Question

Which person is exercising at a higher MET level – Fred (72 kg) running at 6 mph and on a 10% grade or Pete (55 kg) cycling on a Monark ergometer with a resistance of 2.5 kg and a pedal rate of 60 rpm? Can you please show work

Answer 1

Metabolic Equivalent of Task, or MET, is a measure of the ratio of the rate at which a person uses energy with respect to their mass, compared to a fixed reference standard, which is set at 3.5 ml of Oxygen per kg per minute.

In the first case, Fred has a mass of 72 kg, and is running at 6mph and on a 10% grade. His VO2, or maximal oxygen consumption during the time of this exercise is 50.1 ml/kg/minute. When compared to the reference level of 3.5, this comes out to be a MET of 14.5.

In the second case, Pete has a mass of 55 kg, and is cycling on a Monark ergometer with resistance of 2.5 kg and pedal rate of 60 rpm. His VO2 during this exercise comes out to be 35.1, which when compared to the reference of 3.5, comes out to be 10.1.

Therefore, Fred is exercising at a higher MET level (14.5) than Pete ( 10.1).

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