Document Detail

Total energy expenditure, body composition and weight gain in moderately preterm and full-term infants at term postconceptional age.
MedLine Citation:
PMID:  14696854     Owner:  NLM     Status:  MEDLINE    
AIM: To assess total energy expenditure (TEE) and body composition, i.e. total body water (TBW) and adipose tissue volume (ATV), at term age in 8 healthy preterm infants, born between gestational weeks 30 and 33, and in 9 healthy full-term newborns. METHODS: Total and subcutaneous ATVs were assessed using magnetic resonance imaging, while TEE and TBW were estimated using doubly labelled water. RESULTS: Total ATV was 272 +/- 21 and 261 +/- 56 ml/kg body weight, while subcutaneous ATV was 88.9 +/- 1.6 and 89.7 +/- 2.0% of total ATV for preterm and full-term infants, respectively. The corresponding figures for TBW (as percentage of body weight) were 67.4 +/- 2.5 and 68.1 +/- 4.1, respectively. A significant correlation between ATV/kg body weight and body weight was found for full-term (p < 0.0001) but not for preterm infants. TEE for preterm infants was 315 +/- 20 kJ/kg body weight/24 h, which was significantly higher (p < 0.05) than TEE for full-term infants (254 +/- 45 kJ/kg body weight/24 h). At the time of investigation preterm infants weighed significantly (p < 0.05) less (540 g) than full-term infants. After the time of investigation, weight gains of preterm and full-term infants were 38 +/- 12 and 24 +/- 14 g/24 h, respectively. CONCLUSION: When compared to full-term newborns, predominantly breastfed healthy preterm infants at term postconceptional age were significantly smaller, had a similar average proportion of body fat and showed catch-up growth. Their higher TEE/kg body weight can be explained by a higher growth rate and possibly also by higher physical activity.
E Olhager; E Forsum
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta paediatrica (Oslo, Norway : 1992)     Volume:  92     ISSN:  0803-5253     ISO Abbreviation:  Acta Paediatr.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-12-30     Completed Date:  2004-04-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9205968     Medline TA:  Acta Paediatr     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  1327-34     Citation Subset:  IM    
Department of Molecular and Clinical Medicine, Division of Paediatrics, University of Linköping, University Hospital, Linköping, Sweden.
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MeSH Terms
Adipose Tissue* / metabolism
Body Composition / physiology*
Energy Metabolism / physiology*
Gestational Age
Infant Nutritional Physiological Phenomena
Infant, Newborn
Infant, Premature / physiology*
Magnetic Resonance Imaging
Weight Gain / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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