Aleksy P, Grot M, Nigowski M, Sobecko E, Grajek M, Krupa-Kotara K. Effect of physical activity on body weight of elementary school children. Qual Sport [Internet]. 2023 Jun. 3 [cited 2025 Apr. 16];14:37-56. Available from: https://apcz.umk.pl/QS/article/view/43883