Six-minute walk distance in patients with chronic obstructive pulmonary disease

Andrianopoulos, Vasileios, Holland, Anne, Singh, Sally, Franssen, Frits, Pennings, Herman-Jan, Michels, Arent, Smeenk, Frank, Vogiatzis, Ioannis, Wouters, Emiel and Spruit, Martijn (2015) Six-minute walk distance in patients with chronic obstructive pulmonary disease. Chronic Respiratory Disease, 12 (2). pp. 111-119. ISSN 1479-9723

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Official URL: https://doi.org/10.1177/1479972315575201

Abstract

The use of different 6-min walk distance (6MWD) reference equations probably results in different predicted 6MWD reference values. We wished to investigate the impact of several 6MWD reference equations for adults in patients with chronic obstructive pulmonary disease (COPD) and factors accountable for different 6MWD% predicted values. Twenty-two 6MWD reference equations were applied to a data set of 2757 patients with COPD. The predicted 6MWD reference value of Troosters and colleagues was used as the point of reference. Four out of 21 remaining equations resulted in comparable 6MWD% predicted, 16 equations resulted in significantly higher 6MWD% predicted and 1 equation resulted in a significantly lower 6MWD% predicted. Similar differences in 6MWD% predicted were observed after stratification by sex. Body mass index and global initiative for chronic obstructive lung disease (GOLD) stage classification demonstrated varying results within and between the groups; 9 out of 21 equations resulted in comparable 6MWD% predicted in underweight patients but only 1 equation demonstrated comparable result in obese. Eight equations in GOLD I, whilst 5 out of 21 equations in GOLD IV resulted in comparable 6MWD% predicted. Existing 6MWD reference equations will give varying results. The choice of 6MWD reference equation should consider the consistency of 6-min walk test operating procedures and at least be specific for the country/region of origin.

Item Type: Article
Uncontrolled Keywords: COPD, 6-min walk test, 6MWD reference equations, 6MWD predicted values, exercise capacity
Subjects: B900 Others in Subjects allied to Medicine
C600 Sports Science
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Ay Okpokam
Date Deposited: 15 Jan 2018 14:36
Last Modified: 15 Jan 2018 14:36
URI: http://nrl.northumbria.ac.uk/id/eprint/33113

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