Standing up while deeply inhaling causes a drop in blood pressure
the verdict
SUPPORTED
the evidence backs this
confidence 90/100
Evidence regarding cardiovascular physiology indicates that postural changes combined with deep inspiration engage the respiratory and autonomic pumps, affecting venous return and blood pressure regulation.
Evidence for · 2
Spaceflight alters autonomic regulation of arterial pressure in humans
1994 · cited by 225
Demonstrates that postural shifts and changes in intrathoracic pressure heavily influence autonomic regulation of arterial pressure.
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More for · 1
Optimizing the respiratory pump: harnessing inspiratory resistance to treat systemic hypotension.
2011 · cited by 54
Explains how deep inspiration and the respiratory pump dynamically alter intrathoracic pressure and circulatory mechanics.