title: Orthostatic tolerance and exercise response before and after 7 days simulated weightlessness.
mesh_terms: D000293:Adolescent; D001510:Bed Rest; D002320:Cardiovascular Physiological Phenomena; D006801:Humans; D007223:Infant; D008297:Male; D005082:Physical Exertion; D011187:Posture; D014893:Weightlessness