Question

How many calories are burned by walking 30 minutes at a moderate pace on a treadmill for a 35-year-old weighing 154 pounds?

Answer 1

To estimate the number of calories burned while walking for 30 minutes at a moderate pace, you can use the MET (Metabolic Equivalent of Task) value for walking. Moderate-paced walking (about 3.5 mph) typically has a MET value of around 3.8.

The formula to calculate calories burned is:

\[
\text{Calories burned} = \text{MET} \times \text{weight in kg} \times \text{duration in hours}
\]

First, convert the weight from pounds to kilograms:

\[
154 \text{ lbs} \div 2.2 \approx 70 \text{ kg}
\]

Next, convert the duration from minutes to hours:

\[
30 \text{ minutes} \div 60 = 0.5 \text{ hours}
\]

Now, apply these values to the formula:

\[
\text{Calories burned} = 3.8 \times 70 \text{ kg} \times 0.5 \text{ hours}
\]

Calculating this gives:

\[
\text{Calories burned} = 3.8 \times 70 \times 0.5 = 133
\]

So, a 35-year-old weighing 154 pounds would burn approximately **133 calories** walking at a moderate pace for 30 minutes on a treadmill.