NSCF Personal Trainer Complete Practice Exam

In endurance activities, complex carbohydrates should be prioritized for energy due to their ability to provide a steady and prolonged source of fuel. Unlike simple sugars, which can lead to quick spikes in blood sugar followed by crashes, complex carbohydrates are digested more slowly, allowing for a more sustained release of glucose into the bloodstream. This steady supply of energy is crucial for endurance athletes, who often engage in prolonged exercise that demands a consistent energy source.

Complex carbohydrates, such as whole grains, legumes, and starchy vegetables, are rich in fiber, vitamins, and minerals, contributing to overall health and performance. They also help in replenishing glycogen stores in the muscles and liver, which is critical for maintaining energy levels during long-duration activities.

While fats can also serve as an energy source, especially during lower-intensity exercise, they do not provide the quick energy that is often necessary for high-intensity endurance activities. Protein is primarily used for muscle repair and recovery rather than as a primary energy source during exercise, and simple sugars may not provide the sustained energy needed for endurance events. Thus, complex carbohydrates serve as the optimal choice for energy in endurance activities.