Quote:
Originally Posted by TheSutterDynasty
The type of macronutrient your body uses for energy is not an indicator of how many calories an activity burns. You're right, high intensity has a higher RER and consequently utilizes carbohydrates more than fat, but overall "fat loss" has nothing to do with this, but rather the amount of calories the workout burned overall (and if you're in a caloric deficit). Short term, the source of energy will be replaced regardless if it's fat or glycogen / glucose; weight loss is much more long term than that.
With the same duration, a HIIT workout will burn more calories than an aerobic workout always. If you think about it, the harder you work the more calories you're burning, it's pretty simple. Though keep in mind you can't sustain HIIT nearly as long as aerobic so you should be including both in your regime.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2991639/ |
All absolutely true, more calories burned = greater long term fat loss but part of the equation is that the cycle tends to be:
Eat, work out at a high intesity, eat because you feel hungry because you've been burning carbs/glycogen.
Thus you tend to eat more due to the nature of your workout so the net gain isn't there. Yes, it's mostly a behavioral thing, and it's certainly possible to resist and not eat, but why make it tougher on yourself?
If you work out before eating, work in an aeorbic state, and then eat, you'll obviously be eating less prior to, but usually feel less hungry/eat less after the workout.
There is of course room for high intensity training as well (I do plenty of that as well), but I've found for sustained weight loss, working out before eating, and working mostly in your aerobic zone, is VERY effective.