title: [Echocardiographic studies before and during training of peak-performance athletes (cross-country skiers)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002306:Cardiac Volume; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D010701:Phonocardiography; D005082:Physical Exertion; D012865:Skiing; D013178:Sports Medicine
vernacular_title: Echokardiographische Untersuchungen vor und während des Trainings von Hochleistungssportlern (Skilangläufer).