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Updated: Jun 2, 2026
Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Cardiovascular regulation profile predicts developmental trajectory of BMI and pediatric obesity
Paulo A Graziano1, Susan D Calkins, Susan P Keane
1Department of Psychology, Center for Children and Families, Florida International University, Miami, Florida, USA. pgrazian@fiu.edu
Insights
Poor cardiovascular regulation in early childhood, specifically low respiratory sinus arrhythmia (RSA) suppression, predicts pediatric obesity risk, particularly in African-American children. This highlights autonomic nervous system function as a key factor in childhood weight development.
Area of Science:
- Pediatric Health
- Cardiovascular Physiology
- Autonomic Nervous System Function
Background:
- Pediatric obesity is a growing public health concern with complex developmental origins.
- Cardiovascular regulation, reflecting autonomic nervous system (ANS) activity, plays a role in physiological development.
- Early life physiological markers may predict later health outcomes, including obesity.
Purpose of the Study:
- To investigate the predictive role of early childhood cardiovascular regulation in the development of pediatric obesity.
- To examine the association between respiratory sinus arrhythmia (RSA) and heart period (HP) changes at age 5.5 and body mass index (BMI) trajectories up to age 10.5.
- To explore potential moderating effects of racial status on this association.
Main Methods:
- Longitudinal study of 268 children, assessing cardiovascular regulation (RSA and HP changes) at age 5.5.
- Measured height and weight at ages 5.5, 7.5, and 10.5 to calculate BMI and track growth.
- Statistical analyses examined the relationship between early cardiovascular regulation profiles and later BMI development, including interaction with race.
Main Results:
- Lower levels of RSA suppression and HP change at age 5.5 predicted greater BMI growth and increased risk of overweight/obesity at age 10.5.
- This association was significant specifically for African-American children, indicating a racial interaction.
- An autonomic profile with low parasympathetic activity emerged as a risk factor for pediatric obesity in this subgroup.
Conclusions:
- Early-life autonomic cardiovascular regulation, particularly parasympathetic activity, is a significant predictor of pediatric obesity risk.
- The findings underscore the importance of considering racial disparities in understanding the link between physiological regulation and obesity development.
- Interventions targeting autonomic regulation may be beneficial for preventing pediatric obesity in at-risk populations.
Abstract:
The present study examined the role of cardiovascular regulation in predicting pediatric obesity. Participants for this study included 268 children (141 girls) obtained from a larger ongoing longitudinal study. To assess cardiac vagal regulation, resting measures of respiratory sinus arrhythmia (RSA) and RSA change (vagal withdrawal) to three cognitively challenging tasks were derived when children were 5.5 years of age. Heart period (HP) and HP change (heart rate (HR) acceleration) were also examined. Height and weight measures were collected when children were 5.5, 7.5, and 10.5 years of age. Results indicated that physiological regulation at age 5.5 was predictive of both normal variations in BMI development and pediatric obesity at age 10.5. Specifically, children with a cardiovascular regulation profile characterized by lower levels of RSA suppression and HP change experienced significantly greater levels of BMI growth and were more likely to be classified as overweight/at-risk for overweight at age 10.5 compared to children with a cardiovascular regulation profile characterized by high levels of RSA suppression and HP change. However, a significant interaction with racial status was found suggesting that the association between cardiovascular regulation profile and BMI growth and pediatric obesity was only significant for African-American children. An autonomic cardiovascular regulation profile consisting of low parasympathetic activity represents a significant individual risk factor for the development of pediatric obesity, but only for African-American children. Mechanisms by which early physiological regulation difficulties may contribute to the development of pediatric obesity are discussed.
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