期刊
JOURNAL OF HUMAN KINETICS
卷 47, 期 1, 页码 73-80出版社
SCIENDO
DOI: 10.1515/hukin-2015-0063
关键词
Fat Mass; Fat-Free Mass; Bio-impedance; DXA; physical activity level
This study aimed at comparing BIA and DXA results in assessing body composition in young adults depending on their physical activity level. Eighty healthy 19-30 years old subjects were enrolled and their body composition (Fat Mass and Fat-Free Mass) was assessed by dual-energy X-ray absorptiometry (DXA) and by a newly developed Bioelectrical Impedance Analyzer (BIA - Tanita MC780). A seven-day physical activity level was assessed using a 3-axial accelerometer. DXA-FM% and BIA-FM% were correlated (p < 0.001; r = 0.852; ICC [IC95%]: 0.84 [0.75 -0.90]; concordance coefficient: 0.844). DXA-FFM and BIA FFM were correlated (p < 0.001; r = 0.976; ICC [IC95%]: 0.95 [0.93 - 0.97], concordance coefficient: 0.955). DXA and BIA measurements of FM% and FFM were highly correlated in both boys and girls regardless of the physical activity level. Compared with DXA scans, newly developed bioelectrical impedance analyzers provide satisfactory fat mass and lean mass measures in healthy young women and men, despite their physical activity level.
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