Postgraduate Program in Medical Sciences, Faculty of Medical Sciences.
Laboratory of Physical Activity and Health Promotion.
Blood Press Monit. 2021 Jun 1;26(3):183-190. doi: 10.1097/MBP.0000000000000508.
This study investigated pulse wave analysis in normotensive and hypertensive men after cycling bouts with different intensities and amounts of energy expended.
Twenty-four men were assigned into normotensive (n = 14; age: 40.7 ± 2.8 years; 24-h ambulatory SBP/DBP:121 ± 2/74 ± 1 mmHg) and hypertensive (n = 10; age: 39.2 ± 2.3 years; 24-h ambulatory SBP/DBP:139 ± 3/86 ± 2 mmHg) groups. Participants undertook a maximal cardiopulmonary exercise test, a nonexercise control session (CTL) and three cycling bouts [two prolonged bouts expending 300 kcal at 50% (i.e. P-MOD) and 70% (i.e. P-VIG) oxygen uptake reserve (VO2R) and one short bout expending 150 kcal at 50% VO2R (i.e. S-MOD)] performed in a randomized order. Central SBP (cSBP), pulse pressure (cPP), augmentation pressure, augmentation index (AIx), heart rate (HR) and AIx adjusted for HR (AIx@75) were determined 10 min before, and 30- and 70-min postintervention.
Compared to CTL, only the P-VIG changed the cSBP [70-min (Δ -11.7 mmHg)], cPP [70-min (Δ:-7.4 mmHg)], augmentation pressure [30-min (Δ:-5.7 mmHg); 70-min (Δ:-7.3 mmHg)], AIx [30-min (Δ:-15.3 %); 70-min (Δ:-16.4 %)], AIx@75 [30-min (Δ:-12.8 %); 70-min (Δ:-13.9 %)] and HR [70-min (Δ: 9.9 bpm)] in the hypertensive group. However, all exercise bouts mitigated the increased cSBP responses post-CTL in the hypertensive group.
The present study provides evidence that vigorous-intensity aerobic exercise reduces acute central pressure and pulse wave reflection in hypertensive men.
本研究调查了在不同强度和能量消耗的自行车运动后，正常血压和高血压男性的脉搏波分析。
24 名男性被分配到正常血压组（n=14；年龄：40.7±2.8 岁；24 小时动态收缩压/舒张压：121±2/74±1mmHg）和高血压组（n=10；年龄：39.2±2.3 岁；24 小时动态收缩压/舒张压：139±3/86±2mmHg）。参与者进行了最大心肺运动测试、非运动对照（CTL）和三次自行车运动[两次延长运动，消耗 300 千卡，占 50%（即 P-MOD）和 70%（即 P-VIG）摄氧量储备（VO2R），一次短时间运动，消耗 150 千卡，占 50% VO2R（即 S-MOD）]，以随机顺序进行。在干预前 10 分钟、干预后 30 分钟和 70 分钟，测量中心收缩压（cSBP）、脉压（cPP）、增强压、增强指数（AIx）、心率（HR）和 HR 校正后的 AIx（AIx@75）。
与 CTL 相比，只有 P-VIG 改变了高血压组的 cSBP[70 分钟（Δ-11.7mmHg）]、cPP[70 分钟（Δ-7.4mmHg）]、增强压[30 分钟（Δ-5.7mmHg）；70 分钟（Δ-7.3mmHg）]、AIx[30 分钟（Δ-15.3%）；70 分钟（Δ-16.4%）]、AIx@75[30 分钟（Δ-12.8%）；70 分钟（Δ-13.9%）]和 HR[70 分钟（Δ9.9 bpm）]。然而，所有运动都减轻了高血压组 CTL 后升高的 cSBP 反应。
本研究提供的证据表明，剧烈强度的有氧运动可降低高血压男性的急性中心压力和脉搏波反射。
