Question

luca is an athlete who trains 6 days a week. he has read that athletes need more protein. although he eats animal protein sources at most meals and drinks milk regularly, he has started using a protein shake twice a day. is this shake necessary? why or why not?
a. no, the shake is not necessary. athletes do not need any more protein than sedentary individuals.
b. yes, the shake is needed. the protein shake provides better - quality protein than that contained in foods of animal origin.
c. yes, the shake is needed. it is not possible for luca to consume the amount of high - quality protein that he needs without consuming two shakes.
d. yes, the shake is needed. athletes, such as luca, need substantially more protein than sedentary individuals - up to three times the adult rda each day.
e. no, the shake is not needed. lucas high - protein food choices should provide sufficient amounts of protein to meet his needs of 1.2 to 2.0 g/kg body weight.

Explanation:

Athletes like Luca need 1.2-2.0 g/kg body weight of protein daily, which is higher than sedentary individuals. However, animal protein sources (eaten at most meals) and milk are high-quality protein sources that can meet this requirement without protein shakes. Thus, the shake is not necessary.

Answer:

e. No, the shake is not needed. Luca's high-protein food choices should provide sufficient amounts of protein to meet his needs of 1.2 to 2.0 g/kg body weight.