Source: Annual Congress 2010 - Exercise training: new groups, new methods and outcomes
Disease area: Airway diseases

Abstract

When a second incremental shuttle walk test (ISWT) was performed before a pulmonary rehabilitation program (PRP), there was an increase in walk distance demonstrated (Singh et al, 1992). The study aimed to determine (i) if there was an increase in walk distance when two ISWTs were performed for the first time following the completion of a PRP (0 months) and at 3, 6 and 12-month assessments, (ii) if using the better of two ISWTs at 0 and 12-month assessments affected the reporting of long-term program outcomes. This was a prospective, longitudinal, repeated measures study in which subjects with COPD performed two ISWTs at 0 months, three, six and twelve months. Forty-eight subjects (22 males) [mean (SD): FEV₁59 (19) % pred, age 65 (8) years, BMI 26 (6) (kg/m²)] completed two ISWTs at all assessments. There was a significant increase in walk distance between two ISWTs performed at 0 months (17 metres (95% CI: 7 to 26) and at three months (18 metres (95% CI: 6 to 30), but not at six and 12 months. There was no significant difference to long-term program outcomes when the better ISWT at 0 months was compared to either the first ISWT or the better ISWT at 12 months. The increase in walk distance when a second ISWT was performed at 0 and three months indicates that it is necessary to perform two ISWTs when subjects are naïve to the test and at the three-month follow-up. If the better of two ISWT is used as the baseline measure, only one ISWT is required at 12-month assessment to accurately reflect program outcomes if there has been at least one interim ISWT assessment

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Citations should be made in the following way:
L. Spencer, J. Alison, Z. McKeough (Sydney, Australia). Evaluating the need for two incremental shuttle walk tests after pulmonary rehabilitation and at follow-up assessments in COPD. Eur Respir J 2010; 36: Suppl. 54, 4887

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