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Revista argentina de antropología biológica

On-line version ISSN 1514-7991


MARTINEZ, Jorge Ivan et al. Body fat variation by anthropometry and bioimpedance in Jujenean school children. Rev Arg Antrop Biol [online]. 2018, vol.20, n.1, pp.1-8. ISSN 1514-7991.

The objective of the present study is to compare different methods of calculating body fat percentage (BF%) by anthropometry and bioimpedance (BIA) in an infant-juvenile population, and to analyze the variation of fat mass (FM), fat-free mass (FFM), and FMI and FFMI index. A cross-sectional study was carried out on 232 schoolchildren aged 12-17 years in the city of San Salvador de Jujuy. Height, weight, bicipital and tricipital skinfolds were measured. Body Mass Index (BMI) and BF% by BIA (Maltron BF-900) and anthropometry (Deurenberg and Slaugther equations) were determined. Mean and standard deviations were calculated, and the differences by sex and age were established by analysis of variance. Pearson correlation coefficients were calculated, among different methods used to estimate BF%. The agreement between methods was analyzed with Bland-Altman. Females presented higher values of BMI, bicipital and tricipital skifolds, and higher percentages of overweight and obesity. The highest BF% was obtained with BIA in girls and with Slaugther in boys. Girls had significantly higher mean values of FMI than boys with all 3 methods. The highest BF% correlation was observed between BIA and Deurenberg, followed by Slaugther and Deurenberg. There was no agreement between the 3 methods. Given the accessibility of the BF% estimation with the Deurenberg equation, the application of this methodology is proposed in epidemiological studies of obesity. Rev Arg Antrop Biol 20(1), 2018. doi:10.17139/raab.2018.0020.01.05

Keywords : Bioelectrical impedance; Skinfold thickness; Body mass index; Jujuy.

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