As a pa of space-research program , a physiologist was asked to investigate the effect of flight-induced stress on blood pressure. Accordingly, the blood pressure of the cosmonauts were to be measured twice: once before the take-off and once after the spacecraft entered the designated orbit around the eah. For a proper comparison, the preflight blood pressure should be recorded in which position?

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Vikas Bhardwaj
Medical Technologist, AIIMS New Delhi
Updated: Apr 17, 2026