1. What is the Calories Burned Equation?

The calories burned equation estimates energy expenditure during walking based on metabolic equivalent (MET), body weight, and time spent walking. The calculation is adjusted for age since metabolic rate typically decreases with age.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( MET \) — Metabolic Equivalent of Task (adjusted for age)
• \( Weight \) — Body weight in kilograms
• \( Time \) — Walking time in hours

Explanation: The equation accounts for the fact that energy expenditure decreases with age through the age-adjusted MET value.

3. Importance of Age Adjustment

Details: Metabolic rate typically declines by about 0.5% per year after age 20. This calculator adjusts the MET value accordingly to provide more accurate calorie estimates for different age groups.

4. Using the Calculator

Tips: Enter your weight in kg, walking time in hours (e.g., 0.5 for 30 minutes), and your age in years. All values must be valid (weight > 0, time > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: Why does MET decrease with age?
A: As people age, they typically lose muscle mass and experience metabolic changes that reduce energy expenditure during physical activity.

Q2: How accurate is this calculator?
A: It provides a reasonable estimate for general walking. Actual calories burned may vary based on walking speed, terrain, and individual metabolism.

Q3: Does this work for running or other activities?
A: No, this calculator is specifically for walking. Different activities have different MET values.

Q4: Should I use this for weight loss planning?
A: It can help estimate calorie expenditure, but consult a healthcare professional for personalized weight loss advice.

Q5: How does weight affect calories burned?
A: Heavier individuals burn more calories doing the same activity because they're moving more mass.