Furman, Y. M., Holovkina, V., Salnykova, S., Sulyma, A., Brezdeniuk, O., Korolchuk, A., & Nesterova, S. (2018). Effect of swimming with the use of aqua fitness elements and interval hypoxic training on the physical fitness of boys aged 11-12 years. Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 22(4), 184–188. https://doi.org/10.15561/18189172.2018.0403