Mahmoud Waleed S, Kamel Ehab M, Mahmoud Mustafa Z, Ahmed Ahmed S
Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Saudi Arabia, Riyadh, Saudi Arabia; Department of Basic Sciences, Faculty of Physical Therapy, Cairo University, Egypt.
Department of Physiotherapy, College of Applied Medical Science, University of Hail, Saudi Arabia; Department of Physiotherapy, El Helal Hospital, Egypt.
J Manipulative Physiol Ther. 2020 Feb;43(2):152-159. doi: 10.1016/j.jmpt.2019.04.005. Epub 2020 May 30.
To evaluate the effect of 3 different time durations of sustained end-range cervical rotation during static stretching exercises on the hemodynamics of the vertebral artery.
This observational study used Doppler ultrasonography to measure the average vertebral artery hemodynamics at the sustained end-range cervical rotation after 3 time durations of static stretching exercise: 10 seconds, 30 seconds, and 60 seconds. The sustained end-range cervical rotation was applied to 30 asymptomatic male participants.
The peak systolic velocity 35.2 ± 6.9 cm/s and the end systolic velocity 12.7 ± 1.6 cm/s reduced significantly, while resistive index 0.74 ± 0.03 increased after 60 seconds of sustained end-range contralateral cervical rotation by 39.1%, 32.4%, and 8.8%, respectively, compared with the neutral position. There were no significant differences found between peak systolic velocity and resistive index after a stretching duration of 60 and 30 seconds. Similarly, there were no notable changes in end systolic velocity when comparing 10 seconds with 30 seconds.
The static stretching exercise using sustained end-range cervical rotation for 60 seconds induced marked changes in the hemodynamics of the vertebral artery.
评估静态拉伸运动中3种不同时长的持续性颈椎终末位旋转对椎动脉血流动力学的影响。
本观察性研究采用多普勒超声在静态拉伸运动3种时长（10秒、30秒和60秒）后的持续性颈椎终末位旋转时测量椎动脉平均血流动力学。对30名无症状男性参与者进行持续性颈椎终末位旋转。
与中立位相比，在对侧颈椎终末位持续旋转60秒后，收缩期峰值流速35.2±6.9厘米/秒和收缩期末流速12.7±1.6厘米/秒分别显著降低39.1%、32.4%，阻力指数0.74±0.03升高8.8%。在拉伸时长60秒和30秒后，收缩期峰值流速和阻力指数之间未发现显著差异。同样，在比较10秒和30秒时，收缩期末流速也没有明显变化。
采用持续性颈椎终末位旋转60秒的静态拉伸运动可引起椎动脉血流动力学的显著变化。
