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Wolverhampton Intellectual Repository and E-Theses > Research Institutes > Research Institute in Healthcare Science > Sport, Exercise and Health Research Group > Cardiorespiratory measurements during field tests in CF: Use of an ambulatory monitoring system

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/116843
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Title: Cardiorespiratory measurements during field tests in CF: Use of an ambulatory monitoring system
Authors: Bradley, Judy M.
Kent, Lisa
O'Neill, Brenda
Nevill, Alan M.
Boyle, Lesley
Elborn, J. Stuart
Citation: Pediatric Pulmonology
Publisher: Wiley-Liss
Journal: Pediatric Pulmonology
Issue Date: 2010
URI: http://hdl.handle.net/2436/116843
DOI: 10.1002/ppul.21360
Additional Links: http://doi.wiley.com/10.1002/ppul.21360
Abstract: Respiratory inductive plethysmography (e.g., LifeShirt) may offer in-depth study of the cardiorespiratory responses during field exercise tests. The aims of this study were to assess the reliability, discriminate validity, and responsiveness of cardiorespiratory measurements recorded by the LifeShirt during field exercise tests in adults with CF. To assess reliability and discriminate validity, participants with CF and stable lung disease and healthy participants performed the 6-Minute Walk Test (6MWT) and Modified Shuttle Test (MST) on two occasions. To assess responsiveness, participants with CF experiencing an exacerbation performed the 6MWT at the start and end of an admission for intravenous antibiotics. The LifeShirt was worn during all exercise tests. Reliability and discriminate validity were assessed in 18 participants with CF (mean (SD) age: 26 (10) years; FEV1 %predicted: 69.2 (23)%) and 18 healthy participants (age: 24 (5) years, FEV1 %predicted: 92 (8)%). There was no difference in 6MWT and MST performance between days and reliability of cardiorespiratory measures was acceptable (bias: P > 0.05; CV < 10%). Participants with CF demonstrated a significantly greater response to exercise (e.g., ventilation, respiratory rate) compared to healthy participants indicating discriminate validity. Responsiveness was assessed in 12 participants with CF: clinical measurements and 6MWT performance improved (61 (81) min; P < 0.05) however, cardiorespiratory measurements recorded by the LifeShirt remained the same (bias: P > 0.05; CV < 10%). This study provides evidence that cardiorespiratory responses can be measured non-invasively during field exercise tests in adults with CF. Reliability and discriminate validity of key cardiorespiratory measurements recorded by the LifeShirt were demonstrated. Some information on responsiveness is reported.
Type: Article
Language: en
Description: Article first published online: 21 OCT 2010
Keywords: Respiratory inductive plethysmography
LifeShirt
Cystic fibrosis
6-Minute Walk Test
Modified Shuttle Test
ISSN: 87556863
Appears in Collections: Sport, Exercise and Health Research Group

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