What statement is true about the relationship between carbohydrate intake and performance?

The relationship between carbohydrate intake and performance is crucial for athletes and active individuals. Carbohydrates are the body's primary source of energy, especially during high-intensity exercise. When carbohydrate intake is adequate, it helps to maintain glycogen stores in the muscles and liver, which are essential for sustaining energy levels during prolonged physical activity.

In terms of hydration, carbohydrates play a supportive role. Consuming carbohydrates can stimulate insulin production, which helps in the uptake of glucose and also influences the retention of fluids in the body. This is particularly relevant during endurance events, where maintaining hydration levels is vital for optimal performance. A higher intake of carbohydrates can thus ensure that an athlete not only has sufficient energy but is also better able to manage hydration demands during physical exertion.

Other options, while they may hold some truth in certain contexts, do not accurately capture the beneficial relationship between carbohydrate intake and performance. For example, higher carbohydrate intake is known to enhance rather than impair recovery, and lower carbohydrate intake is generally associated with decreased performance during high-intensity or endurance activities. Additionally, higher carbohydrate intake should not promote muscle breakdown; instead, it helps in muscle recovery and replenishment of glycogen stores post-exercise.