Sexta-feira, 14 de Dezembro de 2007

Exercício físico aumenta o apetite?

Senti-me na obrigação de esclarecer este assunto pela quantidade de vezes que sou bombardeado com a seguinte frase:

“Não faço exercício, porque depois tenho mais vontade de comer e engordo mais”

Não existe provas científicas de que o aumento da actividade física aumenta a ingestão de energia.

Antes pelo contrário, existem factos a comprovar que a fome é diminuída depois da prática de exercício intenso, devido a uma maior libertação de hormonas, nomeadamente a leptina, que é anorexigénica (diminui o apetite). Contudo, este efeito dura apenas uns dias e por si só, também não influencia a ingestão de energia a longo prazo.

Por isso, pode-se concluir que não existe efeito entre exercício físico e a ingestão de energia a longo prazo.

Agora será que o exercício físico influência o tipo de alimentos que ingerimos?

Também neste campo não existem factos científicos concretos.

A curto prazo, o efeito é insignificante.

A longo prazo, a actividade tem uma ligeira associação com o aumento da ingestão de hidratos de carbono. Mas, não se sabe se este aumento deriva directamente de mudanças fisiológicas provocadas pelo aumento da actividade física.

Por isso caros leitores, não deixem de fazer exercício.

O mito é FALSO !!!!

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