[Changes in the psychophysical fitness of schoolchildren during a 5-day school week].
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D007858:Learning / Q000502:physiology*; D008297:Male; D011044:Poland; D011597:Psychomotor Performance / Q000502:physiology*; D012737:Sex Factors; D013997:Time Factors; D014938:Work Capacity Evaluation
Badanie zmian sprawności psychofizycznej uczniów przy 5 dniowym tygodniu nauki.