the science that deals with the measurement of the size, weight, and
proportions of the human body.
the amount of fat in the body, expressed either as total fat mass (in kg)
or the fraction (percentage) of total body fat.
energy x-ray asorptiometry (DXA): a relatively new technology
to directly measure body composition. DXA uses two x-ray energies to
measure body fat, muscle, and bone mineral; considered more accurate and
valid than underwater weighing.
also referred to as stature; distance from the crown of the head to the
surface on which the individual is standing; measured when the
child/adolescent is not wearing shoes.
a general term for elevated concentrations of any or all of the lipids in
plasma, e.g., hypercholesterolemia; a risk factor for cardiovascular
a family of compounds that includes triglycerides, phospholipids, and
a diverse class of particles containing varying amounts of
triglycerides, cholesterol, phospholipids, and protein that solubilize
lipids for blood transport.
describes excess body weight; preferred term for describing excess body
weight in children and adolescents.
in a standard normal distribution, the z-score represents the number of
standard deviations away from the population mean. In other words, it
indicates the degree to which an individual's measurement deviates from
what is expected for that individual.