Myocardial Adaptation to Short-term High-intensity Exercise in Highly Trained Athletes

Tomas G. Neilan, Thanh Thao Ton-Nu, Davinder S. Jassal, Zoran B. Popovic, Pamela S. Douglas, Elkan F. Halpern, Jane E. Marshall, James D. Thomas, Michael H. Picard, Danita M. Yoerger, Malissa J. Wood*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We aimed to clarify the myocardial adaptation to short-term high-intensity exercise among trained athletes. We screened 17 participants in the 2004 World Indoor Rowing Championships before and after a 2000-m sprint. Echocardiography included standard measurements and tissue Doppler-derived strain (ε), strain rate, and 2-dimensionally derived speckle-tracking imaging for left ventricular (LV) torsion. LV volumes and ejection fraction were unchanged after exercise. There was a reduction in early and an increase in late diastolic filling velocities and a decrease in the flow propagation velocity. Annular systolic velocities, slope of the systolic acceleration, septal and lateral ε, and speckle tracking-derived torsion were increased. The increased LV torsion was a result of increased basal and apical rotation. Right ventricular apical ε decreased. In conclusion, maximal intensity short-duration exercise was associated with attenuation of LV diastolic function, augmentation of LV systolic function, and a reduction in apical right ventricular contractility.

Original languageEnglish (US)
Pages (from-to)1280-1285
Number of pages6
JournalJournal of the American Society of Echocardiography
Volume19
Issue number10
DOIs
StatePublished - Oct 1 2006

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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