A trained muscle's augmented mitochondrial oxidative capacity and increased glycogen storage helps to explain the muscle's enhanced capacity for carbohydrate breakdown in exercise.

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Training increases a muscle's mitochondrial density and oxidative enzymes, enhancing its ability to utilize oxygen and break down carbohydrates more efficiently during exercise. Additionally, trained muscles can store more glycogen, providing a readily available source of energy for prolonged or intense physical activity.

A Trained Muscle's Augmented Mitochondrial Oxidative Capacity and Increased Glycogen