Cardiac output and cardiac load during isometric exercise in man

A. Veicsteinas, M. Gussoni, V. Margonato, G. Ferretti

Research output: Contribution to journalArticle

Abstract

Cardiac output, heart rate, arterial pressure and indirect left ventricular oxygen consumption have been measured in three subjects during isometric contractions (50 - 170 kg) of the plantar flexors until fatigue was reached and during walking on a treadmill. Cardiac output was linearly related to V(O2) for both exercises. However, for the same V(O2) Q was four times higher during isometric effort than during walking. In the last 15 s of static tasks, HR was linearly increasing to V(O2) and AP reached values of 160 and 125 Torr (systolic and diastolic, respectively) independently of V(O2). For comparable V(O2) in static and isotonic exercises myocardial O2 uptake was doubled during isometric rather than during the isotonic exercise.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalBollettino della Societa Italiana di Biologia Sperimentale
Volume58
Issue number8
Publication statusPublished - 1982

ASJC Scopus subject areas

  • Medicine(all)

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