Are carnitine supplements at doses of 2-4 g/day considered safe?
a. No, there are documented side effects at such doses
b. Yes, such doses are considered safe
Q. 2What role does carnitine play in fat metabolism?
a. Transports fatty acids into the mitochondria
b. Cleaves 2-unit carbons during beta-oxidation
c. Activates lipoprotein lipase
d. Carries free fatty acids in the blood
Q. 3What is the mechanism by which caffeine most likely improves endurance performance?
a. Spares muscle glycogen
b. Enhances the release of muscle and liver glycogen
c. Increases the oxidation of fatty acids during exercise
d. Decreases perception of exertion
Q. 4What is the most important factor in weight (fat) loss?
a. Exercise intensity
b. Total caloric expenditure
c. Use of fat as a fuel source during exercise
d. Elimination of calories derived from alcohol
Q. 5The Respiratory Exchange Ratio (RER) gives an indication of:
a. absolute fat oxidation.
b. relative fat oxidation.
c. the lactate threshold.
d. protein (amino acid) oxidation.
Q. 6The point of highest relative fat metabolism (oxidation) occurs:
a. at an exercise intensity equal to maximal oxygen consumption (VO2max).
b. at an exercise intensity equal to the lactate threshold.
c. at an exercise intensity in the fat burning zone..
d. while taking a nap.
Q. 7As exercise intensity increases:
a. relative fat oxidation increases.
b. absolute fat oxidation decreases.
c. relative fat oxidation increases to a point, then decreases.
d. absolute fat oxidation increases to a point, then decreases.
Q. 8Why is a carbohydrate-restricted diet that results in ketosis not recommended for non-diabetic athletes?
a. The risk of developing ketoacidosis is too great and potentially fatal
b. The majority of weight lost would be lost as water and skeletal muscle
c. The ability to train would be diminished due to inadequate replenishment of glycogen stores
d. All of the above
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