Total-body skeletal muscle mass: evaluation of 24-h urinary creatinine excretion by computerized axial tomography
ZM Wang, D Gallagher, ME Nelson… - The American journal of …, 1996 - Elsevier
ABSTRACT A classic body-composition method is estimation of total-body skeletal muscle
mass (SM, in kg) from 24-h urinary creatinine excretion (in g). Two approaches of unknown
validity have been used to calculate SM from creatinine: one assumes a constant ratio of SM
to creatinine, the so-called creatinine equivalence (k), and that SM= kx creatinine; the other
suggests a highly variable ratio of SM to creatinine and is based on regression equations of
the form SM= b+ ax creatinine. We explored these two extreme possibilities by measuring …
mass (SM, in kg) from 24-h urinary creatinine excretion (in g). Two approaches of unknown
validity have been used to calculate SM from creatinine: one assumes a constant ratio of SM
to creatinine, the so-called creatinine equivalence (k), and that SM= kx creatinine; the other
suggests a highly variable ratio of SM to creatinine and is based on regression equations of
the form SM= b+ ax creatinine. We explored these two extreme possibilities by measuring …
