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Updated: May 29, 2025

Assessment of Child Anthropometry in a Large Epidemiologic Study
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Impact of Increasing Levels of Obesity on Functional Capacity and Cardiorespiratory Fitness in Children

Youssef E Ahmed1, Jeremy Wadowski1, Sarita Dhuper1

  • 1Department of Pediatrics, SUNY Downstate Health Sciences University, Brooklyn, NY,USA.

Pediatric Exercise Science
|February 6, 2025
PubMed

Insights

Childhood obesity significantly worsens cardiorespiratory fitness (CRF). Cardiopulmonary exercise testing objectively measures this decline, highlighting fitness as a target for intervention and improved cardiometabolic health.

Area of Science:

  • Pediatric Cardiology
  • Exercise Physiology
  • Obesity Medicine

Background:

  • Childhood obesity is a growing public health concern.
  • Cardiorespiratory fitness (CRF) is a key indicator of cardiometabolic health.
  • Objective assessment of CRF in obese children is crucial for effective management.

Purpose of the Study:

  • To evaluate the impact of increasing childhood obesity severity on CRF.
  • To utilize cardiopulmonary exercise testing (CPET) for objective CRF assessment.
  • To identify CRF as a modifiable target for pediatric obesity interventions.

Main Methods:

  • Retrospective analysis of CPET data from pediatric patients (<21 years).
  • Patients categorized into four body mass index (BMI) percentile classes.
  • CRF assessed by relative peak oxygen consumption (VO2) and metabolic equivalents.

Main Results:

  • Increasing obesity severity correlated with lower relative peak VO2 and metabolic equivalents.
  • Higher adjusted peak VO2 was observed in more severe obesity classes.
  • Elevated resting and recovery heart rates (HRs) and greater HR at anaerobic threshold in the most obese group (Class III).

Conclusions:

  • CRF significantly declines with increasing severity of childhood obesity.
  • CPET provides an objective measure of CRF in pediatric obesity.
  • Improving CRF is an achievable goal with potential for improved cardiometabolic health.
Abstract

Keywords:
METVO2cardiac fitnesspediatric

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