title: Accuracy of segmental bioelectrical impedance analysis for predicting body composition in pre- and postmenopausal women.
abstract: This study aimed to compare the accuracy for predicting body composition using single-frequent segmental bioelectrical impedance analysis (BIA) between pre- and postmenopausal women. A total f 559 Japanese women aged 30-88yr were divided into 4 groups by questionnaire: natural menopause, pathological menopause, regular menstruation, or irregular menstruation. The measurement values by dual-energy X-ray absorptiometry were used as a reference of the body composition. In terms of the results, regardless of the menopausal status, BIA slightly but significantly overestimated the percentage of body fat (standard error of estimate: 5.3%-6.7%) and the leg lean soft tissue mass (LSTM; 5.1%-6.1%), and underestimated the LSTM in the whole body (6.2%-7.6%) and arm (2.8%-3.7%). The absolute values of the predictive error for leg LSTM were significantly higher in postmenopausal groups than in the premenopausal ones. The corresponding values for the whole body and arm LSTM, and the percentage of body fat were higher in premenopausal groups than in postmenopausal ones. In conclusion, the predictive accuracy of BIA for postmenopausal women is not inferior to that for premenopausal ones, unless we target the leg LSTM.
authors.affiliation: Division of Health Promotion and Exercise, National Institute of Health and Nutrition, Shinjuku-ku, Tokyo, Japan. Electronic address: tanaka-n@nih.go.jp.
authors.forename: Noriko I
authors.initials: NI
authors.lastname: Tanaka
authors.affiliation: College of Sport and Health Science, Ritsumeikan University, Kusatsu-shi, Shiga, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Hanawa
authors.affiliation: Division of Health Promotion and Exercise, National Institute of Health and Nutrition, Shinjuku-ku, Tokyo, Japan.
authors.forename: Haruka
authors.initials: H
authors.lastname: Murakami
authors.affiliation: Faculty of Sport Sciences, Waseda University, Tokorozawa-shi, Saitama, Japan.
authors.forename: Zhen-Bo
authors.initials: ZB
authors.lastname: Cao
authors.affiliation: Faculty of Biology-Oriented Science and Technology, Kinki University, Kinokawa-shi, Wakayama, Japan.
authors.forename: Michiya
authors.initials: M
authors.lastname: Tanimoto
authors.affiliation: College of Sport and Health Science, Ritsumeikan University, Kusatsu-shi, Shiga, Japan.
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Sanada
authors.affiliation: Division of Health Promotion and Exercise, National Institute of Health and Nutrition, Shinjuku-ku, Tokyo, Japan.
authors.forename: Motohiko
authors.initials: M
authors.lastname: Miyachi
mesh_terms: D015502:Absorptiometry, Photon; D000273:Adipose Tissue / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001823:Body Composition; D017097:Electric Impedance; D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D017698:Postmenopause; D017697:Premenopause; D015203:Reproducibility of Results
keywords: Bioelectrical impedance analysis; body composition; dual-energy X-ray absorptiometry; estimation; menopause