Why do athletes' muscles need to be trained in order to burn fat ...

[ereecah]

Why do athletes' muscles need to be trained in order to burn fat most efficiently?

Question 2

The Physical Activity Guidelines for Americans recommend:
 a. specific amounts of only aerobic physical activity.
 b. only vigorous-intensity physical activity as beneficial.
 c. spending the same amount of time each day on activity.
 d. performing a minimum of 150 min of moderate-intensity aerobic activity each day.
  e. accumulating activities in weekly totals of at least 10-minute sessions.

[adf223]

Answer to Question 1

Most people's muscles will begin to use fats from the bloodstream after 20 minutes of activity. At this point, the stored glycogen levels may be reduced. Studies have shown that muscles will use fatty acids more efficiently when they are trained. The levels of enzymes that break down fats are higher in trained muscles than in untrained muscles. Aerobic athletes have a stronger heart and lungs that can deliver more oxygen to the muscles. This allows them to break down fats aerobically to produce more energy.

Answer to Question 2

e

[ereecah]

Gracias!

[anyusername12131]

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