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Title: Measurement of body potassium with a whole-body counter: relationship between lean body mass and resting energy expenditure

Abstract

We conducted studies to determine whether the Mayo whole-body counter could be used to measure body potassium, and thus lean body mass (LBM), and whether moderate obesity alters resting energy expenditure when corrected for LBM. Twenty-four nonobese and 18 moderately obese adults underwent body potassium (40K) counting, as well as tritiated water space measurement and indirect calorimetry. LBM values predicted from 40K counting and tritiated water space measurements were highly correlated (P = 0.001; r = 0.88). Resting energy expenditure was closely related to LBM (P less than 0.0001; r = 0.78): kcal/day = 622 kcal + (LBM.20.0 kcal/kg LBM). In this relationship, the obese subjects did not differ from nonobese subjects. In summary, the Mayo whole-body counter can accurately measure LBM, and moderate obesity has no detectable effect on corrected resting energy expenditure.

Authors:
; ; ;
Publication Date:
Research Org.:
Mayo Clinic, Rochester, MN (USA)
OSTI Identifier:
6758412
Resource Type:
Journal Article
Journal Name:
Mayo Clin., Proc.; (United States)
Additional Journal Information:
Journal Volume: 63:9; Journal Issue: 9
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; POTASSIUM; BODY COMPOSITION; ADIPOSE TISSUE; METABOLISM; REGRESSION ANALYSIS; TRACER TECHNIQUES; TRITIUM COMPOUNDS; WHOLE-BODY COUNTERS; WHOLE-BODY COUNTING; ALKALI METALS; ANIMAL TISSUES; BODY; CONNECTIVE TISSUE; COUNTING TECHNIQUES; ELEMENTS; ISOTOPE APPLICATIONS; LABELLED COMPOUNDS; MATHEMATICS; MEASURING INSTRUMENTS; METALS; RADIATION DETECTORS; STATISTICS; TISSUES; 550201* - Biochemistry- Tracer Techniques

Citation Formats

Jensen, M D, Braun, J S, Vetter, R J, and Marsh, H M. Measurement of body potassium with a whole-body counter: relationship between lean body mass and resting energy expenditure. United States: N. p., 1988. Web. doi:10.1016/S0025-6196(12)62688-3.
Jensen, M D, Braun, J S, Vetter, R J, & Marsh, H M. Measurement of body potassium with a whole-body counter: relationship between lean body mass and resting energy expenditure. United States. https://doi.org/10.1016/S0025-6196(12)62688-3
Jensen, M D, Braun, J S, Vetter, R J, and Marsh, H M. 1988. "Measurement of body potassium with a whole-body counter: relationship between lean body mass and resting energy expenditure". United States. https://doi.org/10.1016/S0025-6196(12)62688-3.
@article{osti_6758412,
title = {Measurement of body potassium with a whole-body counter: relationship between lean body mass and resting energy expenditure},
author = {Jensen, M D and Braun, J S and Vetter, R J and Marsh, H M},
abstractNote = {We conducted studies to determine whether the Mayo whole-body counter could be used to measure body potassium, and thus lean body mass (LBM), and whether moderate obesity alters resting energy expenditure when corrected for LBM. Twenty-four nonobese and 18 moderately obese adults underwent body potassium (40K) counting, as well as tritiated water space measurement and indirect calorimetry. LBM values predicted from 40K counting and tritiated water space measurements were highly correlated (P = 0.001; r = 0.88). Resting energy expenditure was closely related to LBM (P less than 0.0001; r = 0.78): kcal/day = 622 kcal + (LBM.20.0 kcal/kg LBM). In this relationship, the obese subjects did not differ from nonobese subjects. In summary, the Mayo whole-body counter can accurately measure LBM, and moderate obesity has no detectable effect on corrected resting energy expenditure.},
doi = {10.1016/S0025-6196(12)62688-3},
url = {https://www.osti.gov/biblio/6758412}, journal = {Mayo Clin., Proc.; (United States)},
number = 9,
volume = 63:9,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 1988},
month = {Thu Sep 01 00:00:00 EDT 1988}
}