Body mass index and body composition in relation to sexual maturation

Body mass index and body composition in relation to sexual maturation

Author Castilho, Silvia Diez Google Scholar
Cocetti, Monize Google Scholar
Barros Filho, Antonio de Azevedo Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Univ Catolica Campinas
Abstract Aim: To assess body mass index. (BMI) in relation to sexual maturation and verify how fat-free mass (FFM) and fat mass (FM) contribute to its increase.Methods: 1,275 White adolescents (656 girls and 619 boys), aged 9 to 18 years, were evaluated according to Tanner stages. FFM and FM were calculated by triceps and subscapular skinfold measurements and leg-to-leg bioelectrical impedance. BMI-for-maturation was distributed into percentiles. Fat-free mass index (FFMI) and body fat mass index (BFMI) were calculated based on BMI 50(th) percentile values.Results: During maturation, as BMI increases, girls gain FFMI (13.3 kg/m(2) at 131 and 15.8 kg/m(2) at 135) and BFMI (3.7 kg/m(2) at B1 and 5.7 kg/m(2) at B5) - proportionally more fat - while boys gain FFMI (14.3 kg/m(2) at G1 and 17.9 kg/m(2) at G5) and lose BFMI (4.8 kg/m(2) at G1 and 3.2 kg/m(2) at G5).Conclusion: These data suggest that FFMI and BFMI-for-maturation should be assessed in adolescents monitored for overweight and obesity.
Keywords body mass index
free-fat mass
fat mass
body composition
sexual maturation
Language English
Date 2008-02-01
Published in Journal Of Pediatric Endocrinology & Metabolism. Tel Aviv: Freund Publishing House Ltd, v. 21, n. 2, p. 127-133, 2008.
ISSN 0334-018X (Sherpa/Romeo, impact factor)
Publisher Freund Publishing House Ltd
Extent 127-133
Access rights Closed access
Type Article
Web of Science ID WOS:000254543400005

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