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close this bookActivity, Energy Expenditure and Energy Requirements of Infants and Children (International Dietary Energy Consultative Group - IDECG, 1989, 412 pages)
close this folderBasal metabolism of infants
View the document(introductory text...)
View the documentAbstract
View the document1. Historical work
View the document2. Basal metabolism defined
View the document3. Factors which may influence basal metabolism
View the document4. Normative standards
View the documentAcknowledgments
View the documentReferences
View the documentDiscussion (summarized by B. Schürch)

Discussion (summarized by B. Schürch)

The BMR of a 3-year-old child is more than 50% of an adult's, yet its weight is only around 20% of an adult's; can all of this be explained in terms of organ growth? The question cannot be answered definitively, but the fact that, in young animals, muscle has a higher BMR per weight than in old animals would suggest that other factors play a role as well.

Changes in sleeping metabolic rate occur a few minutes before the change in sleep state (REM, non-REM); hormonal changes seem to be responsible for this phenomenon.

In Butte's studies, infants with a higher sleeping metabolic rate generally also had higher activity scores.

The SMR of an infant can be altered by 50% by ambient temperature; controlling ambient temperature is therefore important in the measurement of sleeping metabolic rate in infants.