Please use this identifier to cite or link to this item: https://ahro.austin.org.au/austinjspui/handle/1/16267
Title: Field walking tests are reliable and responsive to exercise training in people with non-cystic fibrosis bronchiectasis
Austin Authors: Lee, Annemarie L;Cecins, Nola;Holland, Anne E ;Hill, Catherine J ;McDonald, Christine F ;Burge, Angela T ;Rautela, Linda ;Thompson, Philip J;Stirling, Robert G;Jenkins, Sue
Affiliation: Physiotherapy, Alfred Health, Melbourne, Victoria, Australia
Physiotherapy, La Trobe University, Melbourne, Victoria, Australia
Allergy, Immunology and Respiratory Medicine, Alfred Health, Melbourne, Victoria, Australia
Institute for Breathing and Sleep, Austin Health, Heidelberg, Victoria, Australia
Physiotherapy, Austin Health, Heidelberg, Victoria, Australia
Respiratory and Sleep Medicine, Austin Health, Heidelberg, Victoria, Australia
Physiotherapy, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
Lung Institute of Western Australia, Nedlands, Western Australia, Australia
Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
Community Physiotherapy Services, Curtin University,Perth, Western Australia, Australia
Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia
Issue Date: Nov-2015
Publication information: Journal of Cardiopulmonary Rehabilitation & Prevention 2015; 35(6): 439-445
Abstract: PURPOSE: The 6-Minute Walk Test (6MWT) and Incremental Shuttle Walk Test (ISWT) are used to assess exercise capacity, but the reliability and responsiveness of these tests in individuals with non-cystic fibrosis (CF) bronchiectasis have not been determined. This study aimed to determine the reliability and responsiveness of both tests in adults with non-CF bronchiectasis. METHODS: Eighty-five participants completed 2 6MWTs and 2 ISWTs in random order. Testing was repeated at the conclusion of an 8-week intervention period of exercise training. Reliability was assessed using intraclass correlation coefficients (ICC) and Bland-Altman analysis. Responsiveness was measured by effect size (ES) and standardized response mean (SRM). RESULTS: At baseline, test-retest reliability was high for both tests (ICC ≥ 0.95). The mean (95% CI) increase in the 6MWT from test 1 to test 2 was 20 m (13-26 m): 3% (0-5%) change. The mean (95% CI) increase in the ISWT was 15 m (4-25m): 4% (2-6%) change. A significant learning effect persisted after 8 weeks for the 6MWT (P = .04), but not the ISWT (P = .61). The 6MWT ES was 0.32 and SRM was 0.68; for the ISWT, ES was 0.42 with SRM of 0.71. CONCLUSION: The 6MWT and ISWT are reliable measures of exercise capacity in non-CF bronchiectasis and responsive to exercise training. The small learning effect in both measures at baseline suggests that 2 of each test are necessary to correctly assess exercise capacity. Completion of 2 6MWTs at followup may minimize the risk of underestimating a treatment effect. TRIAL REGISTRATION: ClinicalTrials.gov NCT00885521.
URI: http://ahro.austin.org.au/austinjspui/handle/1/16267
DOI: 10.1097/HCR.0000000000000130
PubMed URL: https://pubmed.ncbi.nlm.nih.gov/26252343
Type: Journal Article
Subjects: Bronchiectasis
Exercise Test
Oxygen Consumption
Exercise Tolerance
Appears in Collections:Journal articles

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