Question

Throughout this course, we have tried to emphasize the importance of meeting our nutritional needs through healthy food choices. This question asks you to put your knowledge to work and show what you know about our requirements for protein.   

a. John is a healthy 6 ft., 200 lb male, whose recommended caloric intake is 2000 calories a day. He is in a sedentary job, but goes to a personal trainer twice a week. The trainer has recommended that he take a protein supplement to add muscle. John is considering adding a high protein shake to his diet. He decides to evaluate his protein intake to see if the supplement is really necessary.

Based on the Guidelines for proportionality, how many calories of high quality protein should he consume a day?

a. John should consume between ______________ and _______________ calories from protein foods. Write your answer on line 1.

b.  John had an egg and two slices of bacon for breakfast. The egg had 6 grams of protein and the two slices of bacon had 16. How many calories of protein did John consume at breakfast? _______________calories Write your answer on line 2.

John skips lunch, but goes to his favorite steak house for an early dinner. Presented with options of a 6, 9, or 12 oz steak, he chooses the 9 oz. portion. This particular 9-oz steak contains 74 grams of protein. How many calories of protein are supplied by the steak? ___________ calories Write your answer on line 3.

He also has a corn on the cob which supplies 4.5 grams of protein and a Parkerhouse roll which has 3 grams of protein. How many calories does he get from these two food items? ______________________ calories Write your answer on line 4.

d. What is the total number of calories from protein that John consumed during the day ? ___________________ calories Write your answer on line 5

e. Does John need to take the protein supplement recommended by his trainer, or did he meet his protein needs for the day? Explain your answer on line 6

Answer 1

Protein requirements of a person can be calculated by multiplying person's weight with 0.36

As weight of John is 200lb

His protein intake should be 200×0.36=72gms

According to this calculation Jhon should take 72gms of protein per one day.

For a particular person he/she should get 12 to 20 % of their daily calories requirements from protien in their diet.

Each gram of protein provides 4 calories of energy.

a) According to the above mentioned data as John is taking a diet of 2000cal per day, he should consume between 240 cal and 400 cal from protein food.

b) Egg has 6 gms of protein and 2 bacon slices has 16gms of protein.

Total protein intake =6+16=22gms

Total calories obtained from breakfast =22×4=88Cals

C) 9oz of steak has 74 gms of protein in it.

Calories obtained from 74gms of protein in steak are=74×4=296cal.

John gets 296 cals from the steak he had.

Corncob has 4.5gms of protein

Calories from 4.5 gms of protein in corn cob =4.5×4=18cal.

Parker House roll has 3 gms of protein

Calories obtained from 3 gms of protein in Parker House roll =3×4=12cal.

Totally he get 18+12=30 cal from these two foods.

d) Jhon got his protein form each of his meal as follows

In Breakfast he got 22 gms of protein, that in turn gives 88 cals.

From the steak he had got 74 gms of protein, that gives 296 cals.

From corn cob and Parker House roll he got 4.5 & 3 gms of protein respectively and gets 18 cal and 12 cal from each of the respectively.

Total calories he got from protein =88+296+18+12=414cals.

Therefore John has obtained a total energy of 414 cal from the protien he took.

e) As John as obtained 414 cal from the protien he took and this amount is even a bit more from the requirements he should met according to his diet. So he need not take any supplement for the day.