Functional assessment of human nutritional status: Principles and practice
1984
Nutritional assessment can be based on biochemical measurements or biological measurements. In the first case, determinations are made of the nutrients in tissues and fluids which are characterized as static indices. Biological measurement, determinations of nutrient-responsive physiological or behavioral functions, are characterized as functional indices. A number of problems with static measurements have recently emerged. Functional indices of nutritional status have been observed and/or studied since 1913. A systematic classification of these indices of nutritional status is proposed and 2 alternative systems are delineated. The first is a classification based on anatomical or physiological systems. The second classification scheme uses the level or locus of quantitative measurements, e.g., in vivo or in vitro, and the amount and nature of intervention and interaction required for a measurable response. Zn nutriture is used as an example of the use of each classification. (emc)
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