Is rapid rise in vascular conductance at onset of dynamic exercise due to muscle pump?

  title={Is rapid rise in vascular conductance at onset of dynamic exercise due to muscle pump?},
  author={Don D. Sheriff and Loring B. Rowell and Allen M. Scher},
  journal={The American journal of physiology},
  volume={265 4 Pt 2},
We tested the hypothesis that rapid increases in muscle blood flow and vascular conductance (C) at onset of dynamic exercise are caused by the muscle pump. We measured arterial (AP) and central venous pressure (CVP) in nine awake dogs, eight with atrioventricular block, pacemakers, and ascending aortic flow probes for control of cardiac output (CO) (2 also had terminal aortic flow probes). One dog had only an iliac artery probe. At exercise onset (0 and 10% grade, 4 mph) C and CVP rose to early… CONTINUE READING


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