MDCalc Formula:
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The Six Minute Walk Test is a simple exercise test that measures the distance a person can walk quickly on a flat, hard surface in six minutes. It evaluates functional exercise capacity and is commonly used in cardiopulmonary rehabilitation.
The calculator uses the MDCalc formula:
Where:
Explanation: This equation predicts the expected 6-minute walk distance based on height, age, and BMI, providing a reference value for comparison with actual test results.
Details: Calculating predicted distance helps clinicians assess patient performance relative to expected norms, monitor progress in rehabilitation, and evaluate treatment effectiveness in cardiopulmonary conditions.
Tips: Enter height in centimeters, age in years, and weight in kilograms. All values must be valid positive numbers for accurate calculation.
Q1: What is a normal 6-minute walk distance?
A: Normal values vary by age, gender, height, and weight. Generally, healthy adults walk 400-700 meters in 6 minutes.
Q2: How is BMI calculated in this formula?
A: BMI is calculated as weight in kilograms divided by height in meters squared (kg/m²).
Q3: Who should take the 6-minute walk test?
A: Patients with cardiopulmonary diseases, those undergoing rehabilitation, and individuals being evaluated for functional capacity.
Q4: What factors can affect walk test results?
A: Motivation, practice effect, comorbidities, medications, and environmental conditions can all influence test performance.
Q5: How should results be interpreted?
A: Results should be compared to predicted values and previous tests. Significant deviations may indicate functional impairment or treatment response.