[ELECTROCARDIOGRAPHIC EXAMINATION OF YOUNGER SCHOOL-AGE CHILDREN DURING PHYSICAL EXERTION].
D002648:Child; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D005082:Physical Exertion; D012572:School Health Services
CHILD; ELECTROCARDIOGRAPHY; EXERCISE TEST; SCHOOL HEALTH
ELEKTROKARDIOGRAFICHESKOE ISSLEDOVANIE ZDOROVYKH DETE I MLADSHEGO SHKOL'NOGO VOZRASTA VO VREMIA FIZICHESKO I NAGRUZKI.