Total body potassium in aging humans: A longitudinal study

Journal Article · Sun Oct 01 00:00:00 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), Vol. 50:4; ISSN 0002-9165
• Country of Publication: United States
• Language: English

Related Subjects

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