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Excess energy and nitrogen balance at protein intakes above the requirement level in young men
- Source :
- The American journal of clinical nutrition. 48(4)
- Publication Year :
- 1988
-
Abstract
- Effects ofexcess energy on nitrogen balance at above the safe level of protein intake were studied in six young men. They were given test diets with a fixed protein intake of 1.2 g. kg' . d' but with three successive energy (E) levels: at maintenance (1 .0 E), 15% above maintenance (1 . 15 E) and 30% above maintenance (1 .3 E), both in ascending (1 .0 E, 1. 15 E, 1.3 E) and descending (1.3 E, 1. 15 E, 1.0 E) sequences. Duration of each dietary period was 10 d. N balance increased from 7.2 to 23.8 to 33.3 mg N. kg1 . d' in the ascending series and decreased from 27.8 to 17.6 to 4.8 mg N. kg1 . d' in the descending series. The changes in N balance per 100 kcal change in energy intake ranged between 144 and 243 mg with smaller changes at higher energy levels. Biological value and net protein utilization ofthe dietary pro- tein were positively correlated with energy intake in both the ascending series and the descend- ing series (p < 0.00 1). Am J C/in Nuir 1988;48: 1015-22.
- Subjects :
- Adult
Male
Nitrogen balance
medicine.medical_specialty
Calorie
Net protein utilization
Nitrogen
Medicine (miscellaneous)
Body weight
Blood Urea Nitrogen
chemistry.chemical_compound
Feces
Animal science
Internal medicine
medicine
Humans
Nutrition and Dietetics
Chemistry
Body Weight
Nutritional Requirements
Proteins
Biological value
Protein intake
Creatine
Endocrinology
High calorie diet
Dietary Proteins
Energy Intake
Energy Metabolism
Excess energy
Subjects
Details
- ISSN :
- 00029165
- Volume :
- 48
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- The American journal of clinical nutrition
- Accession number :
- edsair.doi.dedup.....4f595b3107a3c4274b74e278af3d09b7