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Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges
Published on: February 25, 2016
Latent profiles of children's autonomic nervous system reactivity early in life predict later externalizing problems
Danielle Roubinov1, Jenn-Yun Tein2, Katherine Kogut3
1Department of Psychiatry, University of California, San Francisco, CA, USA.
Insights
Children
Area of Science:
- Developmental psychology
- Autonomic nervous system research
- Childhood behavior studies
Background:
- Previous research links autonomic nervous system (ANS) reactivity to externalizing behaviors in children.
- Developmental changes in stress response systems are often overlooked in this context.
- Longitudinal studies are crucial for understanding physiological risk factors for behavior problems.
Purpose of the Study:
- To identify developmental trajectories of parasympathetic nervous system (PNS) and sympathetic nervous system (SNS) reactivity.
- To examine the association between these ANS reactivity profiles and externalizing behavior problems in early childhood.
- To investigate the role of ANS development in predicting later behavioral outcomes.
Main Methods:
- Growth mixture modeling was used to derive profiles of respiratory sinus arrhythmia (RSA) for PNS reactivity.
- Pre-ejection period (PEP) was used to derive profiles of sympathetic nervous system (SNS) reactivity.
- Data were collected from a cohort of 383 low-income, primarily Mexican American children from infancy to age 7.
Main Results:
- Two RSA reactivity profiles (reactive decreasing, U-shaped) and three PEP reactivity profiles (blunted/anticipatory, reactive decreasing, non-reactive increasing) were identified.
- U-shaped RSA reactivity showed a non-significant trend towards higher externalizing problems.
- Blunted/anticipatory PEP reactivity was significantly associated with higher externalizing problems, particularly in males.
Conclusions:
- Developmental trajectories of ANS reactivity, specifically PEP, are linked to externalizing behavior problems.
- A longitudinal approach is valuable for understanding how physiological development influences behavioral outcomes.
- Findings highlight the importance of considering sex differences in ANS reactivity profiles and behavior.
Abstract:
Prior researchers have observed relations between children's autonomic nervous system reactivity and externalizing behavior problems, but rarely considers the role of developmentally regulated changes in children's stress response systems. Using growth mixture modeling, the present study derived profiles of parasympathetic nervous system reactivity (as indicated by respiratory sinus arrhythmia (RSA)) and sympathetic nervous system reactivity (as indicated by pre-ejection period (PEP)) from low income, primarily Mexican American children measured repeatedly from infancy through age 5 (N = 383) and investigated whether profiles were associated with externalizing problems at age 7. Analyses identified two profiles of RSA reactivity (reactive decreasing and U-shaped reactivity) and three profiles of PEP reactivity (blunted/anticipatory reactivity, reactive decreasing, non-reactive increasing). Compared to children with an RSA profile of reactive decreasing, those with an RSA profile of U-shaped reactivity had marginally higher externalizing problems, however, this difference was not statistically significant. Children who demonstrated a profile of blunted/anticipatory PEP reactivity had significantly higher externalizing problems compared to those with a profile of non-reactive increasing, likely related to the predominantly male composition of the former profile and predominantly female composition of the latter profile. Findings contribute to our understanding of developmental trajectories of ANS reactivity and highlight the utility of a longitudinal framework for understanding the effects of physiological risk factors on later behavior problems.
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