SPYCHALSKA, Julita. The influence of physical activity, specialized exercises and diet on pregnancy and delivery according to pregnant women attending a childbirth school. Journal of Education, Health and Sport. Online. 11 December 2021. Vol. 11, no. 12, pp. 89-138. [Accessed 6 February 2026]. DOI 10.12775/JEHS.2021.11.12.008.