Part A - Calculating EER for Older Adults Mrs. Cook, a 65-year-old retired bank
ID: 262465 • Letter: P
Question
Part A - Calculating EER for Older Adults
Mrs. Cook, a 65-year-old retired bank teller, has noticed that despite eating the same diet over the last 3 decades, she now has a tendency to gain weight if not careful. She doesn't think her activity level is the likely suspect because she exercises fairly regularly. She plays tennis on Tuesdays and walks her dog about 2 miles every day. Occasionally, she gets out of town with her nephew and his family for a hike in the mountains, and she easily keeps up with her nephew’s 5-year-old children.
Calculate Mrs. Cook's current EER at 65, and her EER 30 years ago when she was 35. Mrs. Cook is 5 feet 4 inches tall and weighs 135 pounds. Assume that her activity level has remained approximately the same since as a bank teller she was standing and walking a lot for her job. Also, assume that despite the problems with maintaining weight, she has succeeded in keeping the same weight.
The Harris-Benedict equation for calculation of Resting Metabolic Rate (RMR) is as follows:
Adult females
RMR (kcal) = 655.1 + (9.6 × weight in kilograms) + (1.8 × height in centimeters) – (4.7 × age)
EER = RMR (from Harris-Benedict equation) × activity factor
Round the final number of kilocalories to the nearest whole number. During calculations, use numbers rounded to the first decimal place. Your answer should have two numbers, the current EER and the EER from 30 years ago, separated by a comma.
Part B - Estimating Daily Energy Requirements for Various Lifestyles
John has always had problems with maintaining his weight, and he is used to counting kilocalories and maintaining an active lifestyle. He has noticed that recently his diet of 2,500 kilocalories is no longer good for him. He is steadily gaining weight, and he has to go on a weight-loss diet from time to time to stay in shape. John is now 53; he is 5 feet 9 inches tall and weighs 168 pounds. He loves exercise. He bikes a 28-mile route with his cycling club on Mondays, plays volleyball on Thursdays, and runs 3 to 5 miles on other days.
What is John’s EER and how many kilocalories should he consume to maintain his weight?
The Harris-Benedict equation for calculation of Resting Metabolic Rate (RMR) is as follows:
Adult males
RMR (kcal) = 66.5 + (13.7 × weight in kilograms) + (5.0 × height in centimeters) – (6.8 × age)
EER = RMR (from Harris-Benedict equation) × activity factor
Round the final number of kilocalories to the nearest whole number. During calculations, use numbers rounded to the first decimal place.
Explanation / Answer
A.
The Harris-Benedict equation for calculation of Resting Metabolic Rate (RMR) is as follows:
At age 65,
Adult females
RMR (kcal) = 655.1 + (9.6 × 61.23) + (1.8 × 162.56) – (4.7 × 65)
= 655.1 + 587.8 + 298 - 305.5 = 1235.4
Since she lives an active life, therefore took activity factor as 1.55
So, EER = RMR (from Harris-Benedict equation) × activity factor
= 1235.4 × 1.55 = 1915 Kcal
At age 30,
Adult females
RMR (kcal) = 655.1 + (9.6 × 61.23) + (1.8 × 162.56) – (4.7 × 30)
= 655.1 + 587.8 + 298 - 141 = 1400
Since she lived an active life, therefore took activity factor as 1.55
So, EER = RMR (from Harris-Benedict equation) × activity factor
= 1400 × 1.55 = 2170 Kcal
Hence, the EER are 1915, 2170 at age 65 and 30 respectively.
B.
The Harris-Benedict equation for calculation of Resting Metabolic Rate (RMR) is as follows:
Adult males
RMR (kcal) = 66.5 + (13.7 × 76.2) + (5.0 × 175.26) – (6.8 × 53)
= 66.5 + 1043.9 + 876.3 - 360.4 = 1626.3
EER = RMR (from Harris-Benedict equation) × activity factor
since john lives an active life, so we take activity factor as 1.55
So, john's EER is = 1626.3 × 1.55
= 2521 Kcal
John can cut 200 Kcal from his diet to maintain his weight.