How much Cardio is catabolic?

Discussion in 'Fitness & Nutrition' started by DatacomGuy, Jul 7, 2006.

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  1. DatacomGuy

    DatacomGuy is moving to Canada

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    I'm working in a sort of bulk phase (enjoying noob gains), but still trying to burn more bodyfat.

    Right now I do nearly zero cardio (down from 6 days of 45min of cardio before the 'bulk' phase).

    Thinking of maybe doing 3 days a week of AM cardio before work on non-workout days, and keeping my 3 days a week of PM weights on non-cardio days.

    What is best way to do the cardio without being catabolic? Is it in timing? Should I do on workout days? Or?? What is best strategy..?
     
  2. GOGZILLA

    GOGZILLA Double-Uranium Member

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    any cardio starts converting your muscles into slow twitch, im pretty sure almost anything considered "cardio" is going to be somewhat catabolic
     
  3. Genghis.Tron

    Genghis.Tron New Member

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    Weight lifting = increases protein synthesis (building muscle generally), increases protein breakdown (destroys muscles)
    cardio = increase protein breakdown
    eating protein = increase protein synthesis
    eating carbs = decrease protein breakdown
    HIIT = needs glycogen so it's not perfect if you don't get a lot of carbs. The body will convert more protein to glucose (ie: eat muscle) so that it has energy.
    Low intensity cardio = increases lypolisis (fat burning), eat some carbs to counter it's catabolic properties

    Catabolic = protein breakdown > protein synthesis
    Anabolic = protein synthesis > protein breakdown

    I think it's mostly right and should almost be in a sticky :eek3:
     
  4. jessb20hatch

    jessb20hatch Let's bang like Myosin & Actin

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    muscle fibers do not convert...fast twitch fibers do not turn into slow twitch and vice versa.
     
  5. DatacomGuy

    DatacomGuy is moving to Canada

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    This is how I understood it.
     
  6. DatacomGuy

    DatacomGuy is moving to Canada

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    So you're saying low intensity if any, then?
     
  7. Genghis.Tron

    Genghis.Tron New Member

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    Nope, I told you what I know so that you can decide. If you have a good carb intake, I don't see why HIIT would be a problem since it decreases protein breakdown. Charles Poliquin uses low-carb diets (below 50g of carbs a day I think) with his athletes and yet, they are athletes and do pretty well. I guess the number of cals has a lot to do with it do.
    My take is that if you're bulking you don't even have to think about it. If you were cutting for a bodybuilding contest it'd be another story I guess.
     
  8. DatacomGuy

    DatacomGuy is moving to Canada

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    Carbs are typically 100g+ easy. Esp on workout days..

    I guess I have more reading to do, as always.
     
  9. Chris3G

    Chris3G Bullshark Testosterone

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  10. Ceaze

    Ceaze https://hearthis.at/DoYouEvenUplift Moderator

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    all exercise is catabolic
     
  11. MrInconsistant

    MrInconsistant New Member

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    isn't your muscle type (fast/slow twitch) based on genetics?
     
  12. DatacomGuy

    DatacomGuy is moving to Canada

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  13. uofapeter

    uofapeter New Member

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    At the established intensity level of peak fat oxidation (~63% VO2 max), carbohydrate increases performance without any suppression of fat oxidation in trained subjects.


    ...good to know
     
  14. Elfling

    Elfling New Member

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    No, no you don't :mamoru: Alan Aragon is a rare exception over there.
     
  15. DatacomGuy

    DatacomGuy is moving to Canada

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  16. jessb20hatch

    jessb20hatch Let's bang like Myosin & Actin

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    yep
     
  17. iceburgslim

    iceburgslim Guest

    From what I've read it can to a certain extent but not enough to change muscle fiber dominance. Unless I read it wrong. :dunno:
     
  18. uofapeter

    uofapeter New Member

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    You are born with a certain number of slow and fast twitch fibers but the intermediate fibers (type 2a) can be converted and adapt to the type of training that you are doing. An extreme emphasis on cardio will convert a lot of these fibers to perform as if they were slow twitch.

    from here:
    http://www.naturalstrength.com/tips/detail.asp?ArticleID=833
     
  19. jessb20hatch

    jessb20hatch Let's bang like Myosin & Actin

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    Fast twitch fibers are divided into two types: fast twitch glycolytic (type IIb) and fast twitch oxidative fibers (type IIa) which are sometimes called intermediate fibers. These fibers use a combination of oxidative and glycolytic fibers...so in this case lifting may convert type IIa to resemble more like a type IIb, and vice versa with aerobic training.

    So just for clarification...Slow twitch fibers do not convert to Fast twitch fibers. Thus genetic inheritance is the determining factor of what percentage of fibers a person has.
     
  20. Ceaze

    Ceaze https://hearthis.at/DoYouEvenUplift Moderator

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    I'd post an excerpt from Supertraining but i have all my books packed cause i'm moving
     
  21. jessb20hatch

    jessb20hatch Let's bang like Myosin & Actin

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    Im packing right now too
     
  22. DatacomGuy

    DatacomGuy is moving to Canada

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    IN for article later? :x:
     
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