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How Should I Use the 6 Minute Walk Test (6MWT) in a Clinical Practice?

By phos-myolyn |

The 6 Minute Walk Test (6MWT) is a widely used outcome measure designed to assess walking endurance and functional exercise capacity. While short walking tests like the 10 Meter Walk Test measure gait speed, the 6MWT provides insight into how well a patient can sustain walking over time.

In neurologic rehabilitation, this test can help clinicians understand a patient’s functional mobility, cardiovascular endurance, and community ambulation capacity.

In this blog post we will discuss:

Part I: Which Patient Populations Are Appropriate to Assess With the 6MWT?

Within neurologic physical therapy practice, the 6MWT can be used with most ambulatory patients who have goals related to improving endurance, community mobility, or walking capacity.

The test has been studied across many neurologic populations, including:

Because the test measures total distance walked in six minutes, it provides insight into a patient’s ability to sustain walking over longer distances, which is important for community mobility tasks such as grocery shopping, walking through large buildings, or navigating outdoor environments.

Use of assistive devices and orthoses

Patients may use any assistive device or bracing required for safe ambulation, including walkers, canes, or ankle-foot orthoses. As with other outcome measures, it is important to use the same assistive device during reassessments whenever possible and document the device used.

For example:

If the patient later progresses to a cane, best practice would include a reassessment using the walker for comparison with the initial test, then establish a new baseline using the cane. Depending on the patient’s status, it may be best to reassess with the new device on a separate visit, so that fatigue does not impact the patient’s performance.

Providing assistance during the test

If the patient requires assistance for balance or safety, provide the minimum level of assistance necessary and document the highest level of assistance required during the test.

For example, if the patient primarily requires CGA (contact guard assist) but has one minor loss of balance requiring MIN A (minimal assistance), document the patient as requiring MIN A.

When the 6MWT may not be appropriate

The test may not be appropriate for individuals who:

In these cases, alternative outcome measures may be more appropriate until the patient can safely ambulate longer distances.

Part II: How Do I Correctly Administer the 6MWT?

Standardized test administration is important to ensure reliable and comparable results over time.

Establish the testing environment
The test is typically performed in a 30-meter (100-foot) straight walkway with turnaround points marked at each end. Patients walk back and forth along the corridor for six minutes.

Shorter walkways can be used when space is limited, but more frequent turns may slightly reduce total distance walked.

Make note of the testing environment so it can be replicated on reassessments.

Test administration

The patient is instructed to walk as far as possible in six minutes. Unlike short walking tests that emphasize speed, the goal of the 6MWT is to measure sustained functional walking capacity.

Provide the following instructions to the patient:

“The aim of this test is to walk as far as possible for 6 minutes. [Instruct the patient on the walking path]. I will let you know as each minute goes past, and then at 6 minutes I will ask you to stop. 6 minutes is a long time to walk, so you will be exerting yourself. You are permitted to slow down, to stop, and to rest as necessary. You may stand and rest, but please resume walking as soon as you are able. Remember that the objective is to walk AS FAR AS POSSIBLE for 6 minutes, but don’t run or jog.” (Pulmonary Rehabilitation Toolkit, n.d.)

During the test:

At the end of six minutes, record the total distance walked in meters.

Standardized encouragement

Minimal, standardized encouragement is recommended to maintain consistency across tests. For example:

Encouragement should be given at regular intervals if used. Limit any other communication.

Monitoring patient safety

Because the test measures endurance, clinicians should monitor for signs of excessive fatigue or cardiopulmonary stress. Depending on the patient population, clinicians may also monitor vitals pre/post:

Part III: Normative Values, MDC, and MCID

Understanding normative walking distances and meaningful change thresholds can help clinicians interpret results and assess the effectiveness of treatment interventions.

Normative Values for Healthy Adults

Healthy adults typically walk approximately 400–700 meters during the 6MWT, although distance decreases somewhat with age.

Average distances reported in healthy adults include:

AgeMale (in meters)Female (in meters)
60-69572538
70-79527471
80-89417392

Normative values can vary depending on height, sex, and fitness level.

For a more precise “predicated” distance, consider using the Enright Equation:

Interpreting 6MWT Performance

The 6MWT reflects a combination of factors including:

In neurologic rehabilitation, improvements in 6MWT distance often reflect improvements in functional walking capacity and improved access to community environments.

Minimal Detectable Change (MDC) and Minimally Clinically Important Difference (MCID)

Both values help clinicians determine whether an intervention is producing true improvement.

Stroke

Commonly reported values:

MDC:

MCID:

Spinal Cord Injury

Reported values in individuals with incomplete spinal cord injury include:

MDC:
≈ 45–60 meters

MCID:
≈ 45 meters

Multiple Sclerosis

In individuals with multiple sclerosis:

MDC:
≈ 82-92 meters or 20% change

MCID:
≈ 55–76 meters

Because fatigue is a major limiting factor in MS, the 6MWT is often used alongside other outcome measures such as the Timed 25-Foot Walk or Multiple Sclerosis Walking Scale-12.

Parkinson’s Disease

For individuals with Parkinson’s disease:

MDC:
≈ 82 meters

Brain Injury

In individuals with traumatic brain injury:

MDC:
≈ 36–45 meters

Sample 6MWT Goals in Neurologic Rehabilitation

When writing goals based on the 6MWT, it is helpful to include:

When writing goals, consider the available MDC and MCID values. MDC can help guide shorter-term goals that reflect measurable change, while MCID may be better suited for longer-term goals focused on meaningful functional improvement.

Below are several examples across different clinical scenarios.

Example 1: Improving Household Mobility

Goal: Patient will increase 6MWT from 50m (with three standing rest breaks) to 75m with a rolling walker and no more than minimal assistance and two standing rest breaks, demonstrating improved activity tolerance for navigating the home and day rehabilitation environments.

Example 2: Transitioning to Community Ambulation

Goal: Patient will increase 6MWT from 306 to 350m using a cane with contact guard assist, meeting MCID for post-CVA, in order to improve functional capacity to increase independence with grocery shopping within 4 weeks.

Key Takeaways

The 6 Minute Walk Test is a valuable outcome measure because it:

When used alongside measures of gait speed such as the 10 Meter Walk Test, clinicians can gain a more complete understanding of a patient’s walking ability, endurance, and functional mobility.

References

American Thoracic Society. (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

Bohannon, R. W., & Crouch, R. (2017). Two-minute walk test and six-minute walk test: Reference equations for healthy adults. Journal of Physical Therapy Science, 29(7), 1171–1173. https://doi.org/10.1589/jpts.29.1171

Shirley Ryan AbilityLab. (n.d.). Six minute walk test. https://www.sralab.org/rehabilitation-measures/6-minute-walk-test

Academy of Neurologic Physical Therapy. (n.d.). Core outcome measures for neurologic physical therapy practice. https://neuropt.org

SCIRE Project. (n.d.). Six minute walk test. https://scireproject.com/outcome/six-minute-walk-test/

Pulmonary Rehabilitation Toolkit. (n.d.). The six-minute walk test (6MWT). https://pulmonaryrehab.com.au/patient-assessment/assessing-exercise-capacity/the-six-minute-walk-test-6mwt