Maximum Tolerable Carbohydrate Intake (MTCI) as the highest amount of carbohydrate an athlete can consume during exercise while still effectively absorbing it and avoiding gastrointestinal distress, emphasizing that this threshold varies substantially between individuals. MTCI is influenced by factors such as exercise intensity, duration, hydration status, environmental heat, gut training, carbohydrate type and ratio, and individual physiology, making it a dynamic rather than fixed value. Increasing MTCI through consistent gut training and appropriate fueling practices allows athletes to consume more carbohydrate and better sustain higher performance during prolonged endurance exercise. It is encouraged that athletes should identify and progressively improve their own MTCI instead of targeting a universal intake recommendation, as individualized fueling strategies are key to maximizing performance.
Read more of Aaron's own words from the Carbs Fuel Website: https://carbsfuel.com/blogs/news/maximum-tolerable-carbohydrate-intake