Anthropometric-Arm Radiogrammetric Assessment of Body Composition, Muscularity and Frame Size

摘要

Research involves the validation of the arm x-ray procedure for quantifying total body fat in samples of young and older men and women grouped by fitness category. Tests were completed on 200 subjects. Body fat was determined densitometrically, fatfolds and girths were taken of the right upper arm according to procedures outlined on the Phase 1 report ( ), and fitness was assessed by a treadmill test for maximal oxygen consumption (maxVO2). Subjects were placed into high and low fitness categories based on relative maxVO2. The validity correlations were high between body fat determined from the x-ray and body fat determined from body density in subjects grouped by relative fitness category. New k constants were developed specific to age and fitness. The results extend the usefulness of the arm x-ray procedure for quantifying total body fat in males and females of different ages and relative fitness category. The results are limited to Caucasian subjects; the k constants would not be applicable to subjects who exhibit changes in body composition due to exercise or weight loss.