AlbinoAssassin said:
Bulldog, you made a reference to a common theory that I don't agree with. You said you don't want insulin to be spiked during a workout if you are trying to lose weight b/c spiked insulin inhibits fat breakdown. This is true. Honestly though, how much fat are you going to break down during a workout? I assure you it is miniscule, especially if you are training at a high intensity. The weight loss occurs via increased metabolism after the workout, and of course the total diet plan. The last time you want to be catabolic is during a workout and after it. Preserve muscle, don't approach a workout as if it's going to burn significant amounts of fat, it won't.
AA, you're absolutely right. you won't burn much fat during the hour or so that you work out. But that tiny bit of extra fat that you burn during each workout can add up if you do it right...and that is important, especially if you're cutting. And most of the time when you're cutting, you're doing cardio...and if you do cardio for a half hour at the right intensity, you CAN burn alot of fat.
I was talking about basic stuff before...but if you want to get into the details...
If you do cardio at an RER (respiratory exchange ratio) of 0.7 you are burning 100% fat. And although this is not possible, if you can get close to this value, you can burn alot of fat when you add up all your workouts during your cutting phase. For purposes of this post, let's just assume that reaching the 0.7 is possible. Now, for every 2.02 liters of oxygen you are consuming (above your resting O2 consumption, usually 5L) you are burning one gram of fat.
Now if you add an insulin spike to the mix...you're body will not mobilize this fat in the first place and will burn all the carbs you justn ingested.
That is a little more complex, but it's proven fact. If you don't know what an RER is, you should find out...especially if you want to cut fat. It's the most important indicator of which type of fuel you are burning during exercise.
So AA, I definitely agree with you that you will not burn alot of fat during a regular workout, but you CAN burn more if you do it right...and that CAN add up over time. Especially if you time your post-workout shake just right, and your exercise routine is well planned.
