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The 6-minute walk distance cannot be accurately assessed at home in people with COPD.

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Title:	The 6-minute walk distance cannot be accurately assessed at home in people with COPD.
Authors:	Holland, Anne E. (AUTHOR), Rasekaba, Tshepo (AUTHOR), Fiore, Julio F. (AUTHOR), Burge, Angela T. (AUTHOR), Lee, Annemarie L. (AUTHOR)
Source:	Disability & Rehabilitation. Jun2015, Vol. 37 Issue 12, p1102-1106. 5p.
Abstract:	Purpose: The 6-minute walk test (6MWT) is commonly used to measure exercise capacity in COPD, but it is unclear if this test is accurate when performed at home. This study aimed to determine whether exercise capacity can be accurately assessed at home using the 6MWT in COPD. Methods: A total of 19 participants with stable COPD (mean [SD] FEV1/FVC 52[13]) undertook the 6MWT at home and at the hospital, in random order, with two tests performed on each occasion. Hospital tests were conducted on a 30-metre walking track whilst home tests (indoor or outdoor) were conducted using the longest available track. Agreement for 6-minute walk distance (6MWD) was examined using the Bland and Altman method. Results: The track length at home was mean [SD] of 17[9] m. The home 6MWD was shorter than the hospital 6MWD (mean 30 m shorter, limits of agreement −167 to 102 m). For the home tests, a shorter track length was associated with a greater reduction in 6MWD ( rs = 0.59, p = 0.01), but not an increased number of turns ( rs = −0.41, p = 0.08). Conclusions: The 6MWD underestimates exercise capacity when conducted at home in COPD. Alternative tests suitable for the home environment should be considered if a comprehensive assessment is to be performed at home. [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

Description
Abstract:	Purpose: The 6-minute walk test (6MWT) is commonly used to measure exercise capacity in COPD, but it is unclear if this test is accurate when performed at home. This study aimed to determine whether exercise capacity can be accurately assessed at home using the 6MWT in COPD. Methods: A total of 19 participants with stable COPD (mean [SD] FEV1/FVC 52[13]) undertook the 6MWT at home and at the hospital, in random order, with two tests performed on each occasion. Hospital tests were conducted on a 30-metre walking track whilst home tests (indoor or outdoor) were conducted using the longest available track. Agreement for 6-minute walk distance (6MWD) was examined using the Bland and Altman method. Results: The track length at home was mean [SD] of 17[9] m. The home 6MWD was shorter than the hospital 6MWD (mean 30 m shorter, limits of agreement −167 to 102 m). For the home tests, a shorter track length was associated with a greater reduction in 6MWD ( rs = 0.59, p = 0.01), but not an increased number of turns ( rs = −0.41, p = 0.08). Conclusions: The 6MWD underestimates exercise capacity when conducted at home in COPD. Alternative tests suitable for the home environment should be considered if a comprehensive assessment is to be performed at home. [ABSTRACT FROM AUTHOR]
ISSN:	09638288
DOI:	10.3109/09638288.2014.956815