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Does mental arithmetic before head up tilt have an effect on the orthostatic cardiovascular and hormonal responses?

Goswami, Nandu ; Lackner, Helmut Karl ; Papousek, Ilona ; Montani, Jean-Pierre ; Jezova, Daniela ; Hinghofer-Szalkay, Helmut G.

In: Acta Astronautica, 2011, vol. 68, no. 9-10, p. 1589-1594

Passive head up tilt (HUT) and mental arithmetic (MA) are commonly used for providing mental and orthostatic challenges, respectively. In animal experiments, even a single exposure to a stressor has been shown to modify the response to subsequent stress stimulus. We investigated whether MA applied before HUT elicits synergistic responses in orthostatic heart rate (HR), cardiac output (CO),...