New Reference Values for Body Composition by Bioelectrical Impedance Analysis in the General Population: Results From the UK Biobank

F.M.E. Franssen*, E.P.A. Rutten, M.T.J. Groenen, L.E. Vanfleteren, E.F.M. Wouters, M.A. Spruit

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


BACKGROUND: Low fat-free mass (FFM) is a risk factor for morbidity and in elderly and patient populations. Therefore, measurement of FFM is nutritional assessment. Bioelectrical impedance analysis (BIA) is a method to assess FFM and FFM index (FFMI; FFM/height2). Although have been established for individuals with normal body weight, no values are available for overweight and obese populations. Also, limited accounted for the age-related decline in FFM. OBJECTIVE: To determine age-specific reference values for abnormal low FFM(I) in white-ethnic women free of self-reported disease from the general population. DESIGN: Biobank is a prospective epidemiological study of the general population United Kingdom. Individuals in the age category 45 to 69 years were addition to body weight, FFM and FFMI were measured using a Tanita BC- Also, self-reported chronic conditions and ethnic background were lung function was assessed using spirometry. RESULTS: After exclusion of individuals with missing data, nonwhite ethnicity, self-reported mass index (BMI) less than 14 or 36 kg/m2 or higher, and/or an function, reference values for FFM and FFMI were derived from 186,975 (45.9% men; age: 56.9 +/- 6.8 years; BMI: 26.5 +/- 3.6 kg/m2; FFMI 18.3 kg/m2). FFM and FFMI were significantly associated with BMI and age. Percentiles 5, 10, 25, 50, 75, 90, and 95 were calculated for FFM, fat mass (index), after stratification for gender, age, and BMI. Using the UK Biobank dataset, new reference values for body composition with BIA were determined in white-ethnic men and women aged 45 to 69 Because these reference values are BMI specific, they are of broad overweight and obese populations.
Original languageEnglish
Article number4480
Pages (from-to)448e1-448e6
JournalJournal of the American Medical Directors Association
Issue number6
Publication statusPublished - 1 Jan 2014

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