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. 1999 May;54(5):437–439. doi: 10.1136/thx.54.5.437

Validity of a modified shuttle test in adult cystic fibrosis

J Bradley 1, J Howard 1, E Wallace 1, S Elborn 1
PMCID: PMC1763768  PMID: 10212110

Abstract

BACKGROUND—The purpose of this study was to provide some evidence of the validity of a modified shuttle test (MST) by comparing performance on the MST with peak oxygen consumption (V̇O2peak) measured during a treadmill test in a group of adult patients with cystic fibrosis.
METHOD—Twenty patients with stable cystic fibrosis performed a ramped maximal treadmill test (STEEP protocol) and the MST using a randomised balanced design.
RESULTS—The relationship between the distance achieved on the MST and V̇O2peak was strong (r = 0.95, p<0.01) with 90% of the variance in V̇O2peak explained by the variance in MST distance. The relationship was represented by the regression equation (with 95% confidence intervals) V̇O2peak = 6.83 (2.85 to 10.80) + 0.028 (0.019 to 0.024)× MST distance.
CONCLUSION—This study provides evidence of the construct validity of the MST as an objective measure of exercise capacity in adults with cystic fibrosis.



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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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