Energy expenditure, energy balance, and composition of weight gain in low birth weight infants fed diets of different protein and energy content
| Autor: | Rajasekhar Ramakrishnan, Mark Stefanski, Ralph B. Dell, Julia Masterson, Regina Spinnazola, William C. Heird, Karl F Schulze |
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| Rok vydání: | 1987 |
| Předmět: |
business.industry
Body Weight Energy balance Infant Newborn Absolute rate Infant Low Birth Weight Low birth weight Energy expenditure Pediatrics Perinatology and Child Health medicine Energy density Humans Composition (visual arts) Energy intakes Infant Food Food science Dietary Proteins medicine.symptom business Energy Intake Energy Metabolism Infant Nutritional Physiological Phenomena Weight gain |
| Zdroj: | The Journal of pediatrics. 110(5) |
| ISSN: | 0022-3476 |
| Popis: | The effect of energy and protein intakes on energy expenditure, energy balance, and amount and relative rate of both protein and fat deposition in new tissue was investigated in 19 low birth weight infants whose mean protein and energy intakes, respectively, were 2.24 g/kg/d and 113 kcal/kg/d (formula A, n = 8), 3.6 g/kg/d and 115 kcal/kg/d (formula B, n = 5), and 3.5 g/kg/d and 149 kcal/kg/d (formula C, n = 6). The higher energy intake (formula C) but not the higher protein intake (formula B) resulted in greater energy expenditure. Both the higher protein (formula B vs formula A) and higher energy intakes (formula C vs formula B) resulted in greater weight gain secondary, in group B, to a greater absolute rate of protein deposition and, in group C, to a greater absolute rate of fat deposition. The relative composition of the new tissue deposited reflected the proportional intakes of protein and energy. The numerical value of the protein/fat ratio (g/g) of the new tissue deposited by infants fed formulas A and C, the protein contents of which were low relative to energy contents, were similar and significantly lower than the numerical value of the protein/fat ratio of the new tissue deposited by infants fed formula B, which had a higher protein content relative to energy content. These findings suggest that the composition of weight gain is related to both the absolute amounts and the proportions of dietary protein and energy; thus, both must be considered in formulation of nutritional regimens for LBW infants. |
| Databáze: | OpenAIRE |
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