Document Detail

Developmental trajectories of respiratory sinus arrhythmia and preejection period in middle childhood.
MedLine Citation:
PMID:  20882584     Owner:  NLM     Status:  MEDLINE    
Autonomic nervous system (ANS) activity has been linked repeatedly to children's socioemotional and behavioral adaptive functioning and development, yet the literature on how various indexes of ANS activity develop in childhood is sparse. We utilized latent growth modeling to investigate the development of respiratory sinus arrhythmia (RSA), an established index of parasympathetic nervous system (PNS), and preejection period (PEP), a marker of sympathetic nervous system (SNS) influence on the heart, in children aged 8-10 years. At age 8, 251 children (128 girls, 123 boys; 162 European American, 89 African American) participated. Longitudinal data were collected during two additional waves when children were 9 and 10 years of age, with a 1-year lag between each wave. Children's RSA and PEP exhibited significant stability over time. Marginally significant variability was found among children in how RSA changed over time (slope), but there was no significant interindividual variability in PEP changes over development. A conditional growth curve model (i.e., one with predictor variables) showed that initial levels of RSA and PEP and the slope of RSA over time were predicted by several demographic factors including the child's sex and race; RSA of European American children showed significant increases over time while African American children had higher initial RSA but no significant change over time. Findings extend basic knowledge in developmental biopsychology and have implications for research focusing on ANS measures as important predictors, moderators, and mediators of childhood adaptation.
J Benjamin Hinnant; Lori Elmore-Staton; Mona El-Sheikh
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Developmental psychobiology     Volume:  53     ISSN:  1098-2302     ISO Abbreviation:  Dev Psychobiol     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-17     Completed Date:  2011-03-25     Revised Date:  2014-05-21    
Medline Journal Info:
Nlm Unique ID:  0164074     Medline TA:  Dev Psychobiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  59-68     Citation Subset:  IM    
Copyright Information:
© 2010 Wiley Periodicals, Inc.
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MeSH Terms
Adaptation, Physiological / physiology
Arrhythmia, Sinus / physiopathology*
Cardiography, Impedance
Child Development / physiology
Heart / growth & development,  physiopathology*
Heart Rate / physiology
Parasympathetic Nervous System / physiology
Grant Support

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