title: Total body composition estimated by standing-posture 8-electrode bioelectrical impedance analysis in male wrestlers.
abstract: Standing-posture 8-electrode bioelectrical impedance analysis is a fast and practical method for evaluating body composition in clinical settings, which can be used to estimate percentage body fat (BF%) and skeletal muscle mass in a subject's total body and body segments. In this study, dual-energy X-ray absorptiometry (DXA) was used as a reference method for validating the standing 8-electrode bioelectrical impedance analysis device BC-418 (BIA8, Tanita Corp., Tokyo, Japan). Forty-eight Taiwanese male wrestlers aged from 17.9 to 22.3 years volunteered to participate in this study. The lean soft tissue (LST) and BF% in the total body and body segments were measured in each subject by the BIA8and DXA. The correlation coefficients between total body, arm, leg segments impedance index (BI, ht2/Z) and lean soft tissue mass measured from DXA were r = 0.902, 0.453, 0.885, respectively (p < 0.01). In addition, the total body and segmental LST estimated by the BIA8were highly correlated with the DXA data (r = 0.936, 0.466, 0.886, p < 0.01). The estimation of total body and segmental BF% measured by BIA8and DXA also showed a significant correlation (r > 0.820, p < 0.01). The estimated LST and BF% from BIA8in the total body and body segments were highly correlated with the DXA results, which indicated that the standing-posture 8-electrode bioelectrical impedance analysis may be used to derive reference measures of LST and BF% in Taiwanese male wrestlers.
authors.affiliation: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Division of Histology and Clinical Pathology, Hualien Armed Forced General Hospital, Hualien, Taiwan; Institute of Oral Biology, School of Dentistry, National Yang-Ming University, Taipei, Taiwan; Department of Pathology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; These authors contributed equally.
authors.forename: M-F
authors.initials: MF
authors.lastname: Cheng
authors.affiliation: Department of Combat Sports, National Taiwan University of Physical Education and Sport, Taichung, Taiwan; These authors contributed equally.
authors.forename: Y-Y
authors.initials: YY
authors.lastname: Chen
authors.affiliation: Department of Physical Education, National Taiwan University of Physical Education and Sport, Taichung, Taiwan.
authors.forename: T-R
authors.initials: TR
authors.lastname: Jang
authors.affiliation: Department of Sport Management, National Taiwan University of Physical Education and Sport, Taichung, Taiwan.
authors.forename: W-L
authors.initials: WL
authors.lastname: Lin
authors.affiliation: Department of laboratory medicine, Hualian Armed Forces General Hospital, Hualian, Taiwan.
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.affiliation: Office of Physical Education and Sport, National Chung Hsing University, Taichung, Taiwan.
authors.forename: K-C
authors.initials: KC
authors.lastname: Hsieh
keywords: Absorptiometry; Bioimpedance index; Body composition; Dual energy X-ray; Wrestlers