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 language | English |
|---|---|
| Pages (from-to) | 457-461 |
| Number of pages | 5 |
| Journal | Bollettino della Societa Italiana di Biologia Sperimentale |
| Volume | 58 |
| Issue number | 8 |
| Publication status | Published - 1982 |
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Cardiac output and cardiac load during isometric exercise in man. / Veicsteinas, A.; Gussoni, M.; Margonato, V.; Ferretti, G.
In: Bollettino della Societa Italiana di Biologia Sperimentale, Vol. 58, No. 8, 1982, p. 457-461.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cardiac output and cardiac load during isometric exercise in man
AU - Veicsteinas, A.
AU - Gussoni, M.
AU - Margonato, V.
AU - Ferretti, G.
PY - 1982
Y1 - 1982
N2 - 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.
AB - 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.
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M3 - Article
C2 - 7093052
AN - SCOPUS:0019948004
VL - 58
SP - 457
EP - 461
JO - Bollettino della Societa Italiana di Biologia Sperimentale
JF - Bollettino della Societa Italiana di Biologia Sperimentale
SN - 0037-8771
IS - 8
ER -