[On the maximum physical stress in some types of work].
D000293:Adolescent; D000328:Adult; D004562:Electrocardiography; D006801:Humans; D009787:Occupational Medicine; D010806:Physical Education and Training; D005082:Physical Exertion
K voprosu o predel'nom fizicheskom napriazhenii pri nekotorykh vidakh truda.