Why is carbohydrate loading beneficial before a major event?

Carbohydrate loading is a strategy used by endurance athletes to maximize glycogen stores in the muscles and liver prior to an event. This method is beneficial because it enhances endurance and energy availability, which can significantly improve performance during prolonged physical activities, such as marathons or triathlons.

When athletes increase their carbohydrate intake in the days leading up to an event while tapering their training, they can store more glycogen— the body’s preferred source of energy during high-intensity and endurance activities. Higher glycogen levels allow athletes to maintain their performance for a longer duration before fatigue sets in, as glycogen is essential for sustaining energy output during exercise.

In contrast, some of the other options present misconceptions about carbohydrate loading. For instance, carbohydrate loading does not decrease muscle mass; rather, it supports muscle performance and endurance. Additionally, the concept of carbohydrate loading is well-supported by scientific research, demonstrating that it can effectively improve endurance performance. Lastly, while proper hydration is crucial during this phase, carbohydrate loading itself is not inherently linked to dehydration; rather, it should be part of a well-rounded approach that includes adequate fluid intake.