Pare de brigar com a balança! Entenda um pouco sobre Composição Corporal
Autor: Prof. Pablo | Publicado: 2013-04-02T11:37:00-07:00









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Reduzir a quantidade de gordura e/ou aumentar a
quantidade de massa muscular estão entre os anseios de grande parte dos
praticantes de exercícios físicos. Esta preocupação pode ser notada não somente
do ponto de vista estético, mas também de qualidade de vida dos indivíduos, já
que a obesidade está associada a um grande número de doenças
crônico-degenerativas.&nbsp;A&nbsp;avaliação
da&nbsp;composição corporal&nbsp;é realizada para quantificar os principais componentes do organismo
humano: ossos, musculatura e gordura corporal.

Dessa forma, a análise da&nbsp;composição
corporal&nbsp;possibilita compreender
as modificações resultantes de alterações metabólicas e identificar riscos à
saúde.  A avaliação da composição corporal constitui
uma importante ferramenta em programas relacionados à melhoria da aptidão
física e das condições de saúde individuais ou coletivas, bem como na prevenção
e tratamento de vários agravos crônicos, como o sobrepeso e obesidade, a
sarcopenia e a osteoporose. Diversas técnicas e metodologias indiretas são
utilizadas para avaliação da composição corporal: a) antropometria; b) medidas
do volume corporal; c) medidas de volume hídrico corporal, incluindo métodos de
bioimpedância; d) técnicas de imagem corporal, que incluem tomografia,
ressonância magnética e a absortometria de feixe duplo (DEXA – dual X-ray
absorptiometry). 

Para realização destas medidas requer-se um treinamento
prolongado e padronização na obtenção de resultados
confiáveis. Embora os erros de medição de pregas cutâneas não possam ser
eliminados, existem alguns métodos que são utilizados para minimizar essa
porcentagem de erro que o tornam de alta confiabilidade e baixo custo.&nbsp;





Veja um bom exemplo da importância de se conhecer a Composição Corporal:

Um ser humano pode ter
peso a mais e não ter nenhuma gordura em excesso (ex.: atleta de
Halterofilismo), assim como um ser humano pode ter pouco peso e ter muita
gordura e celulite (ex. : mulher magra, sedentária e com maus hábitos
alimentares).















FAIXA DE PERCENTUAL DE GORDURA IDEAL, DE ACORDO COM SEXO E A IDADE







Faixa EtáriaHomensMulheres
de 18 a 29 anos14%19%
de 30 a 39 anos16%21%
de 40 a 49 anos17%22%
de 50 a 59 anos18%23%
acima de 60 anos21%26%



Fonte:&nbsp;ACMS - Lea &amp; Febiger, 1986


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