HRV triangular index 三角指数 ; HRV三角指数
Objective: to explore the change of activities of the cardiac autonomic nervous system in the EMG biofeedback with the quantified index of heart rate variability (HRV).
目的：应用心率变异性的频域指标探讨肌电生物反馈中的心脏自主神经系统功能活动的量化改变。
HRV is the better index on assessing autonomic nerve change, which can be used to guide clinical treatment of XS.
心率变异分析可作为观察x综合征自主神经变化和指导临床治疗的指标。
Vascular endothelial function was evaluated by arterial augmentation index (AAI), and autonomic modulation was evaluated by heart rate variability (HRV) and blood pressure variability (BPV).
采用动脉增加指数（AAI）评价血管内皮功能，心率变异（HRV）及血压变异（BPV）评价自主神经调制。
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