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Which type of athlete is most likely to benefit from glycogen loading?

A. Professional baseball player
B. College football player
C. Competitive 10K runner
D. Cross-country skier

Answer :

Final answer:

A competitive 10K runner and a cross-country skier are most likely to benefit from glycogen loading because their sports require sustained energy and they rely on aerobic metabolism, which utilizes glycogen stores for extended activities.

Explanation:

Glycogen loading is a strategy used by endurance athletes aiming to maximize glycogen stores in their muscles, which is beneficial for sports that require sustained energy over a long period of time. Among the given options, a competitive 10K runner and a cross-country skier are most likely to benefit from this practice due to the aerobic nature of their activities. These athletes rely on aerobic metabolism to maintain energy during their events, which can last for much longer than 1.6 minutes, the duration that glycogen can fuel anaerobic metabolism.

The muscular and hepatic glycogen acts as a readily available source for glycolysis during vigorous and sustained physical activity. In contrast, athletes involved in short bursts of activity, such as professional baseball players and college football players, require immediate, short-term energy that is often provided by the phosphagen and anaerobic metabolic pathways. Therefore, carbohydrate loading is less beneficial for them compared to endurance athletes who participate in activities like 10K runs or cross-country skiing where glycogen stores can be crucial for performance.

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