Classification of Obesity Varies between Body Mass Index and Direct Measures of Body Fat in Boys and Girls of Asian and European Ancestry

Autor/inn/en	McConnell-Nzunga, J.; Naylor, P. J.; Macdonald, H.; Rhodes, R. E.; Hofer, S. M.; McKay, H.
Titel	Classification of Obesity Varies between Body Mass Index and Direct Measures of Body Fat in Boys and Girls of Asian and European Ancestry
Quelle	In: Measurement in Physical Education and Exercise Science, 22 (2018) 2, S.154-166 (13 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1091-367X
DOI	10.1080/1091367X.2017.1405809
Schlagwörter	Classification; Obesity; Ethnicity; Body Composition; Gender Differences; Measurement; Radiology; Whites; Age Differences; Comparative Analysis; Indexes; Statistical Analysis; Foreign Countries; Longitudinal Studies; Children; Adolescents; Asians; Multiple Regression Analysis; Canada + Suchen Sie Ihr Suchwort? Classification system; Klassifikation; Klassifikationssystem; Adipositas; Ethnizität; Geschlechterkonflikt; Messverfahren; Radiologie; White; Weißer; Age; Difference; Age difference; Altersunterschied; Indexdatei; Statistische Analyse; Ausland; Longitudinal study; Longitudinal method; Longitudinal methods; Längsschnittuntersuchung; Child; Kind; Kinder; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Asian; Asiat; Asiatin; Asiaten; Asiate; Kanada
Abstract	Body mass index is a common proxy for proportion of body fat. However, body mass index may not classify youth similarly across ages and ethnicities. We used sex- and ethnic-specific receiver operating characteristic curves to determine how obesity classifications compared between body mass index and dual energy x-ray absorptiometry-based body fat percent. Male and female participants 9- to 18-years-old (n = 944; 487 female) were measured 1 to 13 times (1999-2012; 4,411 observations). Body mass index identified < 50% of those classified as obese from body fat percent. Specificity was 99.7%, and sensitivity was 35.8%. Using area under the curve and standard error values, body mass index performed significantly better for: Male versus female at 10 years, Asian versus European female except at 13-, 15-, and 16-years-old, Asian female versus male except at 10- and 15-years-old, and for European male versus female, 9- to 11-years-old (p < 0.05). Our findings provide evidence that users of body mass index should use caution when comparing body mass index across age, sex, and ethnicity. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01