Understanding Which Fuel Source is Predominantly Used by the Body When Maximal Oxygen Uptake Exceeds 65%
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4 min read
During high-intensity exercise, carbohydrate (CHO) availability is fundamental, contributing over 80% of the total energy expenditure at 80% VO2max and above. So, which fuel source is predominantly used by the body when maximal oxygen uptake exceeds 65%? As intensity rises, the body shifts its metabolic pathway to rely on carbohydrates for energy.
