Minimum clinically important improvement for the incremental shuttle walking test
| Autor: | Paul W. Jones, Sally J Singh, Rachael A. Evans, Mike Morgan |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Male
Pulmonary and Respiratory Medicine Vital capacity medicine.medical_specialty medicine.medical_treatment Vital Capacity Walking Pulmonary Disease Chronic Obstructive FEV1/FVC ratio Patient satisfaction Forced Expiratory Volume Surveys and Questionnaires medicine Humans Pulmonary rehabilitation Aged Analysis of Variance COPD Exercise Tolerance Rehabilitation business.industry medicine.disease Shuttle walking test Treatment Outcome Patient Satisfaction Exercise Test Physical therapy Female Analysis of variance business human activities |
| Zdroj: | Thorax. 63:775-777 |
| ISSN: | 0040-6376 |
| DOI: | 10.1136/thx.2007.081208 |
| Popis: | Background: The incremental shuttle walking test (ISWT) is used to assess exercise capacity in patients with chronic obstructive pulmonary disease (COPD) and is employed as an outcome measure for pulmonary rehabilitation. This study was designed to establish the minimum clinically important difference for the ISWT. Methods: 372 patients (205 men) performed an ISWT before and after a 7-week outpatient pulmonary rehabilitation programme. After completing the course, subjects were asked to identify, from a 5-point Likert scale, the perceived change in their exercise performance immediately upon completion of the ISWT. The scale ranged from “better” to “worse”. Results: The mean (SD) age was 69.4 (8.4) years, forced expiratory volume in 1 s (FEV 1 ) 1.06 (0.53) l and FEV 1 /forced vital capacity (FVC) ratio 50.8 (18.1)%. The baseline shuttle walking test distance was 168.5 (114.6) m which increased to 234.7 (125.3) m after rehabilitation (mean difference 65.9 m (95% CI 58.9 to72.9)). In subjects who felt their exercise tolerance was “slightly better” the mean improvement was 47.5 m (95% CI 38.6 to 56.5) compared with 78.7 m (95% CI 70.5 to 86.9) in those who reported that their exercise tolerance was “better” and 18.0 m (95% CI 4.5 to 31.5) in those who felt their exercise tolerance was “about the same”. Conclusion: Two levels of improvement were identified. The minimum clinically important improvement for the ISWT is 47.5 m. In addition, patients were able to distinguish an additional benefit at 78.7 m. |
| Databáze: | OpenAIRE |
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