HKIN 425 Lecture Notes - Lecture 12: Densitometry, Bioelectrical Impedance Analysis, Vital Capacity
Document Summary
Atomic (> 50 elements in the body) oxygen (95% of body), carbon, hydrogen, nitrogen, etc. o o mass o o. Molecular water, protein, minerals, glycogen, and lipid. Body weight = water + protein + mineral + fat. Cellular cells and extracellular fluids and solids. Body weight = body cell mass + extracellular fluid + extracellular solids + fat. Tissue skeletal muscle, viscera, skeleton, adipose, and residual. Body volume and density (underwater weighing, bod pod) The greater the number of components; the greater the potential for measurement. Developed primarily on adults (caucasian males) caution application to chil- dren and adolescents who are chemically immature, females, and other biologic origins. Body weight = fat free mass (ffm) + fat mass (fm) No distinction in ffm of bone, muscle, or viscera. Ffm is partitioned into total-body water (tbw) and fat-free dry mass (ffdm) Body weight = tbw + ffdm + fm.
