Why the study?
Does isometric handgrip exercise alter left ventricular performance in normal adults?
Does isometric handgrip exercise alter left ventricular performance in normal adults?
In normal adults, isometric handgrip exercise increases afterload and heart rate without promoting the contractile state, suggesting a compensatory increase in wall stress or thickness.
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Isometric handgrip should not yet alter LV performance assessment in practice; hypothesis-generating for contractile response in normals.
Isometric handgrip exercise were performed to evaluate the left ventricular performances in fifteen normal adults by echocardiography.The following parameters increased significantly during isometric handgrip exercise. blood pressure, heart rate, cardiac index, stroke work index, contractile index.The normal hearts responded to the increase of afterload during isometric exercise by increased heart rate but the promotion of contractile state was not seen, so it was thought that the wall stress or the wall thickness increased.
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Mamoru Tago (1977) studied this question.
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