The effect of exercise on large artery haemodynamics in cystic fibrosis

Hull, James, Ansley, Les, Bolton, Charlotte, Sharman, James, Knight, Roland, Cockcroft, John, Shale, Dennis and Garrod, Rachel (2011) The effect of exercise on large artery haemodynamics in cystic fibrosis. Journal of Cystic Fibrosis, 10 (2). pp. 121-127. ISSN 1569-1993

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Official URL: http://dx.doi.org/10.1016/j.jcf.2010.12.001

Abstract

Background: Adult patients with cystic fibrosis (CF) have resting abnormal large artery haemodynamics. Here, we obtain further insight in patients with CF by evaluating haemodynamic response to physiological stress.

Methods: Thirty-six stable CF patients mean (SD) age 28.9 (9.0)years and 25 controls matched for age, gender and body mass index were studied. Central haemodynamic parameters; including augmentation index (AIx) and wasted left ventricular pressure energy (Delta E(w)) were determined pre, during and post light intensity cycle ergometry.

Results: During exercise, despite a similar heart rate and blood pressure, patients had comparatively greater Delta E(w) (P=0.03) and trend towards greater AIx (P=0.07) than controls. Exercise Delta E(w) was greatest in patients with CF related diabetes (n=11). In all subjects, exercise Delta E(w) was related to age (r=0.54, P < 0.001) and FEV(1)% predicted (r=-0.32, P=0.01).

Conclusions: Adults with CF have an abnormal haemodynamic response to exercise. This finding has deleterious implications for myocardial performance.

Item Type: Article
Uncontrolled Keywords: Cardiovascular, inflammation, exercise, arterial stiffness, diabetes mellitus
Subjects: C600 Sports Science
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Ellen Cole
Date Deposited: 15 Dec 2011 11:14
Last Modified: 24 Oct 2017 11:42
URI: http://nrl.northumbria.ac.uk/id/eprint/4155

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