a. George is a 51-year-old, moderate risk client who weighs 163 lbs. Because of

Question

a. George is a 51-year-old, moderate risk client who weighs 163 lbs. Because of his high-stress job, he has recently started an exercise program at the company wellness facility. He has selected his treadmill workload at a comfortable level for him, which is walking at 3 mph up a 6% grade.What is his estimated gross O2 consumption in mL/kg/min and what is the net number of calories he is burning each minute?

b. An 80 kg person is jogging at 7.0 mph up a 2% incline.

What is the O2 cost? How many kcal are expended per min.?

- please show work I am super confused. Thank you!

Explanation / Answer

a.
STep 1= Convert units. Your speed needs to be in meters per minute. If your speed is in miles per hour, multiply it by 26.8 to find meters per minute. Percent grade needs to be written as a decimal. Your body weight should be converted into kilograms by dividing your weight in pounds by 2.2. Write the time that you spent exercising in minutes.
Speed- 3 mph-80.4 m/s
Grade- 0.06
Weight- 163 lbs- 70.4 kg

Step 2 = Complete the equation. If your speed was 3.7 mph or less, use the walking formula: (0.1 x speed) + (1.8 x speed x grade) + 3.5. If your speed was faster than 3.7 mph, use the running equation: (0.2 x speed) + 0.9 x speed x grade) + 3.5. Insert your speed and grade from Step 2 into the correct formula.

=(0.1*80.4) + (1.8*80.4*0.06) + 3.5
Oxygen consumed = 20.22 ml/kg/min

Step 3 = To calculate calories per minute. Multiply your oxygen used in Step 4 by your weight in kilograms and divide by 200

=(20.22* 70.4)/200
= 7.117 calories/minute

b.
Similarly with the above formula for speed greater than 3 mph
the oxygen consumed calculated is= 44.39 ml/kg/min
and calories burnt are: (44.39*80)/200 = 17.75 calories and 0.017 Kcal/min

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.