title: [Cardiac activity and status of the sympathoadrenal system in boys engaged in sports].
authors: F G
authors: FG
authors: Sitdikov
authors: Iu S
authors: IuS
authors: Vaniushin
mesh_terms: D000311:Adrenal Glands / Q000502:physiology*; D002648:Child; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D005082:Physical Exertion; D013177:Sports; D013564:Sympathetic Nervous System / Q000502:physiology*
vernacular_title: Serdechnaia deiatel'nost' i sostoianie simpatoadrenalovoĭ sistemy u mal'chikov, zanimaiushchikhsia sportom.