Dietary Protein Requirement of Men >65 Years Old Determined by the Indicator Amino Acid Oxidation Technique Is Higher than the Current Estimated Average Requirement | Zendy

Mahroukh Rafii | Zendy; Karen Chapman | Zendy; Rajavel Elango | Zendy; W. W. Campbell | Zendy; Ronald O. Ball | Zendy; Paul B. Pencharz | Zendy; Glenda CourtneyMartin | Zendy

Open Access

Dietary Protein Requirement of Men >65 Years Old Determined by the Indicator Amino Acid Oxidation Technique Is Higher than the Current Estimated Average Requirement

Author(s) -

Mahroukh Rafii,

Karen Chapman,

Rajavel Elango,

W. W. Campbell,

Ronald O. Ball,

Paul B. Pencharz,

Glenda CourtneyMartin

Publication year - 2016

Publication title -

journal of nutrition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.463

H-Index - 265

eISSN - 1541-6100

pISSN - 0022-3166

DOI - 10.3945/jn.115.225631

Subject(s) - nitrogen balance , phenylalanine , amino acid , zoology , linear regression , protein requirement , energy requirement , resting energy expenditure , dietary reference intake , chemistry , nitrogen , energy metabolism , biology , endocrinology , regression , biochemistry , nutrient , mathematics , statistics , body weight , organic chemistry

The current estimated average requirement (EAR) and RDA for protein of 0.66 and 0.8 g ⋅ kg-1 ⋅ d-1, respectively, for adults, including older men, are based on nitrogen balance data analyzed by monolinear regression. Recent studies in young men and older women that used the indicator amino acid oxidation (IAAO) technique suggest that those values may be too low. This observation is supported by 2-phase linear crossover analysis of the nitrogen balance data.

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