2 Minute Walk Test: Difference between revisions
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Research shows the 2MWT does not discriminate as well as the longer six and 12 minute walk tests in subjects with respiratory disease<ref name=":0" />. | Research shows the 2MWT does not discriminate as well as the longer six and 12 minute walk tests in subjects with respiratory disease<ref name=":0" />. | ||
One study reported a minimum detectable change for the 2MWT | One study reported a minimum detectable change for the distance walked (DW) in the 2MWT was 42.5m<ref name=":3">Bohannon RW, Wang Y, Gershon RC. [https://www.researchgate.net/publication/269177497_Two-Minute_Walk_Test_2MWT_Performance_by_Adults_18-85_Years_Normative_Values_Reliability_and_Responsiveness Two-Minute Walk Test performance by adults 18 to 85 years: normative values, reliability, and responsiveness]. Arch Phys Med Rehab. 2015; 96:472-7. Accessed 19 February 2019.</ref>. | ||
In subjects with COPD undergoing pulmonary rehabilitation, a clinically meaningful change of 5.5m in DW has been reported<ref>Johnston KN, Potter AJ, Phillips AC. [https://www.dovepress.com/minimal-important-difference-and-responsiveness-of-2-minute-walk-test--peer-reviewed-fulltext-article-COPD Minimal important difference and responsiveness of 2-minute walk test performance in people with COPD undergoing pulmonary rehabilitation]. Int J Chron Obstruct Pulmon Dis. 2017:12 2849–2857. Accessed 19 February 2019. | |||
</ref>. | |||
=== Miscellaneous<span style="font-size: 20px; font-weight: normal;" class="Apple-style-span"></span> === | === Miscellaneous<span style="font-size: 20px; font-weight: normal;" class="Apple-style-span"></span> === | ||
Age and gender explain 51% of variance in the distance walked | Age and gender explain 51% of variance in the distance walked in the 2MWT<ref name=":1" />, i.e.older age and female gender are associated with shorter distances walker. Other studies have found some correlation between DW and height, weight, age and gender<ref name=":3" />. | ||
One study<ref name=":1" /> has shown that subjects reached 70% of their maximum heart rate which was comparable with similar testing of the 6MWT. Authors hypothesised that this could suggest that a steady state of exertion is reached after only a short period of walking, as both the two and six minute walk tests are self-paced. So the 2MWT is a useful measure instead of the 6MWT if it is not practical to perform. | One study<ref name=":1" /> has shown that subjects reached 70% of their maximum heart rate which was comparable with similar testing of the 6MWT. Authors hypothesised that this could suggest that a steady state of exertion is reached after only a short period of walking, as both the two and six minute walk tests are self-paced. So the 2MWT is a useful measure instead of the 6MWT if it is not practical to perform. | ||
Revision as of 07:31, 23 February 2019
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Objective[edit | edit source]
The Two/2 Minute Walk Test (2MWT) is a measure of self-paced walking ability and functional capacity[1], particularly for those who cannot manage the longer Six Minute Walk Test or 12 Minute Walk Test.
Intended Population[edit | edit source]
The 2MWT has been used in a variety of health conditions including COPD, lower limb amputation, neuromuscular disease, cardiac disease and the elderly[2].
Method of Use[edit | edit source]
The 2MWT requires two practice walks before it is measured due to a training effect[1][2][3].
Reference[edit | edit source]
Evidence[edit | edit source]
Reliability[edit | edit source]
Studies have shown that the 2MWT is consistently reproducible[1][2][3].
Validity[edit | edit source]
The 2MWT shows good construct validity with similar measures. The 2MWT correlates highly with the six and 12 minute walk tests indicating they are similar measures of exercise tolerance[1][4]. The 2MWT has also been shown to correlate with other gait measures such as speed, and the TUG[4].
Responsiveness[edit | edit source]
Research shows the 2MWT does not discriminate as well as the longer six and 12 minute walk tests in subjects with respiratory disease[1].
One study reported a minimum detectable change for the distance walked (DW) in the 2MWT was 42.5m[3].
In subjects with COPD undergoing pulmonary rehabilitation, a clinically meaningful change of 5.5m in DW has been reported[5].
Miscellaneous[edit | edit source]
Age and gender explain 51% of variance in the distance walked in the 2MWT[2], i.e.older age and female gender are associated with shorter distances walker. Other studies have found some correlation between DW and height, weight, age and gender[3].
One study[2] has shown that subjects reached 70% of their maximum heart rate which was comparable with similar testing of the 6MWT. Authors hypothesised that this could suggest that a steady state of exertion is reached after only a short period of walking, as both the two and six minute walk tests are self-paced. So the 2MWT is a useful measure instead of the 6MWT if it is not practical to perform.
Normative Data[edit | edit source]
One study[2] has described, with evidence, an equation to predict the DW, regardless of health condition. It takes into account age and gender. The equation is 2MWTpredicted = 252.583 - (1.165 x age) + (19.987 x gender*), where * is male= 1 and female= 0[2].
Another study[3] used the following equations for men and women, respectively, with normative values available here.
Men: 2MWTpredicted = 279.096 - (0.998 x age) - (1.426 x BMI)
Women: 2MWTpredicted = 257.177 - (0.723 x age) - (1.688 x BMI)
*where BMI is weight (in kilogram) divided by height (in meter) squared
Links[edit | edit source]
References[edit | edit source]
- ↑ 1.0 1.1 1.2 1.3 1.4 Butland RJ, Pang J, Gross ER, Woodcock AA, Geddes DM. Two-, six-, and 12-minute walking tests in respiratory disease. Br Med J (Clin Res Ed). 1982. 29; 284(6329): 1607–1608. Accessed 19 February 2019.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Selman, JPR, de Camargi AA, Santos J, Lanza FC, Dal Corso S. Reference Equation for the 2-Minute Walk Test in Adults and the Elderly. Respir Care. 2014; 59 (4): 525-530. Accessed 19 February 2019.
- ↑ 3.0 3.1 3.2 3.3 3.4 Bohannon RW, Wang Y, Gershon RC. Two-Minute Walk Test performance by adults 18 to 85 years: normative values, reliability, and responsiveness. Arch Phys Med Rehab. 2015; 96:472-7. Accessed 19 February 2019.
- ↑ 4.0 4.1 Scalzitti DA, Harwood KJ, Maring JR, Leach SJ, Ruckert EA, Costello E. Validation of the 2-Minute Walk Test with the 6-Minute Walk Test and other functional measures in persons with Multiple Sclerosis. Int J MS Care. 2018; 20(4): 158–163. Accessed 19 February 2019.
- ↑ Johnston KN, Potter AJ, Phillips AC. Minimal important difference and responsiveness of 2-minute walk test performance in people with COPD undergoing pulmonary rehabilitation. Int J Chron Obstruct Pulmon Dis. 2017:12 2849–2857. Accessed 19 February 2019.
