title: [Mental work capacity of first-graders with different degrees of physical preparation having studied in a beginning kindergarten class].
mesh_terms: D002648:Child; D002656:Child Day Care Centers; D002675:Child, Preschool; D006801:Humans; D007858:Learning / Q000502:physiology*; D008606:Mental Processes / Q000502:physiology*; D010806:Physical Education and Training; D005082:Physical Exertion; D012426:Russia
vernacular_title: Umstvennaia rabotosposobnost' pervoklassnikov s raznoĭ fizicheskoĭ podgotovkoĭ, obuchavshikhsia v nulevom klasse detskogo sada.