which is used for energy first?

[110%]

ok i know glycogen from carbs is used first in need of energy, but waht is second i always hear muscle breaks away for protein, but i have also mostly heard fat, which one is true, such as doing cardio in the morning on an empty stomach so there is no carbs, fat is first right?

 

[FitnessFrk]

both areobic and anareobic excerises burn carbohydrates and fats but it is the ratios of each burned that differs. but when areobic exercise is performed and there are no longer any carbohydrates to burn (coming from muscle glycogen and blood sugars) then that's when the real fat burning starts. that is the theory behind doing full cardio sessions in the am on a empty stomach and why doing cardio after weight training is the second best time.

so to answer your questions it's carbs and fats first, then fat. And if cardio is performed for too long a durataion after muscle glycogen is depleted the body will only burn so much fat before it dips into stored protein in the form of muscle tissue. which is why you should only do short cardio sessions 20-25 minutes after weight training.

 

[cure]

That's why people tend to do cardio first thing in the AM on an empty stomach.

 

[missyd143]

some people say fat is not used ...after carbs muscle is used...thats why people say to do cardio for 60 min in the morning...but wouldnt that be catabolic and start using muscle?? after 20 min of moderate intensity i heard no fat is used ...what to do??

 

[MuscleDm]

missy,

Actually the after 20 minutes of moderate intensity cardio is when the fat burning really gets kicked into high gear. Right at the beginning and for the first 10 - 12 minutes it is primarily carbs being used, but after that is fat starts to rise...and rise....and rise.....and it peaks at about 45 minutes....that is why 60 minutes of moderate intensity cardio is great. I did 60 minutes of moderate intensity cardio every morning for 70 days straight leading up to Teen and Collegiate nat's and i got very lean. I did lose some muscle though, but that was some other mistakes I made. Anyways....I hoped that helps!!

Ryan

 

[missyd143]

hey i was wondering if u would consider walking on an incline as moderate intensity...cause running for 60 min is a no no for me lol...what do u do ?? did you change it up? and what diet did u follow for 70 days//?

 

[110%]

ok if fat is used after carbs then why is it a good tip to not workout more than one hour, wouldnt it be good to workout more than an hour cuz u would then be burning fat, and i am not talking about the same bodypart, different ones, is it just the fatigue part, that the bodyparts u r working wont be gettinga g ood workout if ur working out too long?

 

[MS]

There is no good reason to NOT do mild to moderate cardio for more than an hour except most people don't have the time. If fat burning is the goal, the best workout is actually something VERY low intensity such as walking for an extended period. It all depends on the instensity as well as the caloric deficit. At the end of the day it's the caloric deficit that will be the main determinant of fatloss, rather than fat actually burned while performing an activity. So heavy weight training/interval sprints burn mostly glycogen and very little fat, but are still the best all round exercises for getting lean while maintaining muscle.

 

[MuscleDm]

Missy,

Power walking on the treadmill at an incline I consider upper moderate intensity cardio.

The diet I followed leading up to Teen and Collegiate Nat's was a low carb (less than 100 gms per day), and about 325 grams of protein per day, plus a couple tablespoons of flax per day for some fat. I only had about 6 different foods over and over. It was mad hard, but worked big time. Any other specific questions you have feel free to email me at [email protected]

Later
Ryan