Question

How much energy for PA does fat supply, and what does that % depend on?

a) 20-30%; depends on exercise intensity
b) 40-50%; depends on exercise duration
c) 60-70%; depends on individual metabolism
d) 80-90%; depends on fitness level

Answer 1

Fat typically provides 20-30% of the energy for physical activities, depending on exercise intensity. Athletes' energy needs vary based on energy expenditure, but the recommended fat intake remains 20-35% of total energy.

Step-by-step explanation:

The energy fat supplies for physical activity (PA) is approximately 20-30%; this percentage depends on the intensity of the exercise. When exercise intensity is lower, the body primarily uses fat as its source of fuel. However, as the intensity increases, the body shifts towards using carbohydrates for quick energy. It's notable that individual metabolism, exercise duration, and an individual's fitness level can all influence this percentage, but generally, for most people and typical activities, fats provide around 20-30% of the energy used.

It's important to point out that while the energy needs for athletes increase depending on their energy expenditure, which involves factors like intensity, duration, and frequency of exercise, fat intake should be balanced and is generally recommended to be 20-35% of their total energy intake to ensure adequate intake of fat-soluble vitamins and essential fatty acids.