@article{Grigan2025analysis,
author={Grigan, S.A. and Rukavishnikova, S.K.},
title={Analysis of the causes of the decrease in physical fitness levels among students},
journal={Scientific notes of P. F. Lesgaft University},
publisher={National State University of Physical Education, Sports and Health named after P.F. Lesgaft},
year={2025},
pages={44-49},
volume={0},
issue={6},
}