INDIVIDUAL-DIFFERENCES IN THE AUTONOMIC ORIGINS OF HEART-RATE REACTIVITY - THE PSYCHOMETRICS OF RESPIRATORY SINUS ARRHYTHMIA AND PREEJECTION PERIOD
INDIVIDUAL-DIFFERENCES IN THE AUTONOMIC ORIGINS OF HEART-RATE REACTIVITY - THE PSYCHOMETRICS OF RESPIRATORY SINUS ARRHYTHMIA AND PREEJECTION PERIOD
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DOI：
10.1111/j.1469-8986.1994.tb02449.x
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发表时间：
1994-07-01
期刊：
影响因子：
3.7
通讯作者：
BERNTSON, GG
中科院分区：
文献类型：
--
作者：
CACIOPPO, JT;UCHINO, BN;BERNTSON, GG
心率反应性已经被概念化，至少是隐含的，作为一个一维的结构，从低到高，反映了肾上腺素能反应的个体差异，每天的压力。然而，将个体分类为心率反应性高忽略了这种反应性的自主起源中可能的个体差异。68名女性暴露于直立和言语应激源，以确定心率，射血前期和呼吸性窦性心律失常的心理测量特性（姿势稳定性，收敛和判别效度）。结果显示：（a）基础、应激、简单反应性（应激-基线）和心率、射血前期和呼吸性窦性心律失常的残余变化指数在不同姿势下均保持稳定;（B）心率反应性与射血前期和呼吸性窦性心律失常反应性显著相关，而后两项指标无关。因此，通过关注两个自主分支的活动的并发估计，可以显著改善反应性分类。
Heart rate reactivity has been conceptualized, at least implicitly, as a unidimensional construct ranging from low to high, reflecting individual differences in adrenergic reactivity to daily stressors. However, an individual's classification as high in heart rate reactivity ignores possible individual differences in the autonomic origins of this reactivity. Sixty-eight women were exposed to orthostatic and speech stressors to determine the psychometric properties (postural stability, convergent and discriminant validity) of heart rate, preejection period, and respiratory sinus arrhythmia. Results revealed that (a) basal, stress, simple reactivity (stress - baseline), and residualized change indices of heart rate, preejection period, and respiratory sinus arrhythmia were stable across postures and (b) heart rate reactivity was significantly related to preejection period and respiratory sinus arrhythmia reactivity, whereas the latter two measures were unrelated. Reactivity classifications may therefore be significantly improved by attention to concurrent estimates of the activity of both autonomic branches.