Uso da CAFEÍNA no esporte
Autor: Pedro Pereira | Publicado: 2012-05-11T09:46:00-03:00

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Muito já se falava da utilização da cafeína na prática de
atividade física, independente do tipo de atividade, afinal estamos falando de
um dos suplementos mais antigos do mundo, onde seu efeito no organismo é
aumentar a potência física e mental.



A cafeína é conhecida por 2 (dois) tipos de efeitos
ergogêncios, tanto farmacológico, quanto nutricional, devido estar presente em
alguns alimentos, como o chocolate por exemplo.

Um nutriente não essencial para o nosso organismo, a cafeína
estimula o sistema nervoso central (SNC), diurese, lipólise (queima de gordura)
e secreção de ácido gástrico.



Dentre seus efeitos ergogênicos, citamos:

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Poupar glicogênio durante o exercício, devido à
quantidade de ácidos graxos livres no sangue.


·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Trabalha diretamente no SNC, onde melhora&nbsp; o estado de alerta, a circulação do sangue e
o desempenho cardíaco, melhorando a performance do atleta.


·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Efeito termogênico (queima de gordura corporal,
devido ao aumento da temperatura corporal).




Sobre o horário de administração, a cafeína tem seus
melhores resultados no prazo de 60 – 30 minutos antes do treino.

Apesar de ser um grande atrativo para os
praticantes/atletas, a cafeína pode gerar alguns problemas em certos
indivíduos. Ela é relativamente segura, mas há casos que ela gera efeitos
colaterais, pois seu consumo em excesso pode levar os usuários a quadro de
ansiedade, tremores, nervosismo, insônia e até mesmo arritmias cardíacas e
perda de memória.



Aos atletas que se exercita em lugares com temperaturas
elevadas, a cafeína possui um efeito de aumentar a temperatura corporal,
prejudicando o desempenho do atleta.

Como a cafeína aumenta a produção de urina (diurese), é um
caso de grande importância manter a hidratação, para evitar um colapso devido à
falta de água corporal (desidratação).



Além dos suplementos a base de cafeína, encontramos
presente no café, chocolate, refrigerantes a base do cola, chás, dentre outros,
sendo nem todos a melhor opção de uso.

Antes de usar qualquer suplemento, procure um
nutricionista.







Pedro Pereira

CRN 12100077