advertisement
Question
Posted by: E | 2008/10/20

Question

Hi Ross

just want to make sure on something, I heard that if a person does more than an hour cardio per day, its starts burning the muscle, is this true?

Not what you were looking for? Try searching again, or ask your own question
Our expert says:
Expert ImageFitnessDoc

HI E

No, not at all. This is entirely a function of energy in vs. energy output. If someone is taking in bascially zero energy (as in someone on a hunger strike), then they use protein as a source of energy, because it's all they have available.

However, for most of us, and certainly in one hour of training, we have enough energy available from fat and carbs that we don't need to use protein, and so don't. It's only in those extreme exercise cases, where people do races lasting over a day that protein does start to get used. So the key is to make sure that your energy intake is matched with your energy output. Provided you get this right, you'll keep your muscle mass the same, or increase it.

Good luck

The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.

Have your say

Thanks for commenting! Your comment will appear on the site shortly.
Thanks for commenting! Your comment will appear on the site shortly.
advertisement