Comparison of the 6-minute walk distance test performed on a non-motorised treadmill and in a corridor in healthy elderly subjects
2010 (English)In: Physiotherapy, ISSN 0031-9406, E-ISSN 1873-1465, Vol. 96, no 3, 234-239 p.Article in journal (Refereed) Published
OBJECTIVE: To compare the 6-minute walk distance (6MWD) test performed on a non-motorised treadmill (6MWD-T) with the 6MWD test performed in a corridor (6MWD-C) in healthy elderly subjects.
PARTICIPANTS: Sixteen healthy elderly individuals.
DESIGN: Participants performed three 6MWD-T tests and three 6MWD-C tests on two different days.
OUTCOME MEASURES: Distance walked was recorded in metres. Perceived exertion and leg fatigue were rated on the modified Borg scale before and after each test.
RESULTS: Using the Bland and Altman limits of agreement analysis method, the mean difference between the two methods was 153.3m (limits of agreement: 28 to 278). The mean difference between days 1 and 2 for the 6MWD-C test was -7.2m (limits of agreement: -45.4 to 30.8), and the mean difference between days 1 and 2 for the 6MWD-T test was -1.6m (limits of agreement: -64.0 to 60.7). The mean difference between the first and second repetitions of the 6MWD-C test was -5m (limits of agreement: -41 to 31), and the mean difference between the first and second repetitions of the 6MWD-T test was -17m (limits of agreement: -85 to 51).
CONCLUSIONS: The 6MWD-C and 6MWD-T tests are not interchangeable. However, the results showed good test-retest reliability between days and between test repetitions for both tests. Therefore, the 6MWD-T test may offer an alternative option to the 6MWD-C test when a 30-m corridor is not available. These findings may have implications for execution of the 6MWT-T test within cardiac and pulmonary rehabilitation.
Place, publisher, year, edition, pages
2010. Vol. 96, no 3, 234-239 p.
Research subject Physiotherapy
IdentifiersURN: urn:nbn:se:umu:diva-35569DOI: 10.1016/j.physio.2009.11.015ISI: 000281889800008PubMedID: 20674656OAI: oai:DiVA.org:umu-35569DiVA: diva2:345132