Okamoto T, Masuhara M, Ikuta K
Institute of Health Science and Applied Physiology, Kinki Welfare University, Fukusaki, Kanzaki, Japan.
J Hum Hypertens. 2006 May;20(5):348-54. doi: 10.1038/sj.jhh.1001979.
It has been suggested that resistance training (RT) increases arterial stiffness. The purpose of the present study was to clarify the effect of eccentric RT (ERT) and concentric RT (CRT) on arterial stiffness in female adults by an interventional study. In total, 29 healthy female subjects were randomly assigned to either the ERT group (n=10), CRT group (n=10) or sedentary (SED) group (n=9). The ERT and CRT groups performed resistance training three times a week for 8 weeks. We determined brachial blood pressure, brachial-ankle pulse wave velocity (baPWV), carotid artery intimamedial thickness (IMT) and carotid arterial lumen diameter before and after training and after detraining. The before-training baPWV did not differ significantly among the three groups. After 8 weeks of RT, arterial stiffness in the CRT group was increased compared with the ERT and SED group (P<0.05). However, brachial blood pressure, baPWV, carotid IMT and carotid lumen diameter in the ERT and CRT groups were unchanged by RT for 8 weeks. Consequently, it was clarified that arterial stiffness was not changed by ERT for 8 weeks. This suggests that ERT may be effective as an exercise prescription for middle-aged and elderly adults.
有人认为抗阻训练（RT）会增加动脉僵硬度。本研究的目的是通过一项干预性研究，阐明离心抗阻训练（ERT）和向心抗阻训练（CRT）对成年女性动脉僵硬度的影响。总共29名健康女性受试者被随机分配到ERT组（n = 10）、CRT组（n = 10）或久坐（SED）组（n = 9）。ERT组和CRT组每周进行3次抗阻训练，持续8周。我们在训练前、训练后和停训后测定了肱动脉血压、臂踝脉搏波速度（baPWV）、颈动脉内膜中层厚度（IMT）和颈动脉管腔直径。训练前，三组之间的baPWV无显著差异。RT 8周后，CRT组的动脉僵硬度与ERT组和SED组相比有所增加（P<0.05）。然而，ERT组和CRT组的肱动脉血压、baPWV、颈动脉IMT和颈动脉管腔直径在RT 8周后没有变化。因此，明确了ERT 8周不会改变动脉僵硬度。这表明ERT可能作为中老年成年人的运动处方是有效的。
