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Reproducibility of Doppler measures of ventricular function during maximal upright cycling

Published online by Cambridge University Press:  23 August 2010

Thomas W. Rowland  and
Michael E. Willers
Thomas W. Rowland*
Affiliation:
Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts, United States of America
Michael E. Willers
Affiliation:
Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts, United States of America
*
Correspondence to: T. Rowland, MD, Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts 01199, United States of America. Tel: 413 794-7349; Fax: 413 794 7140; E-mail: Thomas.rowland@bhs.org
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Abstract

Echocardiographic measures of ventricular function during exercise may prove useful in assessing myocardial health. This study examined test–retest reproducibility of measurements of Doppler mitral flow velocity (E-wave) and myocardial tissue Doppler imaging (E′-, S-waves) during a progressive maximal upright cycle test in 12 healthy lean adolescent males. Measurements were taken as subjects pedalled to exhaustion with 35 watt work increments in two separate trials. We observed no significant differences in mean values at rest, submaximal (70 watts) exercise, or maximal exercise for all three variables. Coefficients of variation at maximal exercise were 5.3%, 7.4%, and 8.1% for mitral E, tissue Doppler-S, and tissue Doppler-E′, respectively. These findings indicated acceptable levels of reproducibility of Doppler ultrasound techniques for assessing ventricular systolic and diastolic functional response to maximal exercise in young lean male subjects.

Keywords

Cardiac functionexercise testingechocardiography
Type
Original Articles
Information
Cardiology in the Young , Volume 20 , Issue 6 , December 2010 , pp. 676 - 679
Copyright
Copyright © Cambridge University Press 2010

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