title: Comparison of Standing Posture Bioelectrical Impedance Analysis with DXA for Body Composition in a Large, Healthy Chinese Population.
abstract: Bioelectrical impedance analysis (BIA) is a common method for assessing body composition in research and clinical trials. BIA is convenient but when compared with other reference methods, the results have been inconclusive. The level of obesity degree in subjects is considered to be an important factor affecting the accuracy of the measurements. A total of 711 participants were recruited in Taiwan and were sub-grouped by gender and levels of adiposity. Regression analysis and Bland-Altman analysis were used to evaluate the agreement of the measured body fat percentage (BF%) between BIA and DXA. The BF% measured by the DXA and BIA methods (Tanita BC-418) were expressed as BF%DXA and BF%BIA8, respectively. A one-way ANOVA was used to test the differences in BF% measurements by gender and levels of adiposity. The estimated BF%BIA8 and BF%DXA in the all subjects, male and female groups were all highly correlated (r = 0.934, 0.901, 0.916, all P< 0.001). The average estimated BF%BIA8 (22.54 ± 9.48%) was significantly lower than the average BF%DXA (26.26 ± 11.18%). The BF%BIA8 was overestimated in the male subgroup (BF%DXA< 15%), compared to BF%DXA by 0.45%, respectively. In the other subgroups, the BF%BIA8 values were all underestimated. Standing BIA estimating body fat percentage in Chinese participants have a high correlation, but underestimated on normal and high obesity degree in both male and female subjects.
authors.affiliation: Department of Applied Math, National Chung Hsing University, Taichung, Taiwan.
authors.forename: Kuen-Tsann
authors.initials: KT
authors.lastname: Chen
authors.affiliation: Department of Physical Education, National Taiwan University of Sport, Taichung, Taiwan.|Department of Cosmetic Application & Management, St. Mary's Junior College of Medicine, Nursing and Management, Ilan, Taiwan.
authors.forename: Yu-Yawn
authors.initials: YY
authors.lastname: Chen
authors.affiliation: Department of Applied Math, National Chung Hsing University, Taichung, Taiwan.
authors.forename: Chia-Wei
authors.initials: CW
authors.lastname: Wang
authors.affiliation: Department of Radiology, Jen-Ai Hospital, Taichung, Taiwan.
authors.forename: Chih-Lin
authors.initials: CL
authors.lastname: Chuang
authors.affiliation: Department of Hospitality, Recreation, and Tourism Management, East Stroudsburg University, Pennsylvania, United States of America.
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Chiang
authors.affiliation: Department of Physical Medicine and Rehab, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan.
authors.forename: Chung-Liang
authors.initials: CL
authors.lastname: Lai
authors.affiliation: Sport Science Research Center, National Taiwan University of Sport, Taichung, Taiwan.
authors.forename: Hsueh-Kuan
authors.initials: HK
authors.lastname: Lu
authors.affiliation: Department of Exercise Science, East Stroudsburg University, Pennsylvania, United States of America.
authors.forename: Gregory B
authors.initials: GB
authors.lastname: Dwyer
authors.affiliation: Department of Exercise Health Science, National Taiwan University of Sport, Taichung, Taiwan.
authors.forename: Shu-Ping
authors.initials: SP
authors.lastname: Chao
authors.affiliation: Department of Food and Beverage management, National Kaohsiung University of Hospitality and Tourism, Kaohsiung, Taiwan.
authors.forename: Ming-Kuei
authors.initials: MK
authors.lastname: Shih
authors.affiliation: Fundamental Education Center, National Chin-Yi University of Technology, Taichung, Taiwan.|Research Center, Charder Electronic Co., Ltd, Taicung, Taiwan.
authors.forename: Kuen-Chang
authors.initials: KC
authors.lastname: Hsieh
mesh_terms: D015502:Absorptiometry, Photon; D001823:Body Composition; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D013624:Taiwan