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Free-living energy expenditure and behaviour in late infancy

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jun 1997 Australia Publisher:BMJJournal:Archives of Disease in Childhood, volume 76, pages 490-494 (issn: 0003-9888, eissn: 1468-2044,

Authors: Wells, J.C.K.; Hinds, A.; Davies, P.S.W.;

doi: 10.1136/adc.76.6.490

pmid: 9245844

pmc: PMC1717215

Free-living energy expenditure and behaviour in late infancy

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Abstract

The energy requirements of infants are determined by body size, growth rate, and physical activity. Little is known of the determinants of energy expended on activity. The relation between free-living energy expenditure and behaviour was investigated in infants aged 9 and 12 months.Total energy expenditure (TEE) was estimated by the doubly labelled water method and fat free mass was estimated from the 18O dilution space. Behaviour was assessed by two 24 hour activity diaries.Thirty four normal healthy infants.TEE was negatively related to the time spent feeding and negatively related to the time spent upset. Body size, represented by fat free mass, accounted for only 19% of the variation in TEE, whereas the combination of fat free mass and two behavioural variables explained 46% of the variation in TEE.Behaviour contributed significantly to TEE. The energy requirements of individual subjects in this age group cannot be predicted with accuracy from body size alone.

Country

Australia

Related Organizations

University of Queensland
Australia
University of Queensland
Australia
Queensland University of Technology
Australia

Keywords

Male, Physical Exertion, Preterm Infants, Energy Requirements, (H2O)-H-2-O-18 Method, Indirect Calorimetry, Humans, Fat Free Mass, Children, Anthropometry, Infant, Feeding Behavior, Doubly-labeled-water, Body-composition, Infant Behavior, Birth, 1114 Paediatrics and Reproductive Medicine, Body Constitution, Physical-activity, 1111 Nutrition and Dietetics, Female, Energy Metabolism

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