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Published on: January 28, 2020
Oxygen uptake efficiency slope in healthy children
Moniek Akkerman1, Marco van Brussel, Bart C Bongers
1Child Development and Exercise Center, Division of Pediatrics, University Children's Hospital and Medical Center, Utrecht, the Netherlands.
The submaximal Oxygen Uptake Efficiency Slope (OUES) is a reliable measure of cardiorespiratory fitness in children. This study found OUES correlates with key exercise metrics and anthropometrics, suggesting its use for assessing ventilation efficiency.
Area of Science:
- Pediatric exercise physiology
- Cardiorespiratory fitness assessment
Background:
- The Oxygen Uptake Efficiency Slope (OUES) is a recognized indicator of cardiorespiratory fitness.
- Understanding OUES in healthy children is crucial for establishing normative data and identifying potential health issues.
Purpose of the Study:
- To characterize the submaximal Oxygen Uptake Efficiency Slope (OUES) in a healthy pediatric population.
- To explore the relationship between submaximal OUES and other cardiorespiratory and anthropometric variables in children.
Main Methods:
- 46 healthy children (aged 7-17 years) underwent bicycle ergometry with gas analysis.
- Measurements included maximal OUES, submaximal OUES, peak oxygen uptake (VO(2)peak), peak minute ventilation (V(E)peak), and ventilatory threshold (VT).
Main Results:
- Submaximal OUES showed high correlations with VO(2)peak, V(E)peak, and VT.
- Significant correlations were also observed between submaximal OUES and basic anthropometric variables.
- OUES demonstrated potential as an objective, independent measure of cardiorespiratory function and ventilation efficiency in children.
Conclusions:
- Submaximal OUES is a valuable metric for assessing cardiorespiratory function in children.
- Recommendations include expressing OUES relative to Body Surface Area (BSA) or Fat Free Mass (FFM) for standardized comparisons.
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