同日期完成这两种运动。在运动前、运动后即刻、运动后5分钟和运动后15分钟，使用压平眼压计测量心率、中心和外周收缩压与舒张压（BP）、增强压、增强指数（AIx）、心率为每分钟75次时的增强指数（AIx75）以及RPE。
以1RM的35%进行运动后5分钟，AIx75显著低于以1RM的70%进行运动后5分钟。两种强度运动后5分钟时收缩压均显著降低。不同运动条件或时间点之间RPE无显著差异。
结果表明，血压和增强指数的变化因抗阻运动强度而异，与运动总量无关。抗阻运动引起的AIx75变化可能独立于血压变化。
