The 6-Minute Walk Test measures the distance a client can walk in six minutes. It is commonly used to assess functional exercise capacity, particularly in clinical and older adult populations, and is useful for tracking change over time.
A client recovering from illness, surgery or a long period of inactivity may not be ready for a maximal running test. Instead, a six-minute walk can provide practical information about functional endurance, pacing and tolerance to sustained activity. The result is easy to understand: how far the client can walk in six minutes.
The current MAT article describes the 6MWT as a safe, practical way to assess functional endurance, with distance walked as the primary score.
Test name: 6-Minute Walk Test
Also known as: 6MWT
Purpose: Assess functional exercise capacity and walking endurance
What it assesses: Distance walked in six minutes
Equipment: Measured walking course, cones, stopwatch, chair and recording system
Key finding: Total distance walked in metres
Best used with: RPE, heart rate, oxygen saturation where appropriate, symptoms and gait notes
Key limitation: Influenced by motivation, walking speed, course layout, symptoms and comorbidities
The 6MWT is a self-paced walking test where the client walks as far as possible in six minutes. It is not a maximal running test. It reflects functional exercise capacity and is commonly used in clinical, rehabilitation and older adult settings.
The American Thoracic Society published practical guidelines for the 6MWT, including indications, procedure, safety considerations and interpretation.
The 6MWT is used when functional walking capacity is more relevant or safer than maximal running performance. It can help monitor progress, document functional change, support return-to-activity planning and provide context for fatigue, breathlessness or reduced mobility.
The primary measure is total distance walked in six minutes. It reflects walking endurance, functional aerobic capacity, pacing, lower-limb capacity, balance confidence and symptom tolerance.
It does not isolate VO₂max, diagnose a condition or explain the cause of reduced walking distance on its own.
The test may be useful for older adults, rehabilitation clients, deconditioned clients, people returning to activity, and clients where walking capacity is more relevant than running capacity.
For clients with cardiopulmonary symptoms, significant medical history or abnormal vital signs, appropriate screening and supervision are important.
Flat walking course, commonly 30 m where possible
Cones or markers
Stopwatch
Chair for rest if needed
Measurz or MAT
Optional heart rate monitor
Optional pulse oximeter where clinically appropriate
RPE or breathlessness scale
Screen for safety and check whether the client is appropriate for a six-minute walking assessment.
Set up a flat, measured course. The ATS guideline commonly describes a 30 m indoor corridor, although practical settings may require a different standardised course.
Explain that the goal is to walk as far as possible in six minutes without running.
Record baseline symptoms and optional heart rate, oxygen saturation and RPE where appropriate.
Start the timer and instruct the client to begin walking.
Provide standardised encouragement and time updates if following a formal protocol.
The client may slow, stop or rest if needed, but the timer continues.
At six minutes, stop the test and record the total distance walked.
Record symptoms, RPE, heart rate, oxygen saturation if used, gait observations and reason for stopping if relevant.
The primary score is total distance walked in metres.
Greater distance generally suggests better functional walking capacity. Reduced distance may reflect deconditioning, pain, breathlessness, poor balance, low confidence, fatigue or pacing difficulty.
A meaningful change should be interpreted in context. Published minimal important difference values vary by population and condition, so avoid applying one universal change threshold to all clients.
Reference values exist for some healthy and clinical populations, but they vary by age, sex, height, body mass, condition and protocol. Use values only when they match the population and testing setup. In Measurz, repeated individual testing under the same conditions is often the most practical interpretation.
The 6MWT is supported by widely used ATS guidelines. The guideline describes standardised procedures, safety considerations and factors affecting interpretation. Reliability is strongest when course length, instructions, encouragement, footwear, assistive devices and monitoring are consistent.
Sensitivity and specificity are not applicable for routine use. The 6MWT is a functional performance test, not a stand-alone diagnostic test.
Common errors include changing the course length, using inconsistent encouragement, not recording rest breaks, failing to record assistive devices, comparing results across different settings and overlooking symptoms.
The result can be affected by motivation, learning effect, pain, balance, respiratory symptoms, cardiovascular response, medications, footwear and walking aid use.
Use the 6MWT to track functional endurance, monitor return to walking, compare pre- and post-intervention performance, assess tolerance to activity and support goal setting.
It is especially useful when running tests are too demanding or not relevant to the client’s daily function.
Record total distance, course length, number of turns, assistive device, footwear, rest breaks, heart rate, RPE, breathlessness, oxygen saturation if used, pain score, symptoms, gait notes and any safety concerns.
Track progress over time using the same course and instructions.
2-Minute Step-in-Place Test
Cooper 12-Minute Run Test
Time Trial Test
Beep Test
Fatigue
Respiratory Rate
Pulse Rate
Blood Pressure
Walking speed or gait assessment
It measures the distance a client can walk in six minutes, providing a practical measure of functional exercise capacity.
No. It is usually considered a self-paced functional test, although it can still be demanding for some clients.
Yes. They may slow or rest if needed, but the timer continues.
Normal values vary by age, sex, height, body mass and health status. Use matched reference values cautiously and prioritise individual change over time.
Record symptoms, RPE, heart rate, oxygen saturation if used, assistive device, rest breaks and gait notes.
The 6MWT measures distance walked in six minutes.
It is useful for functional endurance and rehabilitation settings.
Standardised instructions and course setup are essential.
Do not use it as a stand-alone diagnostic test.
Record symptoms and context in Measurz for safer interpretation.
ATS Committee on Proficiency Standards for Clinical Pulmonary Function Laboratories. (2002). ATS statement: Guidelines for the six-minute walk test. American Journal of Respiratory and Critical Care Medicine, 166(1), 111–117. https://doi.org/10.1164/ajrccm.166.1.at1102
Holland, A. E., Spruit, M. A., Troosters, T., Puhan, M. A., Pepin, V., Saey, D., McCormack, M. C., Carlin, B. W., Sciurba, F. C., Pitta, F., Wanger, J., MacIntyre, N., Kaminsky, D. A., Culver, B. H., Revill, S. M., Hernandes, N. A., Andrianopoulos, V., Camillo, C. A., Mitchell, K. E., ... Singh, S. J. (2014). An official European Respiratory Society/American Thoracic Society technical standard: Field walking tests in chronic respiratory disease. European Respiratory Journal, 44(6), 1428–1446. https://doi.org/10.1183/09031936.00150314
