title: Inhibition of external demand pacemakers during muscular activity.
mesh_terms: D000368:Aged; D001132:Arm; D004562:Electrocardiography; D004567:Electrodes, Implanted; D004576:Electromyography; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D009119:Muscle Contraction; D010138:Pacemaker, Artificial; D011187:Posture; D013575:Syncope / Q000209:etiology