Kilojoules Burned During Exercise Calculator

Kilojoules Burned Formula:

\[ kJ = MET \times Weight \times Time \times 4.184 \]

Kilojoules Burned:

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1. What is the Kilojoules Burned Formula?

The Kilojoules Burned formula calculates the energy expenditure during physical activity using MET values, weight, and exercise duration. It provides an estimate of kilojoules burned based on metabolic equivalent of task.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ kJ = MET \times Weight \times Time \times 4.184 \]

Where:

\( MET \) — Metabolic Equivalent of Task (unitless)
\( Weight \) — Body weight in kilograms (kg)
\( Time \) — Exercise duration in hours
\( 4.184 \) — Conversion factor to kilojoules

Explanation: The formula multiplies the MET value (intensity of activity) by weight and time, then converts to kilojoules using the standard conversion factor.

3. Importance of Energy Expenditure Calculation

Details: Calculating energy expenditure is crucial for weight management, exercise planning, and understanding the metabolic cost of physical activities for fitness and health monitoring.

4. Using the Calculator

Tips: Enter MET value (unitless), weight in kilograms, and time in hours. All values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What are MET values?
A: MET (Metabolic Equivalent of Task) is a unit that represents the energy cost of physical activities. 1 MET is roughly equivalent to the energy expended while sitting quietly.

Q2: How accurate is this calculation?
A: This provides an estimate based on average values. Individual variations in metabolism, fitness level, and exercise efficiency can affect actual energy expenditure.

Q3: Where can I find MET values for different activities?
A: MET values are available in compendiums of physical activities and various health/fitness resources that categorize activities by intensity level.

Q4: Why use 4.184 as the conversion factor?
A: 4.184 is the conversion factor from kilocalories to kilojoules (1 kcal = 4.184 kJ), as MET values are typically based on kcal expenditure.

Q5: Can this calculator be used for weight loss planning?
A: Yes, it can help estimate energy expenditure for exercise activities, which is useful for creating calorie deficit plans in weight management programs.