It is difficult to define the value of comprehensive variability coefficient of resisting force and acting force in reliability index inspection.

抗力和作用力的综合变异系数的取值是规范套改中可靠度指标检验中的难题。

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Of the 32 patient with continual atrial fibrillation, the index of heart rate variability(SDNN; SDANN; RMSSD and HRV triangular index)were analysed on the basis of Holter monitor.

方法在动态心电图的基础上测量分析32例持续性心房颤动患者的心率变异性指标（SDNN；SDANN；RMSSD和HRV三角指数）的改变。

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Objective: To assess the instructional value of heart rate variability index (HRVI) used for acute myocardial infarction (AMI) patients under the early rehabilitation exercise.

目的：评价心率变异指数对急性心肌梗死(ami)患者进行早期康复锻炼的指导意义。

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Heart-rate variability, says Dr Stein, is a good index of the degree of control an individual has over his autonomic nervous system (which controls many of the internal organs).

ECONOMIST: Diet and behaviour