Cardiovascular responses induced by whole-body vibration training in patients with subacute stroke

作     者：LIAO Lin-rong LIAO Man-xia WANG Jun WANG Chu-shan ZHANG Zhi-wei LIU Kai-feng MA Jian-qing 廖麟荣;廖曼霞;王俊;王楚珊;张志伟;刘开锋;马建青

作者机构：Department of Physical Therapy Guangdong Provincial Work Injury Rehabilitation Hospital Department of Rehabilitation Yixing JORU Rehabilitation Hospital 

出 版 物：《South China Journal of Cardiology》 (岭南心血管病杂志（英文版）)

年 卷 期：2019年第20卷第1期

页      面：15-24页

学科分类：10[医学] 

基　　金：supported by Medical Scientific Research Foundation of Guangdong Province of China(No.A2016537) 

主　　题：whole body vibration cerebrovascular accident cardiovascular response oxygen consumption heart rate rate pressure product 

摘      要：Background Whole-body vibration(WBV) therapy has become a common treatment in rehabilitation of various patient populations. While it has been shown in healthy young adults that the oxygen consumption rate(VO_2)and heat rate(HR) are significantly increased when WBV is added to exercise. However, the cardiovascular response to WBV in patients with subacute stroke is unknown. The objective of this study was to determine the acute cardiovascular responses to WBV during the various exercises in different WBV conditions in patients with subacute stroke(onset less than 3 months). Methods A total of 54 subjects with subacute stroke performed six exercises while being exposed to 3 WBV conditions:(1) no WBV,(2) low WBV intensity [amplitude: 0.6 mm,frequency: 20 Hz, peak acceleration: 0.96 gravitational constant(G)], and(3) high WBV intensity(amplitude:0.44 mm, frequency: 30 Hz, peak acceleration: 1.61 G). The cardiovascular responses(HR and VO_2) were measured by a FitMateTMPro metabolic system during the 6 exercises. Two-way repeated measures ANOVA was used to compare the VO_2, and HR data across the different conditions. In addition, we calculated the rate pressure product(RPP) =(HR × systolic blood pressure)/100, for measuring the myocardial oxygen demand. Two-way ANOVA with repeated measures was used to compare the RPP data across the different test conditions. Results Exposure to WBV(high-and low-intensity protocols) significantly induced higher VO_2 by 0.35-1.07 mL·kg-1·min-1(P0.05). For RPP, there was an overall significant effect between pre-and post-WBV(P0.001). The main effect of WBV intensity(P=0.572), and intensity × time interaction effect(P=0.756), however,were not significant. Conclusions HR and VO_2 are increased significantly with ad