Total body potassium in aging humans: A longitudinal study

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · American Journal of Clinical Nutrition; (USA)

OSTI ID:5161527

Flynn, M A; Nolph, G B; Baker, A S; Martin, W M; Krause, G ^[1]

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1. Univ. of Missouri-Columbia (USA)

Total body potassium (TBK) data calculated from longitudinal measurements over 18 y of 40K by whole-body counting of 564 male and 61 female healthy humans in a 2-pi liquid scintillation counter show little change in females younger than 50 y compared with males of those ages. Males show less TBK from 41 y onward as they age, with most rapid rate of loss between 41 and 60 y. Females have a rapid loss of TBK when they are older than 60 y; the loss is at a greater rate than that of males. Percent total body fat calculated from total body weight and lean body mass (LBM) derived from TBK document greater adiposity in females at all ages except ages 51-60 y when females are similar to males in change in percent fat per year per centimeter.

• OSTI ID: 5161527
• Journal Information: American Journal of Clinical Nutrition; (USA), Journal Name: American Journal of Clinical Nutrition; (USA) Vol. 50:4; ISSN 0002-9165; ISSN AJCNA
• Country of Publication: United States
• Language: English

Related Subjects

550201* -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ADIPOSE TISSUE
AGE DEPENDENCE
ALKALI METAL ISOTOPES
ALKALI METALS
ANIMAL TISSUES
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BODY
BODY COMPOSITION
CONNECTIVE TISSUE
COUNTING TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAMMALS
MAN
METALS
NUCLEI
ODD-ODD NUCLEI
POTASSIUM
POTASSIUM 40
POTASSIUM ISOTOPES
PRIMATES
RADIOISOTOPES
SCINTILLATION COUNTING
TISSUES
VERTEBRATES
WHOLE-BODY COUNTING
YEARS LIVIN