title: Changes in cardiac rhythm during sustained high levels of positive (+G Z ) acceleration.
mesh_terms: D000054:Acceleration; D000328:Adult; D000337:Aerospace Medicine; D001145:Arrhythmias, Cardiac / Q000209:etiology; D004562:Electrocardiography; D006112:Gravitation; D006339:Heart Rate; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial