'Paradoxical' reduction in postexercise ejection time and increased transthoracic impedance

Y. Nakamura, P. Kotilainen, B. Haffty, R. Jolda, R. Bishop, D. Spodick

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Despite decreasing heart rate, left ventricular ejection time (LVET) transiently falls immediately following bicycle exercise. In seven normal, untrained subjects LVET decreases at 15 s postexercise corresponded (r = 0.78) with an increase in transthoracic electrical impedance (Z) consistent with decreased venous return to the thorax. Because the determinants of LVET are stroke volume (SV) and ejection rate, the ΔZ implies that decreased SV contributed to the 'paradoxical' fall in LVET.

Original languageEnglish (US)
Pages (from-to)1002-1004
Number of pages3
JournalUnknown Journal
Volume45
Issue number6
DOIs
StatePublished - 1978

All Science Journal Classification (ASJC) codes

  • Endocrinology
  • Physiology

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