College

Jeremy is 182 lbs. and is currently burning 60 ml/kg/min of oxygen on the treadmill, according to the digital display on the machine. He needs to report energy consumption in terms of kcal/min for his weight management program.

1. Calculate kcal/min of exercise at his current intensity.
2. If Jeremy exercised for 1 hour, how many kcal did he spend during his exercise session?

Answer :

Jeremy spent approximately 2.97 kcal during his 1-hour exercise session at his current intensity.

To calculate kcal/minute of exercise at Jeremy's current intensity, we can use the following formula:

kcal/min = ([tex]\rm V_O__2[/tex] × body weight in kg) / 1000

Where:

[tex]\rm V_O__2[/tex] is the oxygen consumption rate in L/min.

Body weight in kg is the weight in kilograms.

Converting Jeremy's weight from pounds to kilograms:

182 lbs ÷ 2.205 = 82.49 kg (rounded to 2 decimal places)

Converting the oxygen consumption rate from ml/kg/min to L/min:

60 ml/kg/min = 0.06 L/min

When we put the values into the formula, we get:

kcal/min = (0.06 L/min × 82.49 kg) / 1000 = 0.0495 kcal/min

Therefore, Jeremy is burning approximately 0.0495 kcal/min at his current exercise intensity.

To see how many calories he burned during an hour of exercise, simply multiply kcal/min by the number of minutes:

kcal spent = kcal/min × minutes

kcal spent = 0.0495 kcal/min × 60 min = 2.97 kcal

Thus, in his current effort, Jeremy burned 2.97 kcal during his hour-long workout.

Learn more about current intensity, here:

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