Fact or Fiction: Does Low-Intensity Exercise Burn the Most Fat? (from ACE's Essentials of Exercise Science for Fitness Professionals pg 76)
"A very common misconception in the exercise literature is that low-intensity exercise is the best way to lose body weight and, more specifically, body fat. This misconception is based on the RER chart (Respiratory Exchange Ratio). Below an RER value of 0.86, a higher percentage of fat is being burned for fuel. Thus, it has been thought that by exercising at a low intensity (the lower the intensity of exercise, the lower the RER value), more fat would be burned for fuel and that fat stores would selectively decrease. This notion does not make sense mathematically and, more importantly, has never been proven in the laboratory. ... It is important to remember that the total number of calories burned is what determines weight loss, regardless of the source of those calories."
How Effective Is HIIT?
"A very common misconception in the exercise literature is that low-intensity exercise is the best way to lose body weight and, more specifically, body fat. This misconception is based on the RER chart (Respiratory Exchange Ratio). Below an RER value of 0.86, a higher percentage of fat is being burned for fuel. Thus, it has been thought that by exercising at a low intensity (the lower the intensity of exercise, the lower the RER value), more fat would be burned for fuel and that fat stores would selectively decrease. This notion does not make sense mathematically and, more importantly, has never been proven in the laboratory. ... It is important to remember that the total number of calories burned is what determines weight loss, regardless of the source of those calories."
How Effective Is HIIT?
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