Análise dos índices de adiposidade e de aptidão física em  crianças pré-púberes

 

Fabrício B. Alves

Anabelle M. Barbosa

Wagner de Campos

Ricardo W. Coelho

Sérgio G. da Silva

 

Centro de Pesquisa em Esporte e Exercício, Universidade Federal do Paraná, Brasil

 

 

 

RESUMO

O objectivo deste estudo foi avaliar indicadores de aptidão física em crianças pré-púberes dos dois sexos com idades compreendidas entre os 8-11 anos e em cada sexo (32 meninos e 35 meninas) as relações existentes entre diferentes indicadores de adiposidade. Os estágios de maturação sexual foram considerados e determinados por método de auto-avaliação modificado . Os indicadores de adiposidade considerados foram o  percentual de gordura a partir de medidas das dobras cutâneas do tríceps e subescapular) e os perímetros da cintura e quadril. Para a avaliação da aptidão física recorreu-se aos testes de sentar e alcançar, de preensão manual e ao teste de 20 m de corrida em vai-vém para estimação do VO_2max. Nos dois sexos, registaram-se correlações significativas (p<0,05) entre a percentagem de gordura, o IMC, e perímetros da cintura e quadril. O IMC foi melhor predito (89,7%) pelo percentual de gordura, massa corporal magra e idade. A massa corporal magra foi diferenciada entre sexos (p<0,05). Os meninos apresentaram nível de flexibilidade discretamente menos elevado (p>0,05); melhor nível de força de preensão manual e VO_2maxdo que as meninas (p<0,05). Recomenda-se que o estágio maturacional por sexo seja considerado na análise dos indicadores de adiposidade e de aptidão física em crianças.

Palavras-chave:adiposidade, aptidão física, pré-púberes.

 

 

ABSTRACT

Analysis of adiposity and physical fitness indexes in prepubertal children

The purpose of this study was the to assess physical fitness in prepubertal children aged 8-11 years old and , and by gender (32 boys and 35 girls) to analyze the relationships between adiposity indexes. The drawings of self-assessment modified by Faulkner were used to assess the stage of sexual maturation. Fat percentage was calculated by Boileau et al. equations, waist and hip perimeters were collected by Callaway et al. standardization. Sit-and-reach test and hand grip tests were performed according to Johnson and Nelson and Safrit. VO2_max estimation was had using 20-m Shuttle Run test developed by Léger et al.. As a result, there were significant correlations (p<0.05) among BMI, fat percentage and waist and hip perimeter. BMI awareness was best predicted (89.7%) by fat percentage, lean body mass and age. The obtained lean body mass was different between sexes (p<0.05). Scientific outcomes for boys presented lower level of flexibility (p>0.05); higher levels of handgrip strength and VO2 max (p<0.05). Sharply, maturational stage and sex should be considered in the analysis of adiposity and fitness in children.

Key-words: adiposity, fitness, prepubertal

 

 

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CORRESPONDÊNCIA

Fabrício Barbosa Alves

Rua Paraguai, 406 – Sobrado 01

82510-090

Bacacheri, Curitiba – PR

e-mail: fabriciobalves@yahoo.com