title: [Study of spontaneous motor activity in young children].
mesh_terms: D000367:Age Factors; D002652:Child Behavior; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009043:Motor Activity
vernacular_title: Izuchenie spontannoĭ dvigatel'noĭ aktivnosti u deteĭ ranneho vozrasta.