Assessment of body @entity1386 in XXXX : evaluation of laboratory and anthropometric techniques.

@entity1 @entity1386 @entity28
The identification of @entity28 as a pathological diagnosis depends on an accurate assessment of body @entity1386 and a correlation of @entity1386 with pathological consequences. Because total body fat varies with body weight, the proportion of body weight that is fat is probably a more reliable indicator of risk. Among @entity28 @entity1 and adolescents, several problems have hindered the development of accurate clinical measures of percent body fat and total body fat. First, the use of direct methods to measure body composition is limited by expense and labor. Second, the relationship between anthropometric indexes and body composition in @entity28 @entity1 and adolescents has not been intensively studied. Third, sample sizes of normal weight @entity1 have been too small to permit the development of diagnostic criteria. Fourth, the triceps skinfold is less reproducible in overweight subjects. Increases in lean body mass in @entity28 adolescents may confound the use of the body mass index as a measure of adiposity. Current laboratory methods for the measurement of body composition include: (1) underwater weighing, (2) 40K counting, (3) isotopic dilution measures, (4) neutron activation, and (5) electrical impedance. This article examines relationships between those methods and anthropometry in the measurement of @entity1386 in @entity1 and adolescents, as well as the difficulties in measuring body @entity1386 and the importance of body fat distribution and its relationship to morbidity in @entity1 . Current evidence suggests an association of morbidity and upper segment @entity28 in adults. Corresponding studies in @entity1 and adolescents are yet to be carried out.
