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When people are healthy, the veins below their heart constrict and the heart rate increases to minimize and compensate for the gravity effect. This is carried Nose Cone straight out involuntarily by the autonomic nervous system. The system usually requires a few seconds to fully adjust and if the compensations are too slow or inadequate, the individual will suffer reduced blood flow to the brain, dizziness and potential blackout.
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Increases in G-loading, such as routinely experienced by aerobatic or combat pilots ‘pulling Gs’, greatly increases this effect. Repositioning the body perpendicular to gravity largely eliminates the problem.Free Shipping Handheld Pulse oximeter
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