Fecchio Rafael Yokoyama, Sousa Julio C S de, Oliveira-Silva Laura, Silva Junior Natan D da, Pio-Abreu Andrea, Silva Giovânio V da, Drager Luciano F, Low David A, Forjaz Cláudia L M
Exercise Hemodynamic Laboratory, School of Physical Education and Sport, University of São Paulo.
Hypertension Unit, Renal Division of Hospital das Clínicas, Medical School, University of São Paulo, São Paulo, Brazil.
Blood Press Monit. 2025 Apr 1;30(2):57-64. doi: 10.1097/MBP.0000000000000737. Epub 2024 Dec 2.
A possible chronic effect of exercise training is the attenuation of the acute decrease in blood pressure (BP) observed after the execution of a session of exercise [i.e. called postexercise hypotension (PEH)]. However, there are few empirical data regarding this issue, and the possible mechanisms involved in this blunted response have not been studied.
The study aimed to evaluate the effects of dynamic resistance training (DRT) on PEH and its systemic, vascular, and autonomic mechanisms.
Data from 16 middle-aged treated hypertensive men who underwent DRT (eight exercises, 50% of 1RM, three sets until moderate fatigue) three times/week for 10 weeks were analyzed. Before and after the training period, the participants underwent an experimental session in which BP (auscultation), systemic hemodynamics (CO 2 rebreathing), vascular function (duplex ultrasound), and cardiovascular autonomic modulation (spectral analysis of heart rate and BP variabilities) were assessed before and after a session of DRT.
DRT reduced preexercise systolic BP and mitigated the systolic PEH that occurred before but not after the training period ( P = 0.017). DRT did not change the diastolic PEH that occurred with similar magnitude before and after the training period ( P = 0.024). DRT did not change the PEH mechanisms, except for cardiac sympathovagal balance that increased significantly more after the session of DRT conducted in the posttraining evaluation ( P = 0.017).
In medicated hypertensive men, 10 weeks of DRT decreased preexercise systolic BP, abolished systolic PEH, and induced a greater increase in postdynamic resistance exercise sympathovagal balance.
运动训练的一个可能的慢性效应是减轻运动后观察到的血压（BP）急性下降[即所谓的运动后低血压（PEH）]。然而，关于这个问题的实证数据很少，并且这种钝化反应所涉及的可能机制尚未得到研究。
本研究旨在评估动态抗阻训练（DRT）对PEH及其全身、血管和自主神经机制的影响。
分析了16名接受DRT治疗的中年高血压男性的数据，他们每周进行3次DRT（8项运动，1RM的50%，三组直至中度疲劳），共10周。在训练期前后，参与者进行了一次实验，在一次DRT前后评估血压（听诊）、全身血流动力学（二氧化碳重呼吸）、血管功能（双功超声）和心血管自主调节（心率和血压变异性的频谱分析）。
DRT降低了运动前收缩压，并减轻了训练期前出现的收缩期PEH，但训练期后未减轻（P = 0.017）。DRT没有改变训练期前后出现的幅度相似的舒张期PEH（P = 0.024）。DRT没有改变PEH机制，除了在训练后评估中进行的DRT后心脏交感迷走平衡显著增加更多（P = 0.017）。
在药物治疗的高血压男性中，10周的DRT降低了运动前收缩压，消除了收缩期PEH，并导致动态抗阻运动后交感迷走平衡有更大的增加。
