In a rested, well-fed athlete, most of the carbohydrate used as a substrate during exercise comes from __________.

Question

Quizplus · Accepted Answer

Muscle glycogen stores are the primary source of carbohydrate during exercise in a rested and well-fed athlete. These glycogen stores are readily available to be broken down into glucose and used as fuel for the working muscles. Blood glucose and liver glycogen stores can also contribute to energy production during exercise, but they are not the primary source. Glycogen is not stored in fat cells.

In a Rested, Well-Fed Athlete, Most of the Carbohydrate Used