Dyadic Concordance in Mother and Preschooler Resting Cardiovascular Function Varies by Risk Status
Dyadic Concordance in Mother and Preschooler Resting Cardiovascular Function Varies by Risk Status
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DOI：
10.1002/dev.21098
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发表时间：
2014-01-01
影响因子：
2.2
通讯作者：
Loken, Eric
中科院分区：
文献类型：
--
作者：
Creaven, Ann-Marie;Skowron, Elizabeth A.;Loken, Eric
本研究调查了104例虐待儿童（CM）和非CM母亲-学龄前儿童（208例）样本中心率（HR）和呼吸性窦性心律失常（RSA）的一致性。在实验室环境中，在5分钟的休息期内通过心电图同时监测母亲和儿童的心脏生理学。母亲的年龄从20岁到49岁不等;子女的年龄从3岁到5岁不等。观察到母亲HR和儿童HR和RSA的显著二分体内（WD）和二分体间（BD）关联，并且该关联受CM状态的调节。只有CM二联体表现出BD协会：较高的平均产妇HR与较高的儿童HR和较低的儿童RSA。相比之下，当时间间隔被分为30秒的时期，nonCM二人组表现出积极的WD（动态）协会在母亲和孩子的HR，和CM和nonCM二人组表现出负面WD协会在母亲HR和孩子RSA。此外，母亲的平均HR水平缓和了在母亲和孩子中观察到的逐时期WD一致性的程度，使得平均母亲HR升高与WD（动态）一致性的较低水平相关。没有BD或WD一致性在孕产妇和儿童RSA观察。研究结果表明，个体内变异的措施提供了有用的，替代的角度在研究的二元过程中的风险家庭。(c)2013 Wiley Periodicals，Inc. Dev Psychobiol 56：142-152，2014.
This study examined concordance in heart rate (HR) and respiratory sinus arrhythmia (RSA) in a sample of 104 child-maltreating (CM) and nonCM mother-preschooler dyads (208 individuals). In a laboratory setting, mother and child cardiac physiology was simultaneously monitored via ECG in a 5-min resting period. Mothers ranged in age from 20 to 49 years; children ranged in age from 3 to 5 years. Significant within-dyad (WD) and between-dyad (BD) associations were observed for mother HR and both child HR and RSA, and the associations were moderated by CM status. Only CM dyads exhibited BD associations: Higher average maternal HR was associated with higher child HR and lower child RSA. By contrast, when the time interval was divided into 30s epochs, nonCM dyads exhibited positive WD (dynamic) associations in mother and child HR, and both CM and nonCM dyads showed negative WD associations in mother HR and child RSA. Further, mothers' mean HR levels moderated the extent of epoch-by-epoch WD concordance observed in mother and child, such that elevated average maternal HR was associated with lower levels of WD (dynamic) concordance. No BD or WD concordance in maternal and child RSA was observed. The findings suggest that measures of intraindividual variation provide useful, alternate perspectives in the study of dyadic processes in at-risk families. (c) 2013 Wiley Periodicals, Inc. Dev Psychobiol 56: 142-152, 2014.