Which of the following describes a characteristic of fat use during physical activity?
a. It is released as fatty acids from internal fat stores and subcutaneous fat.
b. Upon commencement of an activity, blood fatty acids rise to provide an immediate source of fuel.
c. Fat that is present within the muscle fiber represents the primary source of energy for that muscle.
d. After consumption of a high-fat diet for at least 3 days, physical activities are performed as efficiently as from intake of a high-carbohydrate diet.
e. Sports nutrition experts recommend that athletes consume less than 15 percent of their energy from fat to meet nutrient and energy needs.
Question 2
Which of the following is a property of conditioned muscles?
a. They can store more glycogen.
b. They are more efficient at converting fat to glucose.
c. They contain fewer mitochondria due to increased glucose utilization.
d. They rely less on fat breakdown and more on glucose oxidation for energy.
e. They are resistant to lactate build-up.
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