[A new alternative for estimating recommendations of protein intake in @entity1 . Protein requirements of an adult population fed with a diet based on XXXX and beans].

@entity1 @entity1522 @entity1568 @entity535 @entity6778 @entity579 @entity26687
This paper proposes a new approach to estimate the protein needs of a population; recommendations are also made on the protein intake of adults fed diets based on @entity579 and beans. For this purpose, the @entity1568 balance data previously reported for 40 adult @entity1 subjects who had participated in 160 @entity1568 balance periods fed diets based on @entity579 and beans, with and without animal protein and/or energy supplementation were used. The proposed method is based on the curvilinear response between @entity1568 intake and its @entity1568 balance. The second degree equation describing the relationship between @entity1568 balance and intake is calculated. Using the mathematical concept of the first and second derivatives, the point of inflexion is obtained, and interpreted as that condition wherein the individual utilizes with maximum efficacy the ingested @entity1568 ; @entity1568 ingestion, which corresponds to that point, is therefore taken as the dietary @entity1568 recommendation for the individual. When the values obtained by means of the quadratic equation are compared to those obtained by the traditional linear equation, values were found to be statistically equal (p less than 0.05) for both calculation methods. The recommended protein intake of an adult population fed a diet based on @entity579 and beans was 0.80 and 0.77 g/kg/day for the quadratic approach, and for the conventional method, respectively. When this diet was supplemented with 10% milk protein and with the same energy level, the calculated values were 0.64 and 0.71 g protein/kg/day for both methods, in this same order. The essential @entity535 intake and absorption values were also calculated from the protein levels recommended by both methods to be in @entity1568 balance, from a diet based on @entity579 and beans. Findings revealed, in all cases, that the intakes of each and all essential @entity1522 met those levels indicated by FAO/WHO, with the exception of @entity6778 and the @entity26687 -containing @entity1522 , which apparently limit the quality of the diet.
