Astronauts do not feel dizzy or faint during post-flight exercise, so long as they participate in certain types of exercise in space and receive IV fluids when they return to earth. The findings could have implications for people postural orthostatic tachycardia syndrome (POTS).
Postural orthostatic tachycardia syndrome (POTS), a disorder characterized by sudden fainting, may be an autoimmune disease. A new study reveals 89% of patients with the condition had elevated levels of autoantibodies against the adrenergic alpha 1 receptor. The potential biomarker can be identified via blood samples.