1. What Is Resting Energy Expenditure?

Resting Energy Expenditure (RDEE) represents the amount of energy your body needs to maintain basic physiological functions at rest. It accounts for approximately 60-75% of total daily energy expenditure and is influenced by factors such as weight, height, age, and gender.

2. How Does The Calculator Work?

The calculator uses the resting energy equation:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( s \) — Adjustment factor based on gender and other individual factors (unitless)

Explanation: This equation calculates the basal metabolic rate by accounting for body size, age, and individual metabolic characteristics through the s factor.

3. Importance Of Resting Energy Calculation

Details: Accurate resting energy estimation is crucial for developing appropriate nutrition plans, weight management strategies, and understanding individual metabolic needs for optimal health and performance.

4. Using The Calculator

Tips: Enter weight in kilograms, height in centimeters, age in years, and the appropriate s factor. All values must be valid positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for the s factor?
A: The s factor typically ranges from -161 to +5, with different values for males and females in various equations.

Q2: How does resting energy differ from total daily energy expenditure?
A: Resting energy is the baseline energy needed for basic bodily functions, while total daily energy includes additional energy for physical activity and food digestion.

Q3: When should resting energy be measured?
A: Ideal measurement conditions include morning fasting, after adequate rest, and avoiding strenuous exercise beforehand.

Q4: Are there limitations to this equation?
A: The equation provides an estimate and may be less accurate for individuals with extreme body compositions, certain medical conditions, or athletes.

Q5: How often should resting energy be recalculated?
A: Recalculate when significant changes occur in weight, body composition, age, or activity levels, typically every 3-6 months.