Kinetics of Left Ventricular Strains and Torsion During Incremental Exercise in Healthy Subjects: The Key Role of Torsional Mechanics for Systolic-Diastolic Coupling

Kinetics of Left Ventricular Strains and Torsion During Incremental Exercise in Healthy Subjects: The Key Role of Torsional Mechanics for Systolic-Diastolic Coupling

The dynamics of systolic and diastolic strains and torsional mechanics of the left ventricle (LV) and their relation to diastolic filling never have been evaluated at various exercise intensities. Speckle tracking echocardiography was performed in 20 healthy sedentary subjects at rest and during a p...

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Veröffentlicht in:Circulation. Cardiovascular imaging 2010-09, Vol.3 (5), p.586-594
Hauptverfasser: DOUCENDE, Grégory, SCHUSTER, Iris, RUPP, Thomas, STARTUN, Aliona, DAUZAT, Michel, OBERT, Philippe, NOTTIN, Stéphane
Format: Artikel
Sprache:eng
Schlagworte:
Adaptation, Physiological
Adolescent
Adult
Biological and medical sciences
Biomechanical Phenomena
Blood Pressure
Cardiac Output
Cardiology. Vascular system
Diastole
Echocardiography, Doppler
Exercise
Exercise Test
France
Heart Rate
Heart Ventricles - diagnostic imaging
Humans
Kinetics
Male
Medical sciences
Myocardial Contraction
Reference Values
Systole
Torsion, Mechanical
Ventricular Function, Left
Young Adult
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Zusammenfassung:The dynamics of systolic and diastolic strains and torsional mechanics of the left ventricle (LV) and their relation to diastolic filling never have been evaluated at various exercise intensities. Speckle tracking echocardiography was performed in 20 healthy sedentary subjects at rest and during a progressive submaximal exercise test at 20%, 30%, and 40% of maximal aerobic power. LV twist increased progressively with exercise intensity (10.5 ± 3.2 to 15.8 ± 4.5°; P
ISSN:1941-9651
1942-0080
DOI:10.1161/CIRCIMAGING.110.943522