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Article
Reproducibility of Doppler measures of ventricular function during maximal upright cycling
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  • Thomas Rowland, MD, Baystate Health
  • Michael Willers, MD, Baystate Health
Document Type
Article, Peer-reviewed
Publication Date
12-1-2010
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.
Publication ISSN
0884-8734
Citation Information
Rowland T, Willers M. Reproducibility of Doppler measures of ventricular function during maximal upright cycling Cardiol Young 2010 Dec;20(6):676-9.