How To Calculate 6 Minute Walk Test

6 Minute Walk Test Formula:

\[ Score = \frac{Distance}{Age/Gender\ Norms} \]

Predicted Norms:

Score (% of Predicted):

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1. What is the 6 Minute Walk Test?

The 6 Minute Walk Test (6MWT) is a submaximal exercise test that measures functional exercise capacity by assessing the total distance a person can walk in six minutes on a flat, hard surface.

2. How Does the Calculator Work?

The calculator uses the 6 Minute Walk Test formula:

\[ Score = \frac{Distance}{Age/Gender\ Norms} \]

Where:

\( Distance \) — Measured walked distance in meters
\( Age/Gender\ Norms \) — Predicted distance based on age in years and gender
Male predicted norms: 867 - (5.71 × age)
Female predicted norms: 525 - (2.86 × age)

Explanation: The test measures functional exercise capacity by comparing the actual distance walked to predicted norms based on age and gender.

3. Importance of Functional Exercise Capacity

Details: The 6MWT is widely used in clinical practice to assess functional capacity, monitor disease progression, and evaluate treatment effectiveness in various conditions including cardiopulmonary diseases, arthritis, and neurological disorders.

4. Using the Calculator

Tips: Enter the total distance walked in meters, age in years, and select gender. The calculator will provide predicted norms and calculate the percentage of predicted performance.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal 6-minute walk distance?
A: Normal distances vary by age and gender, but generally range from 400-700 meters for healthy adults. Scores above 80% of predicted are considered normal.

Q2: How should the test be administered?
A: The test should be conducted on a 30-meter straight course with standardized instructions and encouragement. Patients should wear comfortable clothing and shoes.

Q3: What factors can affect 6MWT results?
A: Factors include age, height, weight, comorbidities, motivation, learning effect, and environmental conditions like temperature and humidity.

Q4: When is the 6MWT clinically useful?
A: It's useful for assessing functional status in COPD, heart failure, pulmonary hypertension, pre-operative evaluation, and rehabilitation progress monitoring.

Q5: What are the contraindications for 6MWT?
A: Absolute contraindications include unstable angina, recent myocardial infarction, resting heart rate >120, systolic BP >180, or diastolic BP >100 mmHg.