Body cell mass index in children: interpretation of total body potassium results

The British Journal of Nutrition
Alexia J Murphy, Peter S W Davies

Abstract

Body cell mass (BCM) is a valuable measure of functional nutritional status in children. As BCM is related to body size, it is essential that BCM is adjusted for stature when interpreting BCM data in children. Our aim was to examine the relationship between height and BCM in healthy children to determine the power by which height should be raised to adjust BCM for stature. This cross-sectional study calculated BCM by 40K counting in 146 healthy children aged between 5 and 18 years. The relationship between BCM and height was explored using log-log regression. The present results demonstrate that the power by which height should be raised to adjust for BCM in females is 2.39 (se 0.09) and for males is 2.92 (se 0.10). A simplified sex-specific version of the index, BCM/height2.5 for females and BCM/height3 for males, was found to be statistically valid and numerically convenient, with the proportion of variation that could be attributed to height being less than 2 %. The present study shows that there is a difference in the relationship between height and BCM for males and females and that BCM can be adjusted in children using the BCM index of BCM/height2.5 for females and BCM/height3 for males.

References

May 1, 1975·Clinical Science and Molecular Medicine·C J EdmondsT Smith
Dec 1, 1990·The American Journal of Clinical Nutrition·T B VanItallieR A Boileau
Jul 28, 2004·The American Journal of Clinical Nutrition·Jonathan C K WellsPeter S W Davies
Jan 10, 2006·The American Journal of Clinical Nutrition·Alexia J MurphyDavid K Webb

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Citations

Oct 9, 2008·The British Journal of Nutrition·Alexia J MurphyPeter S W Davies
Dec 12, 2013·European Journal of Clinical Nutrition·A J MurphyC Slater
Apr 23, 2014·Liver Transplantation : Official Publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society·Looi Cheng EeGeoffrey John Cleghorn
Jun 13, 2016·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·Alexia J MurphyPeter S W Davies
Apr 26, 2016·PloS One·Evgenia I TolstykhBruce A Napier
Mar 21, 2017·Journal of Nutrigenetics and Nutrigenomics·Laura BordoniRosita Gabbianelli
Aug 14, 2015·The American Journal of Clinical Nutrition·Alexia J MurphyPeter Sw Davies
May 21, 2010·The American Journal of Clinical Nutrition·Alexia J MurphyPeter S W Davies
Dec 4, 2012·Journal of Pediatric Gastroenterology and Nutrition·Rebecca J Hill, Peter S W Davies

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