2.6. Densitometric Parameters
METABOLIC DISEASES
All subjects included in the study had their densitometry parameters assessed before and after the intervention using Hologic Discovery Wi (Bedford, MA, USA) equipment. The BMC and BMD at total body, lumbar spine, and femoral neck and fat mass were evaluated. The assessment was performed at the Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences. During the measurements, the subjects were asked to dress in lightweight clothing and to remove their shoes and any metal objects. Before the measurement, subjects avoided physical activity. The measurement was performed in the supine position and was of approximately 15 min duration. The radiation dose ionizing agent ranged from 0.5 mGy to 0.7 mGy. The intra- and inter-individual coefficients of variation for bone mass were less than 1%.