title: [Dynamics of left-ventricular contraction in children engaged in sports].
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006334:Heart Function Tests; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D010806:Physical Education and Training; D013178:Sports Medicine; D013550:Swimming; D014142:Track and Field; D016276:Ventricular Function
vernacular_title: Dynamika skurczu lewej komory serca dzieci uprawiajqcych sport.