Part 2 Now apply your knowledge of energy expenditure
through exercise by solving the following problem.
Jim weighs 220 pounds and wishes to lose 25 pounds
by running or jogging at 5 MPH for 30 minutes per
exercise session fi ve days per week. Do the calculations
to solve Jim’s problem by following these steps:
1. Multiply body weight by the appropriate calories
burned per minute per lb. from Table 8-3for running
or jogging 5 MPH.
220 lbs. ______ coeffi cient � ______ calories/min.
______ calories/min. 30 min. � ______ calories
2. Multiply the number of calories expended per
workout by the number of workouts per week:
______ calories 5 workouts/week � ______
______ calories/week � 3,500 calories/lb. � ______
lbs. lost/week
3. Divide the total pounds to be lost by the number of
pounds lost per week.
25 lbs. � ______ lbs. lost/week � ______ weeks
4.
a. How many calories will Jim expend per exercise
session? ______
b. How many pounds will he lose per week at this
energy expenditure? ______
c. How many weeks will it take Jim to lose
25 pounds? ______
A
We don't have your table, and I doubt if anyone here can answer your questions.
To solve Jim's problem, we need to follow these steps:
Step 1: Multiply body weight by the appropriate calories burned per minute per lb. from Table 8-3 for running or jogging at 5 MPH.
According to Table 8-3 (which is not provided in your question), we need to find the coefficient for running or jogging at 5 MPH to calculate the calories burned per minute per pound. Once we have that coefficient, we multiply it by Jim's body weight of 220 pounds.
Let's assume the coefficient for running or jogging at 5 MPH is 0.08 calories per minute per pound.
220 lbs. multiplied by 0.08 calories/min/lb. equals 17.6 calories/min.
Step 2: Multiply the number of calories expended per workout by the number of workouts per week.
Using the calculated calories burned per minute (17.6) from Step 1, we multiply it by the duration of each exercise session, which is 30 minutes.
17.6 calories/min multiplied by 30 min. equals 528 calories burned per workout.
To find the total calories burned per week, we multiply the calories burned per workout by the number of workouts per week, which is 5 in this case.
528 calories/workout multiplied by 5 workouts/week equals 2640 calories/week.
Step 3: Divide the total pounds to be lost by the number of pounds lost per week.
Jim wishes to lose 25 pounds. Let's assume the average number of pounds lost per week is 1 pound.
25 lbs. divided by 1 lb/week equals 25 weeks.
Step 4:
a. The number of calories Jim will expend per exercise session is 528 calories.
b. Jim will lose 1 pound per week at this energy expenditure.
c. It will take Jim 25 weeks to lose 25 pounds.
Please note that in order to provide more accurate calculations, we need the actual coefficient for running or jogging at 5 MPH from Table 8-3.