Breathing affects venous return from legs in humans.

@article{Willeput1984BreathingAV,
  title={Breathing affects venous return from legs in humans.},
  author={R Willeput and C Rondeux and Andr{\'e} De Troyer},
  journal={Journal of applied physiology: respiratory, environmental and exercise physiology},
  year={1984},
  volume={57 4},
  pages={971-6}
}
It is conventionally believed that venous return to the heart increases during inspiration through the combined effect of the fall in intrathoracic pressure and the squeezing of the splanchnic veins by diaphragm descent. In the present study we have tested the hypothesis that in humans venous return from the legs decreases, rather than increases, during inspiration as a result of the rise in abdominal pressure. Ten normal subjects were examined in recumbent posture during various respiratory… CONTINUE READING
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