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a Sport and Exercise
Sciences, University of Ulster at Jordanstown, Co. Antrim BT37 0QB, UK, b Adult Cystic
Fibrosis Unit, Belfast City Hospital, Belfast, Co. Antrim BT9
7AB, UK
Correspondence to: Dr S Elborn.
Received 21 April 1998; Returned to authors 8 July 1998; Revised version received 2 October 1998; Accepted for publication 1 December 1998
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 (
O2peak)
measured during a treadmill test in a group of adult patients with
cystic fibrosis.
METHODTwenty patients
with stable cystic fibrosis performed a ramped maximal treadmill test
(STEEP protocol) and the MST using a randomised balanced design.
RESULTSThe
relationship between the distance achieved on the MST and
O2peak was strong
(r = 0.95, p<0.01) with 90% of the
variance in O2peak explained by the
variance in MST distance. The relationship was represented by the
regression equation (with 95% confidence intervals)
O2peak = 6.83 (2.85 to 10.80) + 0.028 (0.019 to 0.024) × MST distance.
CONCLUSIONThis study
provides evidence of the construct validity of the MST as an objective
measure of exercise capacity in adults with cystic fibrosis.
This article has been cited by other articles:
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  A C Young, J W Wilson, T C Kotsimbos, and M T Naughton Randomised placebo controlled trial of non-invasive ventilation for hypercapnia in cystic fibrosis Thorax, January 1, 2008; 63(1): 72 - 77. [Abstract] [Full Text] [PDF]
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 M E Dodd and S A Prasad Physiotherapy management of cystic fibrosis Chronic Respiratory Disease, July 1, 2005; 2(3): 139 - 149. [Abstract] [PDF]
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 J. Bradley, J. Howard, E. Wallace, and S. Elborn Reliability, Repeatability, and Sensitivity of the Modified Shuttle Test in Adult Cystic Fibrosis Chest, June 1, 2000; 117(6): 1666 - 1671. [Abstract] [Full Text] [PDF]
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