Півень Олександр Борисович (Oleksandr P. and Джим Віктор Юрійович (Viktor D. 2014. Improving the training process of power sports athletes based on their biorhythms. Slobozhanskyi Herald of Science and Sport. 5(43) (Oct. 2014), 65–69. DOI:https://doi.org/10.15391/snsv.2014-5.012.