Question

3 — concepts of fitness
learning objective: interpret how the duration and intensity of exercise may alter the energy utilization from fat, carbohydrates, and protein
what energy source is utilized most during a long walk?

a.) protein

b.) amino acids

c.) glucose

d.) fat

Explanation:

During a long walk (low - intensity, prolonged exercise), the body primarily uses fat as an energy source. Protein is not a primary energy source during exercise (except in extreme cases of starvation or very long - term exercise). Amino acids are the building blocks of protein and not a main energy source here. Glucose (carbohydrate) is used more in high - intensity, short - duration exercise. So for a long walk, fat is utilized the most.

Answer:

d.) fat