Estimate of the fat percentage using the BMI

  • Francisco Teixeira Andrade Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil
  • Maria do Carmo de Carvalho e Martins Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil
  • Marcos Antonio Pereira dos Santos Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil
  • Francisco Leonardo Torres-Leal Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil
  • Antônio Hosmylton Carvalho Ferreira Universidade Estadual do Piauí­ (UESPI), Teresina-Pi, Brasil
Keywords: Bioimpedance, Fat mass, Obesity, Overweight

Abstract

Overweight and obesity are characterized as functional or organic disorders in which excess weight is evident in relation to height, or rather excess fat mass relative to lean body mass. Obesity is a risk factor for behavioral, locomotors, cardiovascular, metabolic, endocrine, oncology, respiratory, liver, bone, joint, menstrual and fertility complications. In order to investigate thedifferences in the prevalence of overweight (body mass index or BMI > 24.99) and excessive fat percentage (fat % above normal limits NHANES III) and, especially, to test the existence of correlation between BMI and BIA (bioelectrical impedance analysis orassessment by BIA), 293 women and 257 men were examined by the two methodologies. The difference between said prevalence is significant (p < 0.001). It is also significant (p < 0.001) correlation between BMI and % fat in both sexes, being higher among women. Derived mathematical models of this correlation and adding BMI and age, allow estimating % fat: = -6.4367 + 1.6291BMI -0.07671Age, R20.663, CV 14.31 and P < 0.001 (in women); = -8.7443 + 1.2685BMI -0.03545Age, R20.585, CV 21.98, P < 0.001 (men). This methodology,replicated inregionalpopulation segments, enables theassessment ofoverweight-obesity problemmore effectively, precision and accuracy.

Author Biographies

Francisco Teixeira Andrade, Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil

Médico, Professor Adjunto do Departamento de Biofí­sica e Fisiologia/CCS/UFPI

Maria do Carmo de Carvalho e Martins, Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil

Professora de Fisiologia do Departamento de Biofí­sica e Fisiologia da Universidade Federal do Piauí­

Marcos Antonio Pereira dos Santos, Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil

Professor de Fisiologia do Departamento de Biofí­sica e Fisiologia da Universidade Federal do Piauí­

Francisco Leonardo Torres-Leal, Universidade Federal do Piauí­ (UFPI), Teresina-PI, Brasil

Professor de Fisiologia do Departamento de Biofí­sica e Fisiologia da Universidade Federal do Piauí­

Antônio Hosmylton Carvalho Ferreira, Universidade Estadual do Piauí­ (UESPI), Teresina-Pi, Brasil

Professor do Departamento de Zootecnia da Universidade Estadual do Piauí­

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Published
2014-08-26
How to Cite
Andrade, F. T., e Martins, M. do C. de C., dos Santos, M. A. P., Torres-Leal, F. L., & Ferreira, A. H. C. (2014). Estimate of the fat percentage using the BMI. Brazilian Journal of Obesity, Nutrition and Weight Loss, 8(47). Retrieved from https://www.rbone.com.br/index.php/rbone/article/view/346
Issue
Vol. 8 No. 47 (2014)
Section
Scientific Articles - Original

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