Abstract：
Respiratory sinus arrhythmia (RSA; a measure of respiratory modulation of vagal control of heart rate) is a dynamic process. For mothers, RSA functioning has been associated with depressive symptoms and coincides with supportive parenting. However, research has largely focused on RSA suppression (i.e., difference score from rest to stress task). The present study examined depressive symptoms and supportive parenting with RSA instability-a dynamic measure of the magnitude of RSA change across a task. In two samples of mothers (N = 210), one with preschoolers (Study 1: n = 108, Mage = 30.68 years, SD = 6.06, 47.0% Black, 43.0% White) and one with adolescents (Study 2: n = 102, Mage = 35.51, SD = 6.51, 75.2% Black), RSA instability was calculated during an interaction task. In both studies, instrumental supportive parenting behaviors were negatively related to RSA instability. Findings provide preliminary support for RSA instability as an indicator of physiological dysregulation for mothers.
摘要：
呼吸性窦性心律失常(RSA;测量迷走神经对心率的控制的呼吸调节)是一个动态过程。对于母亲们来说,RSA功能与抑郁症状有关，并且与支持性育儿相吻合。然而,研究主要集中在RSA抑制(即，从休息到压力任务的差异得分)。本研究检查了抑郁症状和具有RSA不稳定性的支持性育儿，RSA不稳定性是一项任务中RSA变化幅度的动态量度。在两个母亲样本中(N=210)，一个是学龄前儿童(研究1：n=108，法师=30.68岁，SD=6.06,47.0%黑色,43.0％白人）和一个青少年（研究2：n=102，Mage=35.51，SD=6.51，75.2％黑人），在交互任务期间计算RSA不稳定性。在两项研究中，工具性支持性育儿行为与RSA不稳定性呈负相关。研究结果为RSA不稳定性作为母亲生理失调的指标提供了初步支持。
