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Agreement of body adiposity index (BAI) and paediatric body adiposity index (BAIp) in determining body fat in Brazilian children and adolescents

  • Mariana De Santis Filgueiras (a1), Roberta Stofeles Cecon (a2), Eliane Rodrigues de Faria (a3), Franciane Rocha de Faria (a4), Patrícia Feliciano Pereira (a1), Andréia Queiroz Ribeiro (a1), Silvia Eloiza Priore (a1) and Juliana Farias de Novaes (a1)...

Abstract

Objective

To evaluate agreement of the body adiposity index (BAI) and paediatric body adiposity index (BAIp) in estimating body fat compared with dual-energy X-ray absorptiometry (DXA) and to propose cut-off points for these indices to classify excess adiposity in Brazilian children and adolescents.

Design

Cross-sectional study. Measures of weight, height, hip circumference, BMI and body fat percentage (%BF) assessed by DXA were taken, and BAI and BAIp were calculated. The Bland–Altman plot was used to estimate agreement between the methods, and the receiver-operating characteristic curve to determine the cut-off points for BAI and BAIp per age and sex in comparison with DXA.

Setting

Viçosa, Minas Gerais, Brazil.

Subjects

Children and adolescents aged 8–19 years (n 1049).

Results

Of the children and adolescents, 52·4 % were girls. BAI and BAIp had satisfactory performance by the receiver-operating characteristic curve, except for the 18–19 years age group, whose BAIp had better predictive capacity than BAI. The agreement analysis showed that BAI overestimated %BF by 2·64 %, on average, using DXA; while BAIp underestimated %BF by 3·37 %.

Conclusions

BAI and BAIp showed low agreement with the body fat obtained by DXA, requiring caution when interpreting body composition data in children and adolescents.

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Copyright

Corresponding author

*Corresponding author: Email mariana.filgueiras@ufv.br

References

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Keywords

Agreement of body adiposity index (BAI) and paediatric body adiposity index (BAIp) in determining body fat in Brazilian children and adolescents

  • Mariana De Santis Filgueiras (a1), Roberta Stofeles Cecon (a2), Eliane Rodrigues de Faria (a3), Franciane Rocha de Faria (a4), Patrícia Feliciano Pereira (a1), Andréia Queiroz Ribeiro (a1), Silvia Eloiza Priore (a1) and Juliana Farias de Novaes (a1)...

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