Heffernan K S, Collier S R, Kelly E E, Jae S Y, Fernhall B
Department of Kinesiology and Community Health, University of Illinois at Urbana Champaign, Exercise and Cardiovascular Research Laboratory, Champaign, IL, USA.
Int J Sports Med. 2007 Mar;28(3):197-203. doi: 10.1055/s-2006-924290. Epub 2006 Oct 6.
We examined arterial stiffness, baroreflex sensitivity (BRS), and systolic arterial pressure (SAP) variability after an acute bout of aerobic exercise compared to resistance exercise. We hypothesized that arterial stiffness would be reduced after aerobic exercise, while it would be increased after resistance exercise, and these alterations would be associated with differential changes in BRS and SAP variability. Arterial stiffness, BRS, and SAP variability were assessed before and 20 min after a bout of aerobic exercise and resistance exercise in 13 male participants. Pulse wave velocity (PWV) was used to measure central (carotid-femoral) and peripheral (femoral-dorsalis pedis) arterial stiffness. BRS was derived via the sequence technique. Spectral decomposition of beat-to-beat SAP variability was used as an estimate of sympathetic vasomotor tone. A mode-by-time interaction (p < 0.001) was detected for central PWV, due to an increase in PWV (p < 0.05) following resistance exercise and a decrease in PWV following aerobic exercise (p < 0.05). A mode-by-time interaction was also detected for peripheral PWV (p < 0.05), due to a decrease in peripheral PWV following aerobic exercise (p < 0.05) with no change following resistance exercise. BRS was significantly lower following resistance compared with aerobic exercise (p < 0.004). SAP variability increased following resistance exercise (p < 0.05) but there was no interaction. In conclusion, aerobic exercise decreased both central and peripheral arterial stiffness, while resistance exercise significantly increased central arterial stiffness only. BRS was reduced after both bouts of exercise, but significantly greater reductions were seen following resistance exercise.
我们比较了急性有氧运动和抗阻运动后动脉僵硬度、压力反射敏感性（BRS）和收缩期动脉压（SAP）变异性。我们假设有氧运动后动脉僵硬度会降低，而抗阻运动后会增加，并且这些变化将与BRS和SAP变异性的不同变化相关。对13名男性参与者在进行一轮有氧运动和抗阻运动之前及之后20分钟评估动脉僵硬度、BRS和SAP变异性。脉搏波速度（PWV）用于测量中心（颈动脉 - 股动脉）和外周（股动脉 - 足背动脉）动脉僵硬度。BRS通过序列技术得出。逐搏SAP变异性的频谱分解用作交感神经血管运动张力的估计。由于抗阻运动后PWV增加（p < 0.05）且有氧运动后PWV降低（p < 0.05），检测到中心PWV存在运动方式与时间的交互作用（p < 0.001）。外周PWV也检测到运动方式与时间的交互作用（p < 0.05），因为有氧运动后外周PWV降低（p < 0.05），而抗阻运动后无变化。与有氧运动相比，抗阻运动后BRS显著降低（p < 0.004）。抗阻运动后SAP变异性增加（p < 0.05），但不存在交互作用。总之，有氧运动降低了中心和外周动脉僵硬度，而抗阻运动仅显著增加了中心动脉僵硬度。两轮运动后BRS均降低，但抗阻运动后降低幅度更大。
