3. As you have learned in Module 1, you can estimate the oxygen consumption (VO2) of an activity if you know the type of

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3 As You Have Learned In Module 1 You Can Estimate The Oxygen Consumption Vo2 Of An Activity If You Know The Type Of 1 (90.65 KiB) Viewed 49 times

3. As you have learned in Module 1, you can estimate the oxygen consumption (VO2) of an activity if you know the type of activity (i.e., walking, running, cycling. stepping) and the intensity (i.e., speed and grade or workrate) of the exercise. Then, once you know VO2, you can estimate the energy expenditure (calories) of exercise bout. Assume that 200ml of oxygen consumed represents 1 kcal of energy expended. Example: Determine the relative VO (mikg/min) and the total energy expenditure (kcal) for a 65 kg person, walking on a treadmill at 3 mph (80.4 meters/min) up a 5% grade for 30 minutes? Using the Oxygen constants and equations given in the table, the calculated relative VO2​ for this exercise bout was 15.6 m/kg/min (Column L ), then after multiplying by the body weight the absolute VO2 was determined to be 1011.4ml/min (Column M). Finally, assuming that there are 200ml in 1 kcal, total kcals was determined as 5.1 kcal/min (Column N) or 152 kcal for the entire 30 -minute bout (Column O) For each type of exercise in the table below complete the grid (all blanks in blue) using the metabolic constants given. Make the calculations indicated and complete the grid to determine oxygen consumption and TOTAL caloric cost for each exercise. a) Determine the relative VO2​ml/kg/min and the total energy expenditure (kcal) for a 75 kg person, walking on a treadmill at 2.5mph ( 67 meters/min ) up a 4.5% grade for 45 minutes? Make calculations using the table below. (2 points) b) Determine the relative VO2 ml/kg/min and the total energy expenditure (kcal) for a 75 kg person, running on a treadmill at 5mph(134 meters/min ) at 0 grade for 20 minutes? Make calculations using the table below. (2 points) c) Discuss the total energy cost (total kcal) findings you calculated for the two exercise bouts: (i.e., 20 minutes of running @ 5mph,0 grade compared to 45 minutes of walking @ 2.5mph,4.5% grade). Are you surprised with these results? Explain. (3 points)