Time course of brachial artery diameter responses to rhythmic handgrip exercise in humans
نویسندگان
چکیده
منابع مشابه
Time course of brachial artery diameter responses to rhythmic handgrip exercise in humans.
OBJECTIVE Whether the dimensions of conduit arteries contribute to the time course of change in blood flow during voluntary rhythmic exercise, and the mechanisms governing such a response in humans, are not known. METHODS The time course of change in the vascular and blood flow dynamics in the brachial artery during the transition between rest and 5 min of rhythmic handgrip exercise was asses...
متن کاملHandgrip exercise increases postocclusion hyperaemic brachial artery dilatation.
OBJECTIVE To examine the effect of handgrip exercise induced ischaemia on non-invasive assessment of endothelial function in the brachial artery. DESIGN AND SETTING High frequency ultrasound was used to measure brachial artery diameter at rest and after reactive hyperaemia induced by forearm cuff occlusion with and without handgrip exercise induced ischaemia. SUBJECTS 10 healthy subjects, <...
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While the impact of changes in blood flow and shear stress on artery function are well documented, the acute effects of increases in arterial pressure are less well described in humans. The aim of this study was to assess the effect of 30 min of elevated blood pressure, in the absence of changes in shear stress or sympathetic nervous system (SNS) activation, on conduit artery diameter. Ten heal...
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UNLABELLED The reduction in nitric oxide (NO)-mediated vascular function with age has largely been determined by flow-mediated dilation (FMD). However, in light of recent uncertainty surrounding the NO dependency of FMD and the recognition that brachial artery (BA) vasodilation during handgrip exercise is predominantly NO-mediated in the young, we sought to determine the contribution of NO to B...
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The myogenic response, the inherent ability of blood vessels to rapidly respond to changes in transmural pressure, is involved in local blood flow autoregulation. Animal studies suggest that aging impairs the myogenic response. The purpose of this study was to compare the effects of changes in transmural pressure on mean blood velocity (MBV, cm/s) in young and older subjects. Twelve younger men...
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ژورنال
عنوان ژورنال: Cardiovascular Research
سال: 1997
ISSN: 0008-6363
DOI: 10.1016/s0008-6363(97)00100-4