Question

Peter is a busy 40-year-old business executive. He weighs 100 kilograms (220 pounds) and is 6 feet tall (182 centimeters). He is moderately active, exercising about 4 days per week for 1 hour each session (an activity factor of 1.55). He wants to lose some weight and is willing to be on a 500-calorie deficit per day.

Calculate Peter's TDEE using the Mifflin-St. Jeor equation:

Answer 1

Peter's TDEE, calculated using the Mifflin-St. Jeor equation, is 1945.25 kcal/day. To achieve a 500-calorie deficit, he would need to consume about 1445.25 kcal/day.

Step-by-step explanation:

To calculate Peter's Total Daily Energy Expenditure (TDEE) using the Mifflin-St. Jeor equation, we need to consider his weight, height, age, and activity level. The Mifflin-St. Jeor equation for males is TDEE = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5 × activity factor.

For Peter, who is 40 years old, weighs 100 kg, is 182 cm tall, and has an activity factor of 1.55 due to exercising 4 days a week, the equation would be:

TDEE = (10 × 100 kg) + (6.25 × 182 cm) - (5 × 40 years) + 5 × 1.55.

So, Peter's TDEE is:

= (10 × 100) + (6.25 × 182) - (5 × 40) + 5 × 1.55

= 1000 + 1137.5 - 200 + 7.75

= 1945.25 kcal/day

With Peter seeking to achieve a 500 calorie deficit per day, he would need to consume 500 kcal/day less than his TDEE, meaning he could consume approximately 1445.25 kcal/day to lose weight.