Kingsley J Derek, Tai Yu Lun, Mayo Xian, Glasgow Alaina, Marshall Erica
a Cardiovascular Dynamics Laboratory, Exercise Physiology , Kent State University , Kent , OH , USA.
Eur J Sport Sci. 2017 Sep;17(8):1056-1064. doi: 10.1080/17461391.2017.1342275. Epub 2017 Jul 3.
We sought to determine the sex-specific effects of an acute bout of free-weight resistance exercise (RE) on pulse wave reflection (aortic blood pressures, augmentation index (AIx), AIx at 75 bpm (AIx@75), augmentation pressure (AP), time of the reflected wave (Tr), subendocardial viability ratio (SEVR)), and aortic arterial stiffness in resistance-trained individuals. Resistance-trained men (n = 14) and women (n = 12) volunteered to participate in the study. Measurements were taken in the supine position at rest, and 10 minutes after 3 sets of 10 repetitions at 75% 1-repetition maximum on the squat, bench press, and deadlift. A 2 × 2 × 2 ANOVA was used to analyse the effects of sex (men, women) across condition (RE, control) and time (rest, recovery). There were no differences between sexes across conditions and time. There was no effect of the RE on brachial or aortic blood pressures. There were significant condition × time interactions for AIx (rest: 12.1 ± 7.9%; recovery: 19.9 ± 10.5%, p = .003), AIx@75 (rest: 5.3 ± 7.9%; recovery: 24.5 ± 14.3%, p = .0001), AP (rest: 4.9 ± 2.8 mmHg; recovery: 8.3 ± 6.0 mmHg, p = .004), and aortic arterial stiffness (rest: 5.3 ± 0.6 ms; recovery: 5.9 ± 0.7 ms, p = .02) with significant increases during recovery from the acute RE. There was also a significant condition × time for time of the reflected wave (rest: 150 ± 7 ms; recovery: 147 ± 9 ms, p = .02) and SEVR (rest: 147 ± 17%; recovery: 83 ± 24%, p = .0001) such that they were reduced during recovery from the acute RE compared to the control. These data suggest that an acute bout of RE increases AIx, AIx@75, and aortic arterial stiffness similarly between men and women without significantly altering aortic blood pressures.
我们试图确定一次急性自由重量抗阻运动（RE）对脉搏波反射（主动脉血压、增强指数（AIx）、心率75次/分时的增强指数（AIx@75）、增强压（AP）、反射波时间（Tr）、心内膜下存活比（SEVR））以及抗阻训练个体的主动脉僵硬度的性别特异性影响。抗阻训练的男性（n = 14）和女性（n = 12）自愿参与本研究。在静息仰卧位以及进行3组、每组10次、负荷为1次重复最大值的75%的深蹲、卧推和硬拉训练后10分钟进行测量。采用2×2×2方差分析来分析性别（男性、女性）、运动状态（RE、对照）和时间（静息、恢复）之间的影响。在不同运动状态和时间下，男女之间没有差异。RE对肱动脉或主动脉血压没有影响。对于AIx（静息：12.1±7.9%；恢复：19.9±10.5%，p = 0.003）、AIx@75（静息：5.3±7.9%；恢复：24.5±14.3%，p = 0.0001）、AP（静息：4.9±2.8 mmHg；恢复：8.3±6.0 mmHg，p = 0.004）和主动脉僵硬度（静息：5.3±0.6 ms；恢复：5.9±0.7 ms，p = 0.02）存在显著的运动状态×时间交互作用，在急性RE恢复过程中显著增加。对于反射波时间（静息：150±7 ms；恢复：147±9 ms，p = 0.02）和SEVR（静息：147±17%；恢复：83±24%，p = 0.0001）也存在显著的运动状态×时间交互作用，与对照相比，它们在急性RE恢复过程中降低。这些数据表明，一次急性RE在男性和女性中同样增加AIx、AIx@75和主动脉僵硬度，而不会显著改变主动脉血压。
