The only way to determine your fat burning zone is to get an actual test that determines your seven heart rate zones and determines your lactic and anaerobic thresholds. Heart rates can be measured. Heart rate zones cannot be estimated. High intensity or low intensity are abstract concepts unless they are supported by empirical data that scientifically categorizes them as high intensity or low intensity. Every single person has a zone where they burn fat most optimally. Training in a junk zone that is too light in intensity is a waste of time if fat burning is the goal for that activity. Training in a zone that is too intense can result in the body eating its own tissues and muscle. There is a zone. It needs to be scientifically determined and can only be trained in with a heart rate monitor. Estimation rarely works. As well, every six weeks or so, the same tests must be carried out. The heart rate zone changes with improved fitness levels. A person cannot determine their fat burning zone any more than a mechanic can look at a parked car and determine what is going on under the hood.
I feel very sorry for you. Very. And my last few posts were not directed toward you. Don't worry. They were directed to the others in the forum who actually listen to science. I was done "helping" you a long time ago. Thanks for the clarification though.
I suggest you take some time and do your homework, especially before coming at me with ignorant BS. You can lose weight however the hell you want. It doesn't take a rocket scientist to expend more energy than you take in. But when you start spouting off about what is optimal, again, I suggest you do your homework.
Grediagin A, et al. Exercise intensity does not effect body composition change in untrained, moderately overfat women. J Am Diet Assoc. 1995 Jun;95(6):661-5.
Mougios V, et al. Does the intensity of an exercise programme modulate body composition changes? Int J Sports Med. 2006 Mar;27(3):178-81.
Okura T, et al. Effects of exercise intensity on physical fitness and risk factors for coronary heart disease. Obes Res. 2003 Sep;11(9):1131-9.
Tremblay, et al. Impact of exercise intensity on body fatness and skeletal muscle metabolism. Metabolism. 1994 Jul;43(7):814-8
Yoshioka M, et al. Impact of high-intensity exercise on energy expenditure, lipid oxidation and body fatness. Int J Obes Relat Metab Disord. 2001 Mar;25(3):332-9.
Broeder CE, et al. The effects of either high-intensity resistance or endurance training on resting metabolic rate. Am J Clin Nutr. 1992 Apr;55(4):802-10.
For anyone who actually cares about science, much of the research that is long withstanding actually shows better muscle maintenance through the utilization of higher intensity exercise modes.
HIIT, being one form of high intensity training, is not recommended by almost every single elite coach on all levels of sport for no reason at all.
Give me a break.
Let me ask you this:
You lost this argument when you based your entire side on the idea that burning fat is required or optimal for fat loss.