John is 35 and interested in gaining muscle mass. He wants to do it as quickly as possible and goes to the local health food store. The clerk approaches him wearing a white lab coat—this immediately impresses John, who now thinks that the clerk is well informed. John explains that his goal is to gain the maximum muscle mass in the shortest time. The clerk gets a twinkle in his eye and says "Let
me show you what we have that will certainly help you.". Let's see if the clerk really knows what ergogenic aids are all about by answering these questions. The clerk recommends that John increase his protein intake by purchasing amino acid supplements. Is this a good idea?
a. Yes, because most Americans don't get enough protein of high quality.
b. Yes, because these products have been proven to increase muscle size.
c. No, because your body converts extra amino acids to fat.
d. No, because excess amino acids can lead to over-hydration.
c
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Which of the following is associated with the development of ketosis?
A) a diet that contains insufficient carbohydrate B) a diet that contains too much fat C) a diet that contains insufficient fat D) a diet that contains too much carbohydrate
Which of the following substances is a provitamin or a precursor for a vitamin?
A. Alpha-tocopherol B. Lecithin C. Beta-carotene D. Acetyl-CoA
A trained muscle is better equipped to use ______ for energy and can conserve its _____ supply for a longer period of time
a. glucose, fat b. fat, glycogen c. amino acids, glucose d. glycogen, amino acids
A limitation in using the body mass index is that it
A) is not accurate when used on women. B) is difficult to determine. C) does not take body composition into account. D) is not a good predictor of health risks.