title: Weight-lifters' blackout.
mesh_terms: D000328:Adult; D001794:Blood Pressure; D002245:Carbon Dioxide / Q000032:analysis; D002302:Cardiac Output; D002560:Cerebrovascular Circulation; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D002546:Ischemic Attack, Transient / Q000150:complications / Q000209:etiology; D008297:Male; D005082:Physical Exertion; D011651:Pulmonary Artery / Q000503:physiopathology; D012119:Respiration; D013178:Sports Medicine; D013312:Stress, Physiological / Q000150:complications* / Q000503:physiopathology; D013575:Syncope / Q000209:etiology*; D014474:Unconsciousness / Q000209:etiology*; D014636:Valsalva Maneuver
chemical_list: D002245:Carbon Dioxide