急性上肢哑铃训练对颈总动脉硬度和血液动力学的影响

doi:10.3969/j.issn.0258-8021. 2014. 03.03

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摘要抗阻力训练对于动脉硬度的影响存在着相互矛盾的结果。为研究不同负荷的急性上肢哑铃训练对颈总动脉硬度和血液动力学的影响，选择10名健康男性志愿者，年龄（21 ± 2）岁，分别进行5 kg和7 kg负荷的哑铃上肢曲臂训练各50次，两种负荷中间休息30 min。用彩色超声多普勒记录静息状态及不同哑铃负荷训练后颈总动脉的管径和轴心流速波形，用电子自动血压计同步测量心率和肱动脉血压。基于检测的实验数据，用经典血液动力学理论对颈总动脉硬度、压力-应变弹性模量以及相关血液动力学参数进行分析和计算。结果表明，受试者经过急性上肢哑铃训练后，心率、最大轴心流速、收缩压和最大壁面切应力等血液动力学参数明显增大，而颈总动脉管径、平均流量率、平均血压等参数没有明显变化。此外，在经过5 kg哑铃训练后，最大流量率和平均轴心流速显著增加，最小轴心流速显著减小，颈总动脉硬度、压力-应变弹性模量、舒张压、最小壁面切应力和振荡剪切指数无明显变化；而7 kg哑铃训练后，颈总动脉硬度、压力-应变弹性模量、振荡剪切指数明显增加，舒张压、最小壁面切应力显著降低，平均轴心流速和轴心流速最小值无明显变化。上肢急性哑铃训练会明显改变部分血液动力学参数，在高负荷训练时会急性增加颈总动脉的硬度。

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	申华¹
	3刘海斌²侯杰¹覃开蓉^1*

关键词 ：上肢, 急性哑铃训练, 颈总动脉, 血液动力学, 动脉硬度

Abstract：There are conflicting results on the impact of resistance trainings on arterial stiffness. To investigate the acute effects of resistance exercise trainings of upper limbs by different workload dumbbells on the arterial stiffness and hemodynamics in the common carotid arteries, ten male healthy young volunteers with average age 21 years (21±2years) underwent two groups of resistance exercise trainings of upper limb with the different workloads on dumbbells. At rest and right after the exercise training, a color ultrasonic doppler test was used to measure the waveforms of arterial diameter and centerline velocity in the right common carotid artery. The heart rate, systolic and diastolic blood pressures were simultaneously measured on the left brachial artery using a sphygmomanometer. All measured data were analyzed based upon Womersely theory. Furthermore, the arterial stiffness, pressurestrain elastic modulus, and associated hemodynamic parameters were calculated. The results of statistical analysis showed that the heart rate and maximum wall shear stress were significantly increased after dumbbells exercises while arterial diameter, mean flow rates and mean blood pressure were not significantly changed; in one cardiac cycle, significant increases could be observd in the maximum centerline velocities and mean systolic blood pressure. After 5 kg workload, maximum flow rate and mean centerline velocities were significantly increased and minimum velocity decreased while arterial stiffness, pressurestrain elastic modulus, diastolic blood pressure, minimum shear stress and OSI were not changed. When dumbbells workload was increased from 5 kg to 7 kg, arterial stiffness, pressurestrain elastic modulus and OSI were significantly increased while the diastolic blood pressure, minimum shear stress
signifieantly reduced. No significant changes were detected in mean centerline velocities and minimum velocity. These results indicated that resistance arm exercise trainings by dumbbells induced significant effects on the local hemodynamic parameters in the common carotid arteries, and acute dumbbells exercise trainings in high intensity of upper limb increased the stiffness of the common carotid artery.
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Key words： upper limbs acute exercise trainings by dumbbells common carotid artery hemodynamics arterial stiffness

基金资助:国家自然科学基金(31370948)；国家科技支撑计划（2012BAJ18B06）；辽宁省教育厅一般项目研究（L2012490）

引用本文:

申华^1,3刘海斌²侯杰¹覃开蓉^1*. 急性上肢哑铃训练对颈总动脉硬度和血液动力学的影响[J]. 中国生物医学工程学报, 2014, 33(3): 274-282.
SHEN Hua^1,3LIU HaiBin²HOU Jie¹QIN KaiRong^1*. Effects of Acute Dumbbell Trainings of Upper Limbs on theCommon Carotid Arterial Stiffness and Hemodynamics. journal1, 2014, 33(3): 274-282.

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