title: [Electrocardiographic changes in children in the 3rd year of life under the effect of different physical exercise].
mesh_terms: D000367:Age Factors; D002675:Child, Preschool; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D005082:Physical Exertion; D011674:Pulse
vernacular_title: Elektrokardiograficheskie izmeneniia u deteĭ tret'ego goda zhizni pod vliianiem razlichnoĭ fizicheskoĭ nagruzki.