Left ventricular dynamics during strenuous isometric exercise in marathon runners, weight lifters and healthy sedentary men: comparative echocardiographic study.
Global and segmental left ventricular dynamics during strenuous large-muscle isometric exercise were compared between endurance and static type professional athletes and sedentary men. Using a trunk dynamometer and supine echocardiography, only the weight lifters manifested increased (p < 0.01) wall thickness during both diastole and systole, resulting in decreased left ventricular volume at end systole. These group-related differences would suggest a causal relationship between chronic intensive weight-lifting training and efficient myocardial dynamics at the time of strenuous isometric exercise.
Ben-Ari
E
E
Cardiac Rehabilitation Institute, Chaim Sheba Medical Center, Tel Hashomer, Israel.
Gentile
R
R
Feigenbaum
H
H
Hess
D
D
Fisman
E Z
EZ
Pines
A
A
Drory
Y
Y
Motro
M
M
D000328:Adult; D002312:Cardiomyopathy, Hypertrophic / Q000000981:diagnostic imaging / Q000503:physiopathology; D004452:Echocardiography / Q000295:instrumentation*; D005080:Exercise Test / Q000295:instrumentation; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D010865:Pilot Projects; D012420:Running / Q000502:physiology*; D016277:Ventricular Function, Left / Q000502:physiology*; D014891:Weight Lifting / Q000502:physiology*