%A G. P. Griban %A O. Kuzn?etsova %A N. Lyakhova %A V. Prystynskyi %A D. Oleniev %A O. Otravenko %A O. Pantus %J Wiadomo?ci Lekarskie %T Dynamics of students' fitness level while differentiating physical education classes in accordance with their health and nosology of diseases %N 74(3) %D 2021 %P 641-646 %L zu236301