Exercise Duration & Fuel Selection

The video tutorial by Kevin Tolkoff explains how fuel sources change with exercise intensity and duration. At lower intensities, fat is the primary fuel, while at higher intensities, carbohydrates dominate. As exercise duration increases, the body shifts from using carbohydrates to fats due to limited glycogen stores. The video also discusses energy storage in glycogen and the role of adipose tissue in prolonged exercise. Key differences between fuel usage based on intensity and duration are highlighted.

What are the primary fuel sources used during exercise according to the text?

How does the reliance on carbohydrates and fats change as exercise intensity increases?

What happens to carbohydrate reliance during prolonged exercise at a constant intensity?

How does the body manage energy sources during prolonged exercise?

What is the significance of glycogen stores in relation to exercise duration?

Why do we rely more on fat as exercise duration increases?

Explain the difference between fuel source variation with exercise intensity and exercise duration.