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Total energy expend...
Total energy expenditure, body composition and weight gain in moderately preterm and full-term infants at term postconceptional age
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- Olhager, Elisabeth, 1961- (författare)
- Linköpings universitet,Pediatrik,Hälsouniversitetet
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- Forsum, Elisabet, 1947- (författare)
- Linköpings universitet,Nutrition,Hälsouniversitetet
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(creator_code:org_t)
- 2003
- 2003
- Engelska.
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Ingår i: Acta Paediatrica. - 0803-5253 .- 1651-2227. ; 92:11, s. 1327-1334
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- 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.
Nyckelord
- MEDICINE
- MEDICIN
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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