A metabolic nitrogen balance study for 40 d and evaluation of the menstrual cycle on protein requirement in young Nigerian women.
A long-term N balance study was carried out to determine the adequacy of an estimated protein requirement level recommended for young healthy Nigerian women and the effect of the menstrual cycle on the requirement.
Eleven healthy young women, 25 (SD 2.6) years, were fed on a diet providing 0.6 g protein (Nx6.25)/kg per d and an average energy intake of 0.17 (SD 0.012) MJ/kg per d. Urine, faeces, sweat and menstrual fluids were collected for estimation of N balance.
Menstrual N loss varied among individuals ranging from 46 to 124 mg N/d with an average of 89 (SD 21.8) mg N/d. Individual N balance was found to vary according to the day of the menstrual cycle.
Positive N balances were recorded at about ovulation while negative balances were observed just before the onset of menstruation.
Mots-clés Pascal : Homme, Femelle, Régime alimentaire, Alimentation, Protéine, Niger, Afrique, Besoin nutritif, Azote, Cycle menstruel
Mots-clés Pascal anglais : Human, Female, Diet, Feeding, Proteins, Niger, Africa, Nutrient requirement, Nitrogen, Menstrual cycle
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0053549
Code Inist : 002B29B. Création : 199406.