The objective would be to elicit the baroreceptor reflex as the receptors detect an apparent high pressure state due to the externally applied force and causes reflex bradycardia and / or hypotension, leading to decreased blood supply to the brain and syncope.
12.
Still, the blood pressure does not normally fall very much, because it immediately triggers a vasoconstriction ( baroreceptor reflex ), pressing the blood up into the body again . ( Often, this mechanism is exaggerated and is why diastolic blood pressure is a bit higher when a person is standing up, compared to a person in the horizontal position . ) Therefore, a secondary factor that causes a greater than normal fall in blood pressure is often required.
