LIU, Yangjun, XIE, Wei & OSSOWSKI, Zbigniew. The effects of Nordic Walking on health in adults: A systematic review. Journal of Education, Health and Sport [online]. 30 November 2022, T. 13, nr 1, s. 188–196. [accessed 1.6.2023]. DOI 10.12775/JEHS.2023.13.01.028.