One of the main focuses of a good fitness program is to burn fat. What many people may not know is that High Intensity Interval Training will burn a lot more calories than the typical 30-45 minutes on a treadmill. The following study will explain a little more.
Today, research has proven that this belief in exercising at a low intensity to stay in the “fat burning zone” was false. At lower intensities, you burn more calories from fat, but you burn fewer total calories.A 1995 study conducted by Grediagin, et al, published in the Journal of the American Dietetic Association (95(6):661-5) compared fat loss in two groups over a 12 week period.One group performed exercise at 80% of VO2 max for a duration sufficient to burn 300 kcal, the other group performed exercise at 50% of VO2 max for a duration sufficient to burn 300 calories (took a lot longer, of course). Hydrostatic body composition testing revealed that each group lost an identical amount of fat.The authors concluded: “This study suggests that fat loss is a function of energy expended rather than exercise intensity. Therefore, if fat loss is the goal and time is limited, persons should exercise safely at as high an intensity as tolerable to expend as much energy as possible during their allotted time.”
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