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Energy metabolism in infants and children
1Childhood Nutrition Research Centre, Institute of Child Health, London, UK.
Insights
Understanding energy metabolism is crucial for pediatricians. This study reviews key methods for measuring energy expenditure in children, from birth through adolescence.
Area of Science:
- Pediatrics
- Human Physiology
- Nutritional Science
Background:
- Energy is essential for all bodily functions and physiological processes.
- Individual energy requirements fluctuate due to various factors.
- Accurate assessment of energy metabolism is vital in pediatric care.
Purpose of the Study:
- To discuss the importance of energy metabolism in pediatrics.
- To review available techniques for measuring energy expenditure in children.
- To provide an overview of the theory and practical applications of energy metabolism measurement methods.
Main Methods:
- Classical indirect calorimetry
- Doubly labeled water method
- Bicarbonate method
- Heart rate monitoring
Main Results:
- Various techniques exist for short- and long-term energy expenditure measurement.
- These methods are applicable to infants, children, and adolescents.
- The study details the principles and practicalities of each technique.
Conclusions:
- Pediatricians need to understand energy metabolism and its measurement.
- A range of validated techniques are available for assessing energy expenditure across pediatric age groups.
- Knowledge of these methods aids in managing children's nutritional and metabolic health.
Abstract:
Energy is used continuously in the body and is fundamental to physiologic processes. Requirements of individuals vary in relation to a wide variety of factors, making energy metabolism an issue of great importance to the pediatrician. Techniques are available for short- and long-term measurements of energy expenditure, which serve different purposes. The principal techniques are suitable for the age range from birth to adolescence. The theory of energy metabolism is briefly discussed, including a summary of the different working definitions. The principles and practicalities of classical indirect calorimetry, the doubly labeled water method, the bicarbonate method, and heart rate monitoring are then described.