When carbohydrate fuel (glycogen) in muscles is used up, it is difficult to maintain the high initial workload unless the blood glucose concentration is elevated by carbohydrate feedings. Athletes call this condition__________________________?
Correct answer: A. Hitting the wall
- A. Hitting the wall
- B. The second wind.
- C. The training effect.
- D. Hypoglycemia.
Explanation
“Hitting the wall” describes the sudden drop in endurance when muscle glycogen becomes severely depleted during prolonged exercise. The second wind is a later feeling of renewed energy, while hypoglycemia specifically means low blood glucose.
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