Infant Vagal Tone and Maternal Depressive Symptoms: A Bottom-Up Perspective
Infant Vagal Tone and Maternal Depressive Symptoms: A Bottom-Up Perspective
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DOI：
10.1080/15374416.2019.1622122
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发表时间：
2019-06-21
影响因子：
4.2
通讯作者：
Luecken, Linda J.
中科院分区：
文献类型：
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作者：
Somers, Jennifer A.;Curci, Sarah G.;Luecken, Linda J.
儿童对母亲抑郁等环境暴露的易感性各不相同，但人们对儿童如何塑造同样的环境知之甚少。在低唤醒的情况下抚养婴儿时，有抑郁风险的母亲可能会经历父母教养自我效能的降低和抑郁症状的增加。我们评估了一个纵向中介调节模型，该模型假设婴儿迷走神经张力(以呼吸性窦性心律失常[RSA]为指标)和母亲产后抑郁(PPD)症状通过父母养育自我效能对儿童早期母亲抑郁症状的交互作用。在322名极低收入的墨西哥裔美国母婴(46%为男婴)的样本中，婴儿RSA在6周大时被评估；母亲(M年龄=27.8，SD=6.5)在6周至6个月期间每3周报告PPD症状，在18和24个月时报告父母的自我效能，在18和36个月时报告抑郁症状。较高的产后抑郁症状预示着36个月后母亲抑郁症状的增加，特别是在婴儿静息RSA较低的母亲中。PPD症状和婴儿RSA对36个月抑郁症状的交互作用部分是通过较低的父母教养自我效能感来实现的。较低的婴儿RSA可能会损害母亲对其有效育儿能力的信念，从而加剧PPD症状对随后母亲健康的有害影响。
Children vary in their susceptibility to environmental exposures such as maternal depression, but little is known about how children shape those same environments. When raising an infant with low arousal, mothers at risk of depression may experience decreased parenting self-efficacy and increased depressive symptoms. We evaluated a longitudinal mediated moderation model that hypothesized interactive effects of infant vagal tone (indexed by respiratory sinus arrhythmia [RSA]) and maternal postpartum depressive (PPD) symptoms on maternal depressive symptoms in early childhood via parenting self-efficacy. Among a sample of 322 very low-income Mexican American mother-infant dyads (46% male infants), infant RSA was assessed at 6 weeks of age; mothers (M-age = 27.8, SD = 6.5) reported PPD symptoms every 3 weeks from 6 weeks to 6 months, parenting self-efficacy at 18 and 24 months, and depressive symptoms at 18 and 36 months. Higher PPD symptoms predicted higher maternal depressive symptoms at 36 months, especially among mothers whose infants had lower resting RSA. The interactive effect of PPD symptoms and infant RSA on 36-month depressive symptoms was partially mediated by lower parenting self-efficacy. Lower infant RSA may exacerbate the detrimental effects of PPD symptoms on subsequent maternal well-being via damage to mothers' beliefs in their ability to parent effectively.