title: Uptight when upright.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000959:Antihypertensive Agents / Q000009:adverse effects; D001810:Blood Volume / Q000187:drug effects; D002302:Cardiac Output; D005081:Exercise Therapy; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007024:Hypotension, Orthostatic / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D008297:Male; D008875:Middle Aged; D008996:Monoamine Oxidase Inhibitors / Q000494:pharmacology; D009638:Norepinephrine / Q000378:metabolism; D011187:Posture; D012737:Sex Factors; D013564:Sympathetic Nervous System / Q000503:physiopathology; D013566:Sympathomimetics / Q000627:therapeutic use
chemical_list: D000959:Antihypertensive Agents; D008996:Monoamine Oxidase Inhibitors; D013566:Sympathomimetics; D009638:Norepinephrine