What is a potential effect of carbohydrate loading before an event?

Carbohydrate loading is a strategy used by athletes to maximize glycogen stores in the muscles and liver before an endurance event, such as a marathon or a long-distance cycling race. By increasing the intake of carbohydrates in the days leading up to the event, athletes can enhance their energy reserves, which directly contributes to improved endurance performance during prolonged physical activities. This increased availability of glycogen helps to delay fatigue, allowing athletes to sustain their performance for a longer duration.

The practice of carbohydrate loading is particularly beneficial for endurance events lasting over 90 minutes, where the body's demand for glucose becomes critical. By having sufficient glycogen stores, athletes may experience better race times, enhanced stamina, and overall improved performance levels compared to when their glycogen stores are depleted.