Tajra Vitor, Vieira Denis C L, Tibana Ramires A, Teixeira Tatiane G, Silva Alessandro O, Farias Darlan L, Nascimento Dahan da C, de Sousa Nuno M F, Willardson Jeffrey, Prestes Jonato
Graduation Program on Physical Education, Catholic University of Brasilia, Brasilia, Brazil.
Clin Physiol Funct Imaging. 2015 Mar;35(2):127-33. doi: 10.1111/cpf.12137. Epub 2014 Feb 17.
The purpose of the present study was to compare the effects of resistance exercise (RE) leading to failure versus not to failure on 24-h blood pressure (BP) and rate-pressure product (RPP) responses in normotensive and hypertensive trained elderly women.
Seven normotensive women and seven women with medically documented hypertension randomly performed three experimental sessions: (i) a non-exercise control session that involved 30 min of seated rest, (ii) whole body RE leading to failure that involved three sets with an eight repetitions maximum (8RM) load and (iii) whole body RE not to failure that involved three sets with 70% of an 8RM load. Systolic BP (SBP), diastolic BP (DBP) and mean BP (MBP) responses during each hour of sleep and awake states were measured.
Results of all subjects revealed that the RPP was higher (P ≤ 0.05) during afternoon and night hours after the RE session leading to failure versus not to failure and the non-exercise control session. For the hypertensive group during the night hours, SBP remained higher after the RE session not to failure (P = 0.047) versus non-exercise control session. For the normotensive group, DBP remained higher after the RE session leading to failure over the 24-h period (approximately 8 mmHg h(-1), P = 0.044) and the period upon awaking (approximately 5 mmHg h(-1), P = 0.044) versus the hypertensive group.
The normotensive elderly women of this pilot study presented a greater cardiovascular response to RE leading to failure, as a consequence of the higher training intensity.
本研究旨在比较在血压正常和高血压的老年女性中，导致疲劳的抗阻运动（RE）与未导致疲劳的抗阻运动对24小时血压（BP）和率压积（RPP）反应的影响。
7名血压正常的女性和7名有医学记录的高血压女性随机进行三个实验阶段：（i）一个非运动对照阶段，包括30分钟的坐姿休息；（ii）导致疲劳的全身抗阻运动，包括三组，每组最大重复8次（8RM）负荷；（iii）未导致疲劳的全身抗阻运动，包括三组，每组为8RM负荷的70%。测量睡眠和清醒状态下每小时的收缩压（SBP）、舒张压（DBP）和平均血压（MBP）反应。
所有受试者的结果显示，与未导致疲劳的抗阻运动阶段和非运动对照阶段相比，导致疲劳的抗阻运动阶段后下午和夜间的RPP更高（P≤0.05）。对于高血压组，在夜间，未导致疲劳的抗阻运动阶段后的SBP仍高于非运动对照阶段（P = 0.047）。对于血压正常组，与高血压组相比，导致疲劳的抗阻运动阶段后24小时（约8 mmHg·h⁻¹，P = 0.044）和醒来后阶段（约5 mmHg·h⁻¹，P = 0.044）的DBP仍然更高。
在这项初步研究中，血压正常的老年女性由于训练强度较高，对导致疲劳的抗阻运动表现出更大的心血管反应。
