Question

Tonya is 5' 3" tall, weighs 151 pounds, and is 38 years old. Her waist circumference is 37". Her life is busy but sedentary. She simply does not have the time or energy to stay with an exercise program after working all day as a receptionists and caring for her two socially active children. She would like to lose about 20 pounds but knows dieting doesn’t work for her—all the diets she has tried in the past have left her hungry and feeling deprived. Losing weight has taken on greater importance since her doctor told her that both her blood pressure and glucose levels are at "borderline" high levels.
Required:
a. What is her BMI? Assess her weight based on BMI.
b. Estimate her total calorie requirements using the rule-of-thumb method of calculating BMR and adding calories for a sedentary lifestyle. How does it compare to the level of calories recommended in Table 7.3 of your text for a woman her age with a sedentary lifestyle?
c. How many calories would she need to eat to lose 1 pound of weight per week if her activity level stays the same? Two pounds per week? Is a 2-pound weight loss per week a reasonable goal?

Answer 1

Answer&Explanation:.BMI is calculated by dividing the body weight with a square of the body height

Weight of Tonya is 68.6kg and height is 1.6meters (I converted feet to meters and pounds to kg), her BMI is above 25 which means she is overweight.

B.Using the rule of thumb total calories she needs are : her weight is 151 but normal weight for her will be 131 and the average is 141 which means estimated BMR is 141 lbs X 10 =1410 calories; since she leads a sedentary lifestyle the calories spent on activity is 141x20=282calories; recommended calories for her age is 1800. The total estimated calories requirement for her is 1692 since rule of thumb considers weight only.

C.Since 3,500 calories equals about 1 pound (0.45 kilogram) of fat, from this we can make an estimation that if you want to lose one pound , one needs to gradually lose or reduce their calories by 500 until they have burnt up to 3500 calories in total. For this reason if Tonya cuts her calories by 500 to 1000 they will lose 1 to 2 pounds in a week.

She will have to cut 500 calories per day in order to lose one pound per week

And 1000 calories if she want to shed 2pounds. This is a slow and sustainable weight loss which can be carried out throughout her life .